Slashdot Mirror


A Brief History of the Space Station

HyperbolicParabaloid writes "A story about the history of the International Space Station, and its utility or non-utility for space exploration. One interesting insight: after the Challenger explosion it became obvious that we would never refuel a rocket with volatile fuel at a space station because the threat to the station would be so great. And did you know that to accomodate the Russians, the space station is in an orbit that makes it almost useless as a jumping off point to anywhere?"

380 comments

  1. Added insight by JetScootr · · Score: 3, Interesting

    I have worked at NASA since before the first shuttle launch. I will post in my journal some added insight to this after work. Obviously, I can not post from work.
    What I post will be my opinion only, and not that of Nasa or my employer. Look this evening, around 8 pm central time.

    --
    Pavlov wouldn't be so famous if he'd used a can opener instead of a bell.
    1. Re:Added insight by JetScootr · · Score: 1

      If anyone's still interested or gives a rat's *, my promised journal update is up. I didn't post here cuz I knew it would be late, and I knew it would be long. So in case anyone wants it, there it is. Sorry it's late.

      --
      Pavlov wouldn't be so famous if he'd used a can opener instead of a bell.
  2. Full Text (For the NYT tinfoil hat crew) by mu-sly · · Score: 5, Informative

    From Glory to Sideshow: The Space Station's Story
    By WILLIAM J. BROAD

    Published: February 3, 2004

    In 1989, when the first President George Bush announced his plan to send American astronauts back to the Moon and on to Mars, he called the proposed space station "our critical next step in all our space endeavors." It would be a base in the weightlessness of space where big rockets would be assembled and blast off on voyages of exploration: "a new bridge between the worlds."

    Now, with the outpost hurtling through space 240 miles above Earth and with 16 nations struggling to complete the most challenging engineering project of all time, the station has suddenly become a $100 billion dead end.

    The current President Bush made no mention of it as a steppingstone in his speech on Jan. 14 reviving the call for missions to the Moon and Mars. Instead, he spoke of it as a site of biomedical research and an "obligation" that the United States had to help finish.

    Mr. Bush gave no clear indication how, or whether, the United States planned to use the station after its prospective completion in 2010. With NASA focusing its efforts and its budget on the Moon and Mars, the station's prospects are uncertain.

    "I'm worried that they're going to cut off the space shuttle before we have another vehicle that can fly," said Senator Bill Nelson, a Florida Democrat who is the only current member of Congress to have flown in space. "And that will drastically reduce space station use."

    What happened? How did the station go from star to sideshow? Experts cite a litany of factors: cost overruns, design changes, new perceptions of technical risk after the shuttle disasters and shifting national priorities. For instance, orbital changes to accommodate Russia after the cold war made it harder to use the station as a launching pad.

    The tale has no real bad guys, the experts say, but many false promises.

    "It was always a steppingstone to the stars," said Dr. Howard E. McCurdy, a space historian at American University. "It was sold as all things to all people."

    Dr. Alex Roland, a former NASA historian now at Duke University, said a moral of the story was that Congress and the public needed to work harder to hold the space agency accountable for its dreams.

    "They keep getting trapped in their own rhetoric," he said. "They're willing victims of it. But as public policy it's a disaster because it feeds unrealistic expectations."

    At the start of the space age, visionaries invariably saw outposts in earth orbit as jumping-off points. Dr. Wernher von Braun, in a famous 1952 article, told of a huge inhabited wheel. "From this platform," he said, "a trip to the Moon itself will be just a step."

    In 1968, Stanley Kubrick's movie "2001: A Space Odyssey" featured a giant outpost in Earth orbit that was a way station to the Moon and Jupiter.

    Finally, after decades of fantasies, President Ronald Reagan proposed in 1984 that the United States actually build a space station. It too was envisioned as a hub for colonies on the Moon and Mars. For Mr. Reagan, the station also represented a way to challenge the Soviet Union. In the cold war, Moscow made human outposts a hallmark of its space activities.

    But Congress did not vote construction money to pay for either Mr. Reagan's vision or that of the first President Bush. Not until 1993 did a new a new vision for space take shape, this one emphasizing harmony over rivalry. That September, President Bill Clinton announced that Russia had joined the station effort as a full partner. Its giant rockets were seen as a boon for the project and a good backup if the shuttles should again fail catastrophically, as the Challenger did in 1986.

    "One world, one station," said Daniel S. Goldin, NASA's administrator at the time.

    There was just one problem. For the Russian rockets to reach the grand unified station, it would need a different orbit.

    Shuttles flying out of Florida usually go into an or

    1. Re:Full Text (For the NYT tinfoil hat crew) by Anonymous Coward · · Score: 5, Insightful

      Some missing context:

      So the Clinton administration decided to erect the station at 51.6 degrees, hailing it as a "world orbit" accessible to all spacefaring nations.

      Which wasn't a bad way to save the project, when we had no obvious reason (or imaginary cash) to embark outwards.

      The Moon, experts say, has now taken on the role of steppingstone. "Lifting heavy spacecraft and fuel out of the Earth's gravity is expensive," Mr. Bush said in his speech. "Spacecraft assembled and provisioned on the Moon could escape its far lower gravity using far less energy, and thus, far less cost."

      Many experts are skeptical of those claims, saying Mr. Bush overlooked the large energy costs of getting fuel and rockets to the Moon. Previous NASA studies for Mars missions have seldom if ever used the Moon as a launching pad because that would take about twice as much energy as going from the Earth or an Earth outpost.


      ...But now, we have an administration that's 1. desperately in need of new sources of energy and a big public-works project to drive an economic recovery, and 2. not afraid of nuclear rockets. The moon makes a much better staging ground for such devices than an inhabited planet you don't want to pollute, and lower gravity would make launch failures lower-risk (less chance of a nuclear core breaking apart on impact).

      Only trouble is, we need either all the facilities to construct these things on the moon... or to launch them all from Earth, which rather ruins the cost/benefit ratio.

    2. Re:Full Text (For the NYT tinfoil hat crew) by Eccles · · Score: 2, Insightful

      Which wasn't a bad way to save the project, when we had no obvious reason (or imaginary cash) to embark outwards.

      But to save it for what? What are we getting for our $100 billion? It seems like there's a lot of scientific research that could be done for that amount with a lot bigger payoff.

      --
      Ooh, a sarcasm detector. Oh, that's a real useful invention.
    3. Re:Full Text (For the NYT tinfoil hat crew) by RetiredMidn · · Score: 2, Insightful
      Only trouble is, we need either all the facilities to construct these things on the moon... or to launch them all from Earth, which rather ruins the cost/benefit ratio.

      Unless we can synthesize (or extract) fuel and oxygen from the moon, which saves the cost of lifting it out of Earth's gravity well. In addition, there may be circumstances where it would make more sense to lift modular components of a deep-space craft off Earth, rather than trying to lift it all at once. (Like the ISS.)

    4. Re:Full Text (For the NYT tinfoil hat crew) by killyourblender · · Score: 2, Insightful

      IMHO

      I'm completely sick of politics and funding getting in the way of proper science and research. I honestly believe that this is really a ploy to involve the aerospace industry as an election scheme.

      Think about it... GWB is already throwing all kinds of defense contracts at Boeing, Lockheed, and the like... all of whom also make gear and components that launch into orbit. Sending money this way creates jobs. New jobs for GWB's adopted brainchild improves his public opinion. Then the added bonus comes in of the Bush's Administration having primary involvement in the Space Station, as well as other such projects (do the words "Star Wars" ring a bell?).

      Please don't get me wrong... I believe in NASA's purpose and would like to see space exploration become a higher priority. I would like to see more and better studies of planets and heavenly bodies, as well as the effects & potentials for human life outside the atmosphere. I'm a child of the 80's, I know the excitement of watching a launch... even if it was only on TV.

      This is why I'm so %&$@ bitter! Grand-scale goals that affect more than "a few people" are being decided with respect to the fate of less than "a few people"... I hope that makes sense.

      --
      "Would you rather be right, or happy?"
    5. Re:Full Text (For the NYT tinfoil hat crew) by SurfTheWorld · · Score: 2, Insightful

      Why do I have to register if the content is "free"?

      Excuse me while I purge all of this spam....

      No wait, it's not free after all.

      --
      Do it for da shorties
    6. Re:Full Text (For the NYT tinfoil hat crew) by jpop32 · · Score: 1

      Why do I have to register if the content is "free"?

      Maybe because Slashdot provides you with useful links, interesting content and, well, stuff that matters.

      Oh, you meant NYT?

      As a side note, being registered on NYT for a number of years has yet to produce a single spam, at least in my case.

  3. Built by a committee by erick99 · · Score: 5, Insightful
    The space station, which could have been truly great, ended up being something classically accomplished by committee. It is bisected into halves that are almost identical so that the US has it's own half versus the the Russian half. A lot of concessions and compromises have kept the space station from realizing it's potential.

    Happy Trails,

    Erick

    --
    http://www.busyweather.com/
    1. Re:Built by a committee by mwood · · Score: 5, Insightful

      Awww, come on. I dunno what was originally envisioned, but what we got is clearly a pilot project. It's way too small to be a serious refueling stop. I'm sure that all kinds of good science are being done as manpower and air leaks permit, but it's arguable that the most important thing we're learning from it is how to build space habitats.

      (Well, we're also learning that some Russians/Yanks are not so bad after all and that even our governments can get along if they care to try. That's very useful.)

      There are some things that we will have to scale up quite a bit in order to make a space station that's more than a floating lab. For one thing, we need a lot more transport capacity: more tonnage per trip and many more trips per year. It takes a *lot of stuff* to build a big space station, and at, what, 4000kg per trip? it's going to take forever.

      Obviously the *budget* is going to have to increase quite a bit. Sure, the ISS is already expensive, but ask yourself what it would cost to build lower Manhattan from scratch, from the seabed up, and you'll get a feel for the amount of material, work, and money it takes to build something like what you see in _2001: a Space Odyssey_.

      All this scaling suggests something else: *ownership* is going to have to scale up. The ISS is, technically, international since two nations are doing most of it, but what if there were a dozen nations as deeply involved, or a hundred? Of course each nation has its own limits as to what it could reasonably ask itself to contribute to such an effort. (Don't ask me how anyone is going to make the case to governments that are busy figuring out how they're going to pay for enough bullets to settle the score with the tribe next door.)-:

      All of these are doable if enough people care, and there are reasons to care. But it's going to be hideously expensive, it's going to take a long time, and it's going to take a lot of steps and leave a lot of pilot projects and outright failures in its wake. The ISS is doing a lot for us, but it's never gonna be that big wheel in the sky -- it never could have been.

    2. Re:Built by a committee by argStyopa · · Score: 1

      The space station, which could have been truly great, ended up being something classically accomplished by committee ... A lot of concessions and compromises have kept the space station from realizing it's potential.

      Making it a perfect counterpart to the similarly-designed shuttle.

      They both suck.

      Write them both off and spend the money on a space elevator.

      --
      -Styopa
    3. Re:Built by a committee by Anonymous Coward · · Score: 1

      Its not just the Russians who cause this kind of design by committee problem, in fact it may be a lot more our own problem. Before the Russians were included a series of designs were presented and evaluated. One, I believe it was from Boeing, was clearly superior to all the rest. It consisted of a group of modular pieces which connected in a chain, very molecular looking. It would have been easy to build, easy to transport the pieces up and easy to expand as desired. It was nixed however, in favor of a design similar to the current one, and one of the primary reasons was that it would not have been visable with the naked eye from earth! That was in the days when we needed to say to the Russians "mine is bigger than yours!"

    4. Re:Built by a committee by OriginalArlen · · Score: 4, Funny
      In the beginning, the space station was created.

      This has made a lot of people very angry, and has been widely regarded as a Bad Move.

      --

      Everything I needed to know about life, I learnt from Blake's Seven
    5. Re:Built by a committee by drinkypoo · · Score: 3, Interesting

      It's foolish, or in fact downright stupid, to lift all the mass for a space station from earth. We should be thinking of doing construction in space. Maybe towing a large asteroid into orbit, doing assorted sonar tests on it to get an idea of its structure, and digging a hole (or series thereof) in it. Maybe solar smelting using parabolic mirrors, it's not my department. The simple fact is that it costs too much to put mass into orbit, so let's work with mass that's already there.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    6. Re:Built by a committee by selfsealingstembolt · · Score: 3, Informative

      The ISS is, technically, international since two nations are doing most of it, but what if there were a dozen nations as deeply involved, or a hundred?

      Actually, there are 16 Nations participating, so this qualifies for "a dozen", doesnt't it?

      Besides that, you are right. The ISS is just a prototype. Talking about its qualities as research lab was just a way to show the investors (taxpayers) some justification for the expense. It was needed to quiet down all those "we have more pressing problems as to catapult stuff into space"-people.
      Of course science is a goal, but to think those discoveries will earn back the money invested in a way directly measurable, is absurd.

      In the long term there are 2 solutions for mankind:
      1. Find a way to stop population growth and base our whole society on resources available in unlimited amounts. Live in equilibrium with our environment. As our economy does only work if it can grow steady (about 2% are ideal) this would be a fundamental change.
      2. Do what we did for millenea now: Go out there and expand.

      As #1 is not very likely to happen, the question is not whether we can afford to venture into space, but if we can afford not to.
      If we do neither, we(as in humanity) will vanish inevitably.

      The ISS is just a stepping stone, yes, but as training ground for space engineering, not space expeditions.

      --
      Keep open minded - but not that open your brain falls out...
    7. Re:Built by a committee by OwnedByTwoCats · · Score: 1

      Towing a large asteroid into earth orbit would require an awful lot of space infrastructure we simply don't have.

      Gerry O'Neill had it right: mining colonies on the moon, with solar-powered mass-drivers to launch luner materials (raw or processed into metals) into orbit.

    8. Re:Built by a committee by OwnedByTwoCats · · Score: 1

      Actually, solution #1 isn't too far out. I wish I remembered the name of the demographic transition: once a society becomes wealthy enough, birth rates plummet. Europe without immigration would be shrinking in population. USA would be close to zero population growth.

      The trick it to get China, south Asia (India, Pakistan, and Bangladesh), and south-east Asia (Indonesia, Thailand, Phillapenes, Vietnam) wealthy. Without screwing the environmental pooch.

    9. Re:Built by a committee by FictionPimp · · Score: 0

      Why not do what we did when we first came to america. Launch tons of ships designed to become parts with their payload. Let them live up there, and have a small landing pod that drops down to earth like they used back in the 60's. If 90% of the cost is getting the material into orbit, why not create dumbfire ships that are materials for the space station?

    10. Re:Built by a committee by selfsealingstembolt · · Score: 1

      Yes, but getting them wealthy will not work without the "environmental pooch".

      The ecosystem of earth is able to sustain about 4 billion people indefinitely. Right now, we are using 150% of the resources we have. Its like using more of your savings than you get in interest. It will work for a time, but not forever.
      Calculations of the UN show that world population will stagnate somewhere around 14 billion (or was it 9? ) in the second half of this century, so we are way beyond our limits.
      Now we can either reduce our population size or find ways to augment the ecosystem in order to sustain our actual number.
      Only a huge leap in technology and mindset could accomplish that. And space exploration is something that may be able to inspire enough people to make that leap happen.

      To explore and extend our knowledge (and posessions) is the very basic nature of humanity, which we cannot fight, so lets use it to undo the mistakes it caused. The solar system is huge(from our point of view) and very rich in materials and energy, ready to be taken. To use them is the best way to protect earth in the long run and make it a nicer place again.

      --
      Keep open minded - but not that open your brain falls out...
    11. Re:Built by a committee by senahj · · Score: 1

      > I'm sure that all kinds of good science are being done
      > as manpower and air leaks permit

      A common misconception among non-scientists.

      The ISS project has not been useful for significant scientific research.
      Unmanned craft, on the other hand, have.

      See the Senate testimony
      of Robert Park for corroboration.

      --
      Wait a minute. Didn't I say that on the other side of the record? I'd better check ...
    12. Re:Built by a committee by linzeal · · Score: 1

      Well I for one disagree, esp with the succesful landing of the NEAR probe and the demonstrated utility of an ion engine from deep space 1. With those two skills we can land and steer an asteroid with a reasonably small ratio of kg/Ip sec. Just like the TAU mission though, this will require a new level of funding for a single mission.

    13. Re:Built by a committee by cygnus · · Score: 1
      The space station, which could have been truly great, ended up being something classically accomplished by committee.
      how many space stations have been built by just one person? is it even a viable idea? if so, i'd like to be one... a space station maven, i'd like to be called. :)
      --
      Just raise the taxes on crack.
    14. Re:Built by a committee by fenix+down · · Score: 1

      NASA: "So, wait, were we supposed to be using meters for what we type in here, or was that just for the memos?"
      ION ENGINE: "MEEP ERROR"
      FRANCE: "Putain de merde! NASA you bastards! On est foutu! Aieeeee!"

    15. Re:Built by a committee by fenix+down · · Score: 1

      Well, of course not. There are only two people up there. Manpower and air leaks never permit.

    16. Re:Built by a committee by mwood · · Score: 1

      "The ISS project has not been useful for significant scientific research. Unmanned craft, on the other hand, have."

      So, how much have we learned about how to build human habitats in space, and how humans adapt to life in such habitats, by using unmanned craft?

      Robots have done a lot of really interesting geology and atmospheric science which would be rather pointless if attempted from a manned craft in earth orbit. Robots haven't really done anything I can think of to advance our understanding of ourselves. You don't use a particle accelerator to study economics or astronomy; there are other kinds of lab.s for those fields. Whether a given kind of lab. is useful to science depends on what you want to study.

    17. Re:Built by a committee by gangien · · Score: 1

      As #1 is not very likely to happen, the question is not whether we can afford to venture into space, but if we can afford not to.

      Nature will take care of this, eventually..

    18. Re:Built by a committee by phriedom · · Score: 1

      "As #1 is not very likely to happen, the question is not whether we can afford to venture into space, but if we can afford not to. If we do neither, we(as in humanity) will vanish inevitably."

      If one accepts the proposition that humanity will use up the non-renewable resources and not make a technological leap that expands the sustainable capacity of the Earth; I still don't see how that inevitably leads to extinction. It seems to me that the worst that will happen is that humanity will die back to sustainable population levels. Perhaps that is half of the current population, but that is a long way from vanishing.

      I'm in favor of exploration, but I find hyperbolic arguments for it to be counter-productive.

      --
      Don't moderate flamebait as Troll. Know the difference or you will be Meta-moderated.
    19. Re:Built by a committee by Anonymous Coward · · Score: 0

      Nice statistics. I wonder where they came from...

    20. Re:Built by a committee by Anonymous Coward · · Score: 0

      I'm curious as to where you got the 4 billion number. I haven't seen anything like that mentioned before, so I'd like to do some reading if you can point me towards a source.

    21. Re:Built by a committee by Anonymous Coward · · Score: 0

      south Asia (India, Pakistan, and Bangladesh) are you sure you want to include Pak and BD in same league as India ... or you will have Pak screwing world for years and the their Top Scientist say I am sorry for stealing and sharing with bad guys and then world (US, etc) will give them a clean-chit to cover their misjudgements!

    22. Re:Built by a committee by drinkypoo · · Score: 1

      If we keep using the space shuttle, we should deliver the main tank to the ISS instead of discarding it and letting it burn up. If nothing else you could put it in the debris path of the ISS and block rocks with it.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    23. Re:Built by a committee by Anonymous Coward · · Score: 0

      Oops, the asteriod slips and crashes into China!! :(

    24. Re:Built by a committee by DunbarTheInept · · Score: 2, Interesting


      For one thing, we need a lot more transport capacity: more tonnage per trip

      We already *have* a lot of tonnage in the Shuttle design. It's got a hefty payload. The problem is that the expense of that thing is usually not worth it. The Shuttle is rarely used to it's full cargo capacity, and that means it's always a waste of money to use. What we need is something who's cost to operate scales with the size of the payload - so small things are cheap to launch, and it doesn't get expensive until you launch something big.

      --

      Don't label something "offtopic" unless you know the topic well enough to tell what's on topic.

    25. Re:Built by a committee by BillyBlaze · · Score: 1

      Well, one argument is that there are could be a catastrophe. ("The dinosaurs died because they didn't have a space program.") But another argument is, what's the point of a species' existance, if not to grow? ("Go west, young man!")

    26. Re:Built by a committee by mwood · · Score: 1

      "We already *have* a lot of tonnage in the Shuttle design. It's got a hefty payload."

      So, how many Shuttle flights would it take to haul the materials to build a habitat with one million cubic feet of habitable space. One? two?...a thousand? Because 1e6 cu. ft. is *dinky* compared to what you'd need for a serious, permanent orbital environment and way station. We'll have a dozen, all larger than that.

      How many Shuttle flights has it taken to build the tiny portion of the ISS that's been assembled so far? How many more to complete it (assuming we don't get a better idea long before it is completed)?

      On your other point: a city bus is rarely filled to capacity either, so is it a waste of money to run the buses? No, not compared to the amount of money you'd spend making fifty different sizes of public vehicle. Think about the cost of making fifty different sizes of *launch* vehicle. The only thing I can think of that addresses this problem w.r.t. transport to orbit is the orbital tower, and since that depends on the use of materials for which there is as yet not even a theoretical basis for their creation, there's no way of knowing how much *that*'s gonna cost.

      Or you can look at it on a different scale and say that the cost of the STS scales very nicely with the size of the payload. It costs pretty much exactly a billion times as much to ship ten billion tons to orbit via shuttle as it does to ship ten tons, since you'll be making a billion trips. "Ten billion tons" is not wildly out of scale w.r.t. the amount of material needed to build a useful amount of permanent orbital habitat with its infrastructure. (Looking at the size of the project in this way will explain why people want to set up mines and mass-drivers on the moon: it doesn't scale so well but the operating cost should be much lower.)

      Finally, it costs a lot to run a railroad train from coast to coast, so they put more than one item of freight on each train. Is there some way we can do a better job of filling each Shuttle flight to capacity, without making missions impossibly complex? (Unfortunately there is, as yet, very little worth bringing *back*, so every return leg is wasted except from the point of view of the passengers and crew. :-) Isn't there some sort of "small missions bus" that can carry four or five or twenty-five little jobs, eject them appropriately, and then either be thrown away or return to the mothership for reuse?

    27. Re:Built by a committee by flewp · · Score: 1

      Uhm, it's not quite as simple as landing a spacecraft on an asteroid, turning on the ion engine and having it come our way. Keep in mind that asteroid probably has quite a bit of speed already, and that could be a problem if it's not headed in the right direction. It's also probably spinning somehow, and that would have to be overcome.

      I'm not saying it isn't possible, I'm just saying you're simplifying it quite a bit.

      --
      WWJD.... for a Klondike bar?
  4. Space Station by essreenim · · Score: 5, Funny

    Hmm, it's in near earth orbit to accomodate the Russians.

    I thought they needed extra fans to accomodate the wind passed by the Russian cosmonots after eating all that dodgy Pizza hut grub.

    1. Re:Space Station by ehack · · Score: 0

      If the russians are so smart, why not let them do it alone ?
      And, if Nasa is so smart, why haven't they got a flying shuttle ? is that the russian's fault too ?

      --
      This is not a signature.
    2. Re:Space Station by Anonymous Coward · · Score: 0

      "As for NASA's progressively more and more conservative attitude; that spells the death knell for actually doing anything."

      It's their lack of conservatism that blows up shuttles. Manned space flight requires making safety the first priority. That's just the nature of it. Under political and financial pressure, NASA systematically puts its own objectives ahead of safety. That's not a lack of conservatism. It's not bolding going where no man has gone before. It's manslaughter. But it's what happens when you put bean counters in charge of an ambitious science and engineering program.

    3. Re:Space Station by OldAndSlow · · Score: 4, Interesting
      As for the decision to work with the Russians on ISS; if we hadn't done that there wouldn't BE a space station. We'd still be on the ground. Notice how the Russians currently supply: the ...

      And the US paid them to do all of that. One of the reasons for Russian participation in ISS was to give their rocket scientists something to do besides sell themselves to nations that might be trying to build ICBMs (such as N Korea). It would have been cheaper and faster to build the Russian contributions ourselves.

      The trouble with ISS is that it has no real mission. If we really needed an experimental platform in LEO, why did we let Skylab fall? Turns out using unmanned vehicles lets you do safer and cheaper research on anything except the effect of space flight on humans. But NASA keeps marketing manned flight because they know that it sells well enough to keep their budget flowing. They push manned flight even when it kills real science.

      I was working on the Earth Observing System (EOS) (also known as Mission to Planet Earth) when the ISS was given the go-ahead. ISS ate the EOS budget. It went from $15 billion, to 11, to 7, to (ISTR) 4 before I left. So we don't have the really good data that EOS would have given us on issues like global warming. Instead we have a missionless kludge that resulted from 4 (I think) down-designs.

      NASA used to have visionaries and great engineers. Most of them left (or lost heart) after the end of Apollo and the end of Skylab. Now they are salesmen and bureaucrats

    4. Re:Space Station by Anonymous Coward · · Score: 0

      Just to add on to this, the Russian involvement is also a program by the U.S. to keep a handle on nuclear material. The U.S. 'buys' nuclear materials from Russia, and that money is then used to fund the Russian space program. That's an overly simplified summary of how it works, but I just wanted to point out that it's not like we're just paying Russia to build ISS modules. The administration(s) involved in the deal feel like we (the U.S.) are getting something for that money, and that's control over one of the largest supplies of nuclear material. The obvious thought being, if we buy it from them, then they'll be less likely to sell it to someone else.

    5. Re:Space Station by RayBender · · Score: 4, Insightful
      It's their lack of conservatism that blows up shuttles.

      No, it's the lack of competence that blows up Shuttles. It doesn't matter how conservative you are, if you are too stupid/lazy/ignorant/poor/inexperienced/rushed to properly analyse a problem like a foam impact, you will have bad things happen. Conversely, smart, well-funded and motivated people can pull off some pretty daring things. Take Apollo and lunar orbit rendezvous. That's a very risky approach, where the astronauts can potentially be stranded if it doesn't work. But we did it and it worked...

      The idea that suddenly after Challenger it was too dangerous to refuel in LEO is idiotic. Either it was too dangerous to begin with, or it wasn't. What actually happened was that the perceived risk threshold changed, and suddenly it was no longer considered acceptable to do. In other words, we lost our cojones as an agency.

      Under political and financial pressure, NASA systematically puts its own objectives ahead of safety.

      That's not only insulting, it shows you don't understand the situation. There is a tradeoff between safety and goals; to put safety ahead of everything means you just don't fly. After all, sitting on the launch pad is safer than actually lighting the damned thing. I might have agreed with the statement that "under pressure, NASA took risks that were too big", but I don't even really agree with that. NASA didn't knowingly say "There is a 1:10 chance that the foam will cause a disaster. Do we feel lucky?". Mission managers just missed entirely the danger. That's incompetence and/or bad luck, not recklessness.

      --
      Human genome = 3 billion base pairs = 6 GBit. Windows + Office = 20 Gbit. Which is more impressive?
    6. Re:Space Station by RayBender · · Score: 4, Interesting
      And the US paid them to do all of that.

      Not quite - we paid for one of their modules, the other they paid for. Of course, with their economy being a shambles they had trouble getting the money on time, so there were delays. But remember, we had delays too, and money was no excuse. Boeing did some pretty wacky shit, including inadvertently throwing away a $50 million O2 tank that they had to go rooting through a garbage dump for...

      It would have been cheaper and faster to build the Russian contributions ourselves.

      That is simply not true. 1) we had no design heritage or operational experience with station hardware that had actually flown (Skylab was a one-shot deal so there was no regenerative life support, for instance). They had 30 years of it. 2) Experience with the hardware we actually did build shows that it would have been ridiculously expensive, and likely late. The U.S. Node 1 cost $700 million and was late; and it doesn't actually contain anything. The Russian service module is a self-contained space station, and it cost $200 million.

      The trouble with ISS is that it has no real mission. If we really needed an experimental platform in LEO, why did we let Skylab fall?

      Its mission is that it's necessary for a sustained human presence in space - both for research and as an assembly point/stepping stone for further missions. If you reject the idea of human space flight, then yes, it doesn't have a mission. Skylab fell for the reason I've been lamenting: Congress and the people just never really cared enough to actually fund space at the required level.

      They push manned flight even when it kills real science.

      What do you mean by "real" science? The kind of science you happen to do, right? Look, ISS shouldn't take all the blame for the death of MTPE. Congress could and should have funded both at a reasonable level... Besides, in case you havene't noticed, the current Prez has gutted MTPE /EOS/SEC as well as the Station. I doubt he likes research into global warming...

      --
      Human genome = 3 billion base pairs = 6 GBit. Windows + Office = 20 Gbit. Which is more impressive?
    7. Re:Space Station by OldAndSlow · · Score: 2, Interesting
      Its mission is that it's necessary for a sustained human presence in space - both for research and as an assembly point/stepping stone for further missions.
      This is only valid if there are going to be further missions. NASA has not sold that idea to the taxpayers; they haven't even made an attempt. And before anyone brings up the current Prez's "lets go to Mars," consider that the real effect of this initiative will be to kill manned flight:
      1)kill shuttle by 2010
      2)abandon ISS, Hubble, etc. by 2010
      3)go to Mars in 2014, but only if you get the funding. I must be cynical, but I don't think 3 will happen.

      What do you mean by "real" science? The kind of science you happen to do, right?,
      I do software, not science. But we have had humans in LEO for 40 years. We have even done some long-duration stays on orbit. There shouldn't be a whole lot left to learn. Staying in LEO for the sake of staying in LEO isn't science, but it is expensive and dangerous (we've lost 40% of the operational shuttles).

      I'd sign up for an effort to terraform Mars, but not to go to Mars just to say we've been there. I'd sign up for putting massive observatories on the far side of the moon, but not for a moon base for the sake of a moon base.

      Congress could and should have funded both at a reasonable level...
      Congress answers to many masters. Did you know that because of the way appropriation bills are organized, NASA budgets are grouped with the Veterans Administration and a couple other agencies. Early in every budget cycle, appropriation bills are given a not-to-exceed cost. So adding to NASA means, in effect, taking away from Veterans. The reality is that any increase for manned space flight means a decrease for everything else in NASA.

      The bottom line is that if you want to have manned space exploration, you have to sell it to the voters. And they haven't been buying. Not for the last 30 years.

    8. Re:Space Station by sahonen · · Score: 1

      Heck, transferring fuel on the GROUND is dangerous. I suppose we shouldn't drive our cars, it's too dangerous!

      --
      Make me a friend and I'll mod you up
    9. Re:Space Station by Axoiv · · Score: 1

      > The Russian service module is a self-contained space station, and it cost $200 million.

      You mean like a space station in the space station. Wow, cool...
      That's what I call that redundancy. :-)

    10. Re:Space Station by demachina · · Score: 1
      The idea that suddenly after Challenger it was too dangerous to refuel in LEO is idiotic.

      I think the key point is not that its dangerous to refuel in LEO. Its dangerous to store large quantities of volatile fuel and move it around near a very expensive space station full of people for no obvious reason other than to justify a space station. If you need a refueling station in LEO put a big tank of fuel in orbit, fly the space ship that needs it up to it and transfer it under the control of the ship. What exactly ithe space station adds to the equation that justifies the risk is a mystery.

      I also see absolutely no case to "assemble" stuff in space, like you are going to build the Mars space ship in space or on the moon. It is so absurd. It is really hard to build space hardware on the earth with relatively cheap labor, and lots of tools and parts and 1 G. Costs would explode trying to build stuff in zero or low G with extraordinarily expensive astronaut labor and horrible logistics.

      The only plus to space assembly is you can build more fragile structures since they don't have to survive launch stresses from earth. This benefit is dwarfed by all the down sides.

      In-space assembly should be confined to docking together big modules and thats about it.

      If you could mine propellent cheaply on the moon or an asteroid that would be one worthwhile in-space activity since you need a lot of mass and maybe you could learn to process it in space. It would probably still be better to just get launch costs way down and launch throw-weight way up which makes EVERYTHING easier in space.

      "under pressure, NASA took risks that were too big", but I don't even really agree with that

      The two key points about NASA doing stupid things under pressure, both happen to stem from Republican presidents, and are case studies in letting politics and bureaucracy take precedence over sound decision making and engineering:

      A. They launched Challenger on one of the coldest mornings ever at Kennedy. There was ice everywhere and it was just patently unsound decision making to not wait until it was warmer. In particular the low temperatures made the SRB seals brittle which is why they failed. Even without that all the ice and frozen machinery on the launch pad was out of the norm and dangerous. All Indications are they pressed ahead because of major pressure from the White House since Ronald Reagan wanted some tasty sound bites in his state of the union speech about the teacher in space that night and they had already slipped the launch to many times.

      B. When the foam struck Columbia, rather than making a sound engineering analysis of the risk, all of the managers were instead watching a little screen saver on their PC's counting down to when they had to launch a key component to finish the ISS. George Bush, though his bean counter administrator, had placed the Shuttle program on a rigid schedule to complete the ISS which is what really lead to the disaster. They stopped doing sound engineering and started cutting corners to keep all the launches on schedule. On Columbia they cut one to many corners on the foam impact.

      --
      @de_machina
    11. Re:Space Station by alvint · · Score: 1

      no, the space station is in near earth orbit to accomodate americans. the space shuttle is only capable of carrying cargo to low earth orbit. this low orbit is a much greater hinderence to using the station as a stepping stone to interplanetary travel than it's inclination.

      why do we americans always have to feel that we are superior to everyone else in every respect? the fact is, the russian space program is and always has been at least a decade ahead of ours. i always thought it was ironic that when 'mir' was in orbit, we americans with one side of our mouths would call it a junk heap, yet with the other side of our mouths beg the russians to allow our astronaughts to stay on board. our best attempt at a space station, 'skylab', was a fraction of the size and fell on australia.

    12. Re:Space Station by alvint · · Score: 2, Insightful
      After all, sitting on the launch pad is safer than actually lighting the damned thing.

      tell that to gus, ed, and roger.

  5. Jump off - go nowhere fast. by gus+goose · · Score: 4, Funny

    Jumping off the space station will not take you very far very fast. You will pretty much just stay in orbit with the ISS. By definition, it is in orbit. If per chance you DID jump off, in the direction of earth, then it would probably take about a year or so for your orbit to decay enough to re-enter earth's atmosphere.

    gus

    --
    .. if only.
    1. Re:Jump off - go nowhere fast. by lone_marauder · · Score: 3, Informative

      An ejection from the ISS's orbit would get you as far from Earth as an ejection of the same energy from lower inclinations. The question is, once you look at the solar orbit you achieve, how much energy got spent on actual orbital change as opposed to inclination change (relative to the ecliptic).

      Even the craziest orbit will offer two opportunities per year for a clean ejection, but that is certainly very restrictive for use as a "stepping stone" to anywhere.

      --
      who are those slashdot people? they swept over like Mongol-Tartars.
    2. Re:Jump off - go nowhere fast. by Anonymous Coward · · Score: 0

      can the orbit not be changed to 28 degrees or wherever is most suitable for the ISS to be used as a spaceport? If possible then what would that entail?

  6. when it comes true by vargul · · Score: 5, Insightful

    do you people recall those many sci-fi movies and books made during the cold war which feature teams coined of american and russian heroes usually working together on a spacecraft or such...?

    obviously, it is not that easy.

    --
    Aure entuluva!
  7. Registation-free link by PatrickThomson · · Score: 4, Informative
    --
    I am one of many. My idea is not unique, nor do I expect my voice alone to sway you. I speak in a chorus of opinion.
  8. I had an erector set once. by Anonymous Coward · · Score: 2, Interesting

    The first thing I built wasn't a scale model of the Effiel tower or a working crane.

    The space station can run longterm experiments in microgravity while we teach ourselves about working *really* high iron.

    In my own life I too look at how things might be perfect all the time. But I don't expect them to be so. And so it is with all endevours. But somehow this one alone should stand out in singular fortuitious perfection?

    Less crack more science.

    1. Re:I had an erector set once. by Rosco+P.+Coltrane · · Score: 1

      The first thing I built wasn't a scale model of the Effiel tower or a working crane.

      With an erector set, I'm not sure I want to know a model of what you built with it...

      --
      "A door is what a dog is perpetually on the wrong side of" - Ogden Nash
    2. Re:I had an erector set once. by Anonymous Coward · · Score: 0

      No, of course not. Just sounding it out would have clued you in: E-ff-i-el. Wrong.

  9. High inclination by amightywind · · Score: 3, Informative
    And did you know that to accomodate the Russians, the space station is in an orbit that makes it almost useless as a jumping off point to anywhere?

    The station is in an inclined orbit of 50 degrees, because Baikonur, the Russians launch site, lies at about that latitude. It takes a lot more energy to launch a shuttle to that inclination than its normal 30 degrees. There are also fewer launch opportunities. One benefit of having the station at a high inclination is for earth observation. It flies over a lot of ground. But it is an expensive way to take pictures isn't it? The station was a bad idea pursued to the bitter end. Credit George W. Bush for changing NASA's focus on it.

    --
    an ill wind that blows no good
    1. Re:High inclination by Anonymous Coward · · Score: 0

      Replacing stupid decision with moronic and unreasonable ambition earns him neither credit nor appraisal.

      Read near the end of the article and see why.

    2. Re:High inclination by ThroatwobblerMangrov · · Score: 5, Insightful

      It would have been a worse idea to keep the Russians out as they provide the cheapest and most reliable transportation system for supplies and the only human transportation system operable right now.
      It was never intended to use the ISS as a starting point for planetary missions.

    3. Re:High inclination by Anonymous Coward · · Score: 1, Interesting
      No, it doesn't take a lot more energy to take the space shuttle to a 50 deg orbit... but it sharply reduces the payload. That is because the space shuttle, being a "1.5-stage" launcher, has an extreme mass ratio.

      Like in: low 30 deg orbit, payload 30 tonnes; low 50 deg (or was that polar?) orbit, 15 tonnes.

      A two stage launcher would take this in its stride. Originally the idea was a two-stage double-decker aeroplane space shuttle, but when the costs started to get out of hand, the first stage was cut, the fuel storage externalized and solid boosters added. And that's where we are now.

      I sometimes feel that it would have been smarter to just add recovery to two-stage boosters of existing, cylindrical design... didn't they once find a Gemini/Titan booster floating off Florida?

      It is also not quite true that the 50 deg orbit somehow limits the lauch window much for going to the Moon or planets. The orbital plane precesses 6 deg per day relative to the Sun, making it do half a turn in 180/6 = 30 days. Yes, that gives a 10 day interval for the moon as mentioned in the article. But don't forget that the window is 'sharp' only for the arrival time... the travel time can be tuned in the range of 2-5 days at the cost of only a few 100 m/s in delta-v. For planetary missions you'll have windows opening at 30 day intervals, lasting at least several revolutions. If you cannot reliably use those, perhaps you have no business being in the interplanetary travel business :-)

      Getting out from a high-inclination orbit also offers one small perk: you'll go around most of the powerful, outer radiation belt.

      The major benefit of the ISS for interplanetary travel is as a concept study for interplanetary habitats, which will be needed when going to Mars or farther. One of these could be placed in Martian orbit (landed on Phobos?). It would be a major advantage to operate Martian rovers and the like from less than a light-second distance, even before landing any humans onto the surface. Another habitat could be placed in a transfer orbit, periodically visiting the Earth-Moon and Martian environments. These habitats would be pre-assembled in orbit with lots of expendibles, ionic engines/propellant and thick radiation shielding against the inevitable heavy primaries from the Sun. Getting on and off them and from the transfer habitat to the Mars orbiting one would be done with smaller, traditional rocket propelled craft, as would landing on the surface.

      It is also not quite true that the Moon would be useless as a base for further expeditions; but the term 'base' should not be taken too literally. It would be a source of propellants, e.g., oxygen to be combined with hydrogen lifted from Earth (i.e. only 11% of the total propellant mass). The stuff could be catapulted off the Moon electromagnetically as O'Neill proposed in the 1970's -- no need to use rockets for that. And actually building, for any purpose other than studying the planet in question, a non-minimalistic 'base' on any planetary surface, as opposed to free space, is a thoroughly Bad Idea. Once you're out of the pit, stay out of the pit!

    4. Re:High inclination by FatAlb3rt · · Score: 1, Funny

      No, it doesn't take a lot more energy to take the space shuttle to a 50 deg orbit... but it sharply reduces the payload. That is because the space shuttle, being a "1.5-stage" launcher, has an extreme mass ratio.

      Huh?! Launching at low inclinations and to the east maximizes how much you take advantage of the Earth's rotation. Your argument didn't account for why there is a smaller payload capability at higher inclinations. It's due to the extra fuel needed to gain the extra speed you don't achieve by flying a lower incl. A heavier vehicle would need that much more prop.

      *whisper* That's why we launch from the east coast, not the west --> we always launch to the east in the same direction as the earth's rotation, east, and it's over an unpopulated area, ie, the Atlantic Ocean.

    5. Re:High inclination by Tarwn · · Score: 3, Insightful

      Ah yes, blame Bush, common argument around here.

      The design for the original US space station underwent 7 redesigns in a period of 9 years. From inception in 1984 to 1993 the planned costs of the space station increased. The initial estimate from NASA was $8 billion. The second revision (1987) was caused by changes mandated by congress. By 1990 the cost estimate had grown to $38 billion (including launches). In 1991 congress mandated another redesign, the new redesign by NASA now has a cost estimate of $30 billion (including launches). Late 1992, due to cost growth of the program the white house (for the first time) orders a redesign.
      In June of 1993 the white house again asked NASA for redesign options that would significantly shrink the cost (by lowering size and capabilities). NASA presented 3 options (named Option A, B, C). At this point a panel concluded that the new plans would cost less, would require management restructuring at NASA, and would benefit from international participation (ie, spread the costs and make people like us).
      The final design of 'American SS Freedom' was still more costly then the Clinton administration was willing to spend. The agreement between the US and Moscow was made in Sept of 1993 between Moscow and NASA negotiators. At this time the US station was a 4-person station design (same design Clinton had just turned down as "too expensive") while the Russian 'Mir-2' was a 6-person design. NASA forced Clinton to decide between the US or Russian design, and thus we have the current conglomerate. The redesign in 1991 called for a price of $30 billion while the newly revised conglomerate would cost $17.4 billion after figuring in contributions from Russia. It's worth noting that 9 years of redesigns cost over $11 billion...
      In 1997 NASA admits, after three years, that it can't build it for $17.4 billion after all. In 1998 the Chabrow report gave NASA a 70-30 chance that the space station would be built for $26 billion and be up to three years late. Due to cost overruns and shortages from Russia, money is requested in 1998 and 1999, bringing the US price tag to $19.4 billion (having already spent about $13.4 I believe). In June of 2000 Congress sets a new spending cap at $26 billion.

      Jan 2001: $17.9 spent to date, and NASA finds out there is a $4 billion cost overrun (oops)
      Feb 2001: George W Bush officially reveals the cost overrun and minor redesign is necessary in order to keep costs to the previously declared levels.

      I have seen figures estimating a cost of $26.1 billion for completion of the space station.

      Perhaps I missed something here, but it seems the biggest changes to the stations capabilities(granted, for the cause of saving money) were committed in 1993, with a few billion dollars of blunder added in which necessitated removing additional features down the road. I find the dates for the $4 billion overrun to be interesting, but I guess that somone could have just wasted that money (about 20-25% of original budget) AFTER Clinton left office but before it was noticed in Jan 2001.

      Anyways, as far as I can see, the only way we could have not had a minor redesign in Feb of 2001 is if either:
      a) Bush decided to spend about $4-$5 extra billion to cover for the current set of cost overruns - and I would love to see what people would have said about that
      b) Bush asks for minor redesign to try and keep project inside the most recent budget - which by this point was already almost impossible unless we consider the $26 billion spending cap from congress as the budget, although many analysts think this will all get spent anyway
      c) At some point during the prior term someone had paid attention to growing costs and the fact that several billion already had to be requested due in part to cost overruns.

      sidenote-
      Very little to do with the post, but how do you accidentally spend $4 billion????
      I mean maybe if your budget was in 100's of billions could I see a slip like that, but when your proposed costs are $19.4 billion (after 98/99 additions) how do you accidentally spend 20% extra? What was this, the NASA/Boeing beer tab for the last decade?

      --
      Whee signature.
    6. Re:High inclination by Tarwn · · Score: 1

      Almost missed something, anyone know where that $100 billion came from in the article? I got all my numbers from NASA and various other documents I found from google (like one of the 1993 reports) as well as some heavily research timelines...if the US price tag really is $100 billion, when did it quadruple, what happened to the congress price cap, and why does this number disagree with every other number I have found?

      --
      Whee signature.
    7. Re:High inclination by C10H14N2 · · Score: 1

      Credit him with going against every single scientific analysis of the feasibility and utility of a Moonbase or manned mission to mars? The man has _ZERO_ authority on the subject and is not responding to the opinions of those who do have the credentials to make informed assessments who are saying exactly the opposite of his wind blowing rhetoric. How is it a bad idea to have a space station to study how humans cope with spaceflight, which is currently the primary M.O. of the project? No matter how many movies you've seen that portray the situation as otherwise, we have very little experience with long-term spaceflight and can barely keep people alive at a distance practically visible with binoculars. The space station as designed is the test bed to figure out how to stay alive in space and is progressing handily toward that end. How would you suggest we get to Mars without the experience we are gaining there? Should we just "wing it?" DUH.

      Christ, people would credit the man for making the Sun rise if there was political hay to be made in it. Oh, I forgot, "it's a vision thing" -- created by the blind.

    8. Re:High inclination by amightywind · · Score: 1
      Ah yes, blame Bush, common argument around here.

      I said, "Credit George W. Bush for changing NASA's focus on it."

      I meant that as a compliment to President Bush.

      --
      an ill wind that blows no good
    9. Re:High inclination by amightywind · · Score: 1
      No, it doesn't take a lot more energy to take the space shuttle to a 50 deg orbit

      Yes, it does. At 50 degrees inclination there is a lesser component of earth's rotation to assist the shuttle in reaching orbital velocity than at 30 deg. That energy has to come from somewhere. As you say, it comes from an emptier shuttle.

      --
      an ill wind that blows no good
    10. Re:High inclination by cpt+kangarooski · · Score: 1

      N.b. that we did build a shuttle launch pad on the west coast.

      --
      -- This and all my posts are in the public domain. I am a lawyer. I am not your lawyer, and this is not legal advice.
    11. Re:High inclination by amightywind · · Score: 1
      How would you suggest we get to Mars without the experience we are gaining there? Should we just "wing it?"

      Experience? That's a good one. The poor spacestation crew are just a couple of marooned campers trying desperately to keep the lights on and the air in. There is no science going on and certainly no exploration. Mr. Bush understands this. He is well advised.

      --
      an ill wind that blows no good
    12. Re:High inclination by OwnedByTwoCats · · Score: 1

      At one point in time, it was Vandenberg Air Force Base. Supposed to be used for putting the shuttle into polar orbits (launching north, IIRC). To service spy satellites.

    13. Re:High inclination by ckaminski · · Score: 1

      The $100 billion dollar number includes things like Shuttle launches, mission control, radio rental/amortization for telemetry and communication and all the other great operating costs. The $26billion amount only covers actual materials cost to build the station.

    14. Re:High inclination by red+floyd · · Score: 1

      It would make more sense for Vandenberg launches to launch south. They'd go out over the Pacific. Going north puts you over SF, Seattle, and western Canada.

      --
      The only reason we have the rights we have is that people just like us died to gain those rights. -- Cheerio Boy
    15. Re:High inclination by C10H14N2 · · Score: 2, Informative
      Ok, let's take GW's plan at face value. We're going to the moon and mars, yay! Fine. The simple fact that the crew is on the station for extended periods of time is providing the necessary science for prolonged spaceflight. There currently is no alternative location for that to occur.

      To put it midly, your statement about "no science' indicates you are misinformed (I'd prefer a different word, but I'm feeling polite today). Perhaps you'd like to check the following link. You may find that the "science' they supposedly are not doing has a direct relation to the pipe dreams of [y]our glorious leader.

      http://www1.msfc.nasa.gov/NEWSROOM/news/releases/2 004/04-012.html

    16. Re:High inclination by Anonymous Coward · · Score: 0

      can the orbit not be changed to 28 degrees or wherever is most suitable for the ISS to be used as a spaceport? If possible then what would that entail?

      Also, are you aware of the K1 reusable 2-stage launcher? Both stages return to near the launch site employing airbags & parachutes with just the payload in space. Each 2-stage rocket is designed to be used 100 times. NASA is looking into using these for Space Station resupply.

    17. Re:High inclination by Anonymous Coward · · Score: 1, Informative
      What you're missing is the argument that I tried to present that the extreme net mass ratio of the Space Shuttle makes even small differences in required energy translate into huge changes in the payload size that can be lifted to orbit.


      Of course I know it's about the Earth's rotation helping out... teach me something new. Still, that's only some 400 m/s, on a total orbital velocity of 8000 m/s, 5%. The effect on the payload is much more than that: it's percentually 1 - exp(-delta-v/v_exh), where delta-v is this 400 m/s and v_exh the exhaust velocity of the rocket engine (roughly). The problem is that this goes off the total mass after burnout, including shuttle structure and external tank. The net payload is a depressingly small fraction of this. That's what I was trying to point out.

    18. Re:High inclination by Anonymous Coward · · Score: 0

      Just 5% in velocity terms -- 10% in energy terms. That's not 'a lot', considering it cuts the payload in half. The figure for an ideal case LH2/LOX launcher would be a 10% payload reduction, roughly.

    19. Re:High inclination by vladkrupin · · Score: 2, Interesting

      If I had a mod point, I'd give you another one.

      When you plan something big, you plan a big contigency plan, even if it's expensive. $400M Mars rovers have many contigency plans, most satellites at least have insurance, etc. One of the best contigency plans for a milti-billion $$$ space station would be to make sure that there is more than one nation that can fly to it. Now think of Shuttles... Even when they DID fly, they were worthless for boosting the altitude and doing correction maneuvers; the progress ships were the only ones capable of that...

      If you don't like the 50 deg. inclination orbit that is designed to fit the Russians better, fine! You'd be left with a dead station in a better orbit now (as opposed to a live, though not doing anything useful, station in an orbit you don't like as much). Take a pick.

      I am still figuring out what that whole 'jumping off' thing is all about. WHere did we want to jump again?

      --

      Jobs? Which jobs?
    20. Re:High inclination by Anonymous Coward · · Score: 0
      Yes, orbit change is always possible but horribly expensive in rocket fuel. Using ionic engines to do it slowly might be an option.


      No I didn't know about K1. Only that Kistler seems to be in Chapter 11. Interesting idea though.


      BTW have you seen this? Fascinating... I have been also thinking along those lines, flying back a winged first stage to launch base using air breathing engines. Should definitely work.

    21. Re:High inclination by amightywind · · Score: 1
      The simple fact that the crew is on the station for extended periods of time is providing the necessary science for prolonged spaceflight...

      This kind of pablum got the station funded in the first place. Necessary science is not being done, no science is being done. We already know that muscles atrophy in zero G. We already know about space sickness. The expensive and perpetual status quo cannot go on. If you want to vent about Mr. Bush, be my guest. But it hardly constitutes a lucid argument.

      --
      an ill wind that blows no good
    22. Re:High inclination by Anonymous Coward · · Score: 0

      It would have been a worse idea to keep the Russians out as they provide the cheapest and most reliable transportation system...

      More offshore outsourcing to save labor costs? Arrrrrrg!

    23. Re:High inclination by Tarwn · · Score: 1

      My apologies, I believe I read that after a negative comment made earlier by someone else so I guess that colored what I was reading in your post a well. Sorry again,
      -T

      --
      Whee signature.
    24. Re:High inclination by CityZen · · Score: 1

      It would be easiest to launch from the equator, right?
      Obviously, I'm not the first person to have thought of this.
      In fact, there's a company set up to do this:
      http://www.sea-launch.com

    25. Re:High inclination by amabbi · · Score: 1
      Now think of Shuttles... Even when they DID fly, they were worthless for boosting the altitude and doing correction maneuvers; the progress ships were the only ones capable of that...

      now that's just blatantly wrong... although the progress supply ships are capable of boosting the ISS orbit, shuttles always did that when they visited...

    26. Re:High inclination by joebok · · Score: 0, Flamebait

      Would these be the same advisors that told him about the WMD in Iraq?

    27. Re:High inclination by C10H14N2 · · Score: 1
      Obviously you cannot read. Obviously you can't even be bothered to type "www.nasa.gov" in your browser. Perhaps this is out of disdain for NASA. If so, perhaps you might look at what Energia thinks is going on up there:

      http://www.energia.ru/english/energia/iss/research es/medic.shtml

      If you still think the astronauts are simply up there performing a multi-billion dollar "mile-high club," go ahead. If and when anyone reaches Mars and you happen to be alive, I'm sure you will base you assessments of their work on the political party represented in the White House instead of on the facts. Bah.

    28. Re:High inclination by amightywind · · Score: 1

      I am a huge fan of NASA and my opinions on space research are non-political. I think NASA's unmanned missions are of tremendous scientific and technical benefit to all. It makes the lavish funding of life sciences research all the more baffling. For too long the practitioners of this "science" have dotted their i's and crossed their t's when it comes to proposing, documenting, and publishing their research. They watched the cash roll in, while other worthy space endeavors went begging. I am also sure that the astronauts are working like busy little bees. What I am saying is that for the meager benefit we all get from it, life sciences space research is vastly overfunded.

      --
      an ill wind that blows no good
    29. Re:High inclination by C10H14N2 · · Score: 1
      "Necessary science is not being done, no science is being done."--amightywind

      "I am also sure that the astronauts are working like busy little bees."--amightywind, after being given a list of what the astronauts are actually doing.

      Alotofwind, apparently. One word: WAFFLE.

      "Siiiiigh"--Al Gore

    30. Re:High inclination by Anonymous Coward · · Score: 0
      It would have been a worse idea to keep the Russians out as they provide the cheapest and most reliable transportation system for supplies and the only human transportation system operable right now.

      Yup. There are a couple of interesting things about the Soyuz. The same basic design is used for their manned and unmanned vehicles, so there is standardization among the vehicles, something the shuttle never had. And the Soyuz launch success record - including the unmanned vehicles - is actually better than STS.
    31. Re:High inclination by amightywind · · Score: 1

      The core of my argument remains in tact. ISS life sciences research does not justify its monster budget. That is not waffling, that is a direct assertion that you do not seem to be able to refute. Hurl all of the insults you want. I will look elsewhere for an intelligent debate.

      --
      an ill wind that blows no good
    32. Re:High inclination by Anonymous Coward · · Score: 0

      And did you know that to accomodate the Russians, the space station is in an orbit that makes it almost useless as a jumping off point to anywhere?

      Err.. when all the US shuttles got grounded after certain incidents, who actually supplied the ISS?

      And I doubt the ISS would have ever been viable as a jumping off point. Maybe next station...

  10. Jumping off points by vpscolo · · Score: 3, Insightful

    Why doesn't NASA just go one step further and establish something on the moon. Surely that would be an even better jumping off point.

    Rus

    1. Re:Jumping off points by tsunamifirestorm · · Score: 1

      Well it does says that in the article that it will take more fuel overall to launch from the moon, there is a possible use for launching from the moon. By landing and refueling on the Moon, a spacecraft could have less space allocated for fuel, which could result in either a larger amount of room, or a faster, smaller ship. This would require the previous launch of fuel ships to the Moon, which would raise the cost. This is probably justifiable if allows quicker trips to Mars or room for more goodies.

    2. Re:Jumping off points by Anonymous Coward · · Score: 0

      rtfa?

    3. Re:Jumping off points by krymsin01 · · Score: 1

      It will take LESS fuel, not more fuel, to launch from the moon due to the lower escape velocity (no atmospheric friction, decreased gravity).

      --
      stuff
    4. Re:Jumping off points by Sepodati · · Score: 1

      What's to stop us from establishing refueling points at various points all the way to mars? Launch unmanned ships and have them staged and ready for refueling the main, manned ship.

      Wouldn't that result in a smaller, faster ship (or more room) overall? Or would the slowing down, stopping, refueling, speeding up cycle just make things worse?

      ---John Holmes...

    5. Re:Jumping off points by Bigman · · Score: 1

      Perhaps it's because they're afraid of the Moon Worms or something?

      --
      *--BigMan--- Time flies like an arrow.. but personally I prefer a nice glass of wine!
    6. Re:Jumping off points by puppet10 · · Score: 4, Interesting

      MORE unless you somehow make the fuel on the moon, since otherwise you're paying the cost of lifting fuel off of earth and then using more to lift off of the moon later.

      No if you can setup an industrial base on the moon which can use the raw materials available to generate fuel and other supplies then a moon launch would be better, but getting a fully functioning fairly substantial base setup is a major proposition when we can't even do an orbiting station properly.

      --
      -------- This space intentionally left blank --------
    7. Re:Jumping off points by Waffle+Iron · · Score: 3, Insightful
      MORE unless you somehow make the fuel on the moon, since otherwise you're paying the cost of lifting fuel off of earth and then using more to lift off of the moon later.

      It's even worse than that because the only way to get supplies to the surface of the moon is to brake out of orbit with retro rockets. So you have use fuel to launch supplies from earth, use more fuel to land on the moon, and then use yet more fuel to launch from the moon.

      If you compare scale diagrams of the puny lunar ascent module to the Saturn V, you get an idea of just how efficient it is to use the moon as a transit depot.

    8. Re:Jumping off points by CuriHP · · Score: 1

      It would take MORE fuel to launch from the moon because you have to get the fuel and other crap to the moon first. ANd since we can currently only make this stuff on earth, you have launch out of higher gravity with atmosperic friction and all the other goodies that go with every earth launch.

      --
      If it's not on fire, it's a software problem.
    9. Re:Jumping off points by Anonymous Coward · · Score: 0

      Why use rockets to launch from the moon at all? Aren't there other ways to propel a spacecraft that would require energy, but not tons of rocket fuel? Catapults, lasers, etc. would be able to get stuff off the moon, right?

    10. Re:Jumping off points by Anonymous Coward · · Score: 0

      Um. Because you can't come to a stop in space without burning a lot of fuel. Inertia, you know.

    11. Re:Jumping off points by Drooling+Iguana · · Score: 1

      Yes, but you'd have to launch off of Earth first, so instead of going directly from Earth to your destination, you'd have to land on the Moon and then launch off of it again, which would require more fuel.

      --
      ... I'm addicted to placebos
    12. Re:Jumping off points by Anonymous Coward · · Score: 0

      Yep, the moon would be an obvious stepping stone from the viewpoint of laypeople like us. Unfortunately it looks like there's probably no water on the moon after all.. so we probably won't be making fuel there.

      However, there are advantages.. lets say we can get *some* materiel up there. Build us a long rail, curved up at the end, with an electric pushcar, charged by solar, and bam, easy launch and recovery for near-earth work.

      Yeah, it's not gonna get you very far from the moon-earth neighborhood, but it's still lots cheaper than paying $1k per kilogram to reach near earth orbit. Mars shots make good news, but in the next 100 years, my money is on near earth operations to generate the most profitable possiblities. Instead of spending $x million to send 3 people up the gravity well, replace one expansion card, or deliver some fuel, we could fire off a one-crew cab for maybe less than a million. Sure, we have to up-ship the guy and the fuel, but if we send say, 50 recharges worth of fuel up earths well, we save ~49X(weight of shuttle minus one fuel recharge)X (cost of rocket fuel).

      That is not a small amount of cash.

      Of course, the problem with planning like this is that when congress decides to reduce it's budget by 1%, it becomes worthless and a money sink instead of a savings-center. Or if we change our plans, it becomes moot but we already paid the contractors so we get a few tons of worthless custom hardware.

      I say, carbon nanotube research (because I'm pro-elevator).

      Disclaimer: I'm not a cosmologist or rocket scientist.

    13. Re:Jumping off points by DunbarTheInept · · Score: 1

      Because you can't just *park* and stay there. Try it and you fall into the sun. It's called an "orbit" for a reason. The "refuelling stations" would shift in their positions such that they wouldn't be lined up in a useful path between Earth and Mars, and it would take more fuel to fly from one to the next than it would take to just go straight to Mars.

      --

      Don't label something "offtopic" unless you know the topic well enough to tell what's on topic.

    14. Re:Jumping off points by fyeles · · Score: 1

      I'm just wodering.... Why does it take the US so long to go to the moon (again??) if it went there using sixties' technology?

      --
      Curiosity killed a cat, but for a while I was a suspect.
    15. Re:Jumping off points by Anonymous Coward · · Score: 0

      In a word, duh....

      Of course you are going to make the fuel on the moon. After all, the resources are there. Why not use them?

  11. Bah, Russians by malus · · Score: 2, Interesting

    I enjoyed reading this piece over on Pravda about how America faked moon landing & how Russia is just The Best!(tm)

    1. Re:Bah, Russians by ceeam · · Score: 1

      Bah, Pravda! Man, you can select your sources ;) It's like - "I've read on that on one american guy's page how all Americans like to ....", it must be true then....

    2. Re:Bah, Russians by JHDillinger · · Score: 0

      July 25....?

    3. Re:Bah, Russians by Anonymous+Bullard · · Score: 2
      Interesting to note how "Pravda" (the infamous Soviet state mouthpiece which actually means "the truth" in russian!) now seems to have replaced every historical reference to Soviet Union with the simple and romantically innocent "Russia". The more evil achievements OTOH, like Russia's continuing occupation of eastern Finland, a result of Josef Stalin's expansionist attack during WWII, still don't see much sunlight in today's "Soviet Russia".

      PS. Also quite, umm, funny was the slogan at the top of Pravda's homepage, saying "Say what you want! PRAVDA.Ru will hear you!" I'm afraid they might be serious about that threat! Is there any independent media left outside the new dear leader Putin's state controls?

      --

      Should invading one's peaceful neighbours be opposed, or rewarded with trade deals?

    4. Re:Bah, Russians by Anonymous Coward · · Score: 0
      From the article:



      Based on surveys, it has been estimated that between 6 and 20 percent of Americans do not believe a man actually walked on the moon. Are 6-20 percent of Americans fools, or are they a little brighter than the rest?



      They're fools.

    5. Re:Bah, Russians by N3WBI3 · · Score: 1, Funny
      This was a crap article, typical tin foil hat garbage. Not only did the Americans not land on the moon, but we also blew up an Atlas rocket in 65 to kill a couple of astronauts who would not 'go along with the program', oh and in 1967 we killed more ment by making sure the door would not open during a fire.

      Now I am probably just missing the sarcasm in your post, if thats the case your right it was funny..

      --
    6. Re:Bah, Russians by Rufus88 · · Score: 1

      The funniest thing about the Pravda article is this quote:

      Yet somehow, these rockets managed to go much, much faster in a zero atmosphere with nothing with which to propel?

      Yes, that's right, rocketry works by pushing against an atmosphere :)

    7. Re:Bah, Russians by Anonymous Coward · · Score: 0

      So by curiosity I click on the link. The Pravda site pops with the article and on the right more articles:

      * Russians conquered Mars 30 years ago.
      * A girl with X-Ray vision. (1)
      * Are dragons for real?

      I closed the window...

      (1) Actually she see a lot more than an X-Ray machine, has performed many miracles, and need money to pay for medical school!!!

  12. Without the Russians it wouldn't BE there by Anonymous Coward · · Score: 5, Insightful

    Well excuse me, but as the Russians are about the only reason we have the ISS in the first place, it seems a little stupid to go complaining about having to accommodate them.

    1. Re:Without the Russians it wouldn't BE there by Anonymous Coward · · Score: 0

      Well excuse me, but as the Russians are about the only reason we have the ISS in the first place, it seems a little stupid to go complaining about having to accommodate them.

      You're missing the point. Given that I'd rather not have the ISS (such as it is), I have every reason to complain.

    2. Re:Without the Russians it wouldn't BE there by kinnell · · Score: 1

      Not to mention that orbiting at 25 degrees just to Accomodate the americans is hardly better. The most efficient way of getting from Earth to orbit is at a 0 degree orbit. But hey, despite all the brilliant scientists, engineers and technical achievements to come out of Russia we should still regard them as backward and incompetent, right?

      --
      If I seem short sighted, it is because I stand on the shoulders of midgets
    3. Re:Without the Russians it wouldn't BE there by mirio · · Score: 1

      Well excuse me, but as the Russians are about the only reason we have the ISS in the first place, it seems a little stupid to go complaining about having to accommodate them.

      Hmm...not quite. Don't forget that the US has funded almost the entire program...even the Russian-built modules when the Russians threatened to abandon the project.

    4. Re:Without the Russians it wouldn't BE there by dillon_rinker · · Score: 1

      we should still regard them as backward and incompetent, right?
      Yup. Read Skunk Works. Note that the original idea for a stealth aircraft came from a young engineer who was reading an article that was written in Russian...

      Their scientists are not incompetent, merely the people who (fail to) provide the scientists with funds.

    5. Re:Without the Russians it wouldn't BE there by ckaminski · · Score: 1

      Actually, it's not. Since the Earth is tilted 23.5 in respect to the sun, a 23.5 degree orbital inclination is better. An inclination equal to the moon orbit's (28.5 deg on the average) is even better for translunar injection.

      http://www.asi.org/adb/04/01/01/02/translunar-or bi ts-notes.html

    6. Re:Without the Russians it wouldn't BE there by Anonymous Coward · · Score: 0

      It just says how expensive it is to buy things in America these days. In (non) Soviet Russia you can buy the same stuff much cheaper...

      To be closer to the topic in hand, the US did pay for Zarya construction. The two other modules (Zvezda and Pirs) were payed for by Russian government. As well as equipment, supplies, Soyuzes, Progresses, Russian communication link...

      It is fair to say that in the space industry the buying power of rouble is substantially bigger than in average. That's one of the reasons why the Russian contribution to the ISS isn't judged directly by money spent - and it is about 30%, instead of 6%, as it would be otherwise.

    7. Re:Without the Russians it wouldn't BE there by Ralph+Wiggam · · Score: 1

      If you build a satellite, you can get insurance that will pay off if it doesn't get into the proper orbit. The insurance will cost significantly more if you launch with a NASA rocket than with a Russian one. The insurance industry ignores national pride and just looks at the numbers.

      France has the right idea in using French Guiana as a launch facility. Putting a rocket on a boat and moving it a few thousand miles on Earth is a lot easier than fighting the laws of physics.

      -B

    8. Re:Without the Russians it wouldn't BE there by zeux · · Score: 1

      France has the right idea in using French Guiana as a launch facility. Putting a rocket on a boat and moving it a few thousand miles on Earth is a lot easier than fighting the laws of physics.
      Actually Ariane is built in Guiana. No need to 'move it a few thousand miles on Earth', only a few thousand meters.

    9. Re:Without the Russians it wouldn't BE there by Moofie · · Score: 1

      I believe the poster was referring to Boeing SeaLaunch which does indeed involve putting a rocket on a boat (well, a mobile oil platform) and moving it a few thousand miles. (OK, several hundred.)

      --
      Why yes, I AM a rocket scientist!
    10. Re:Without the Russians it wouldn't BE there by Anonymous Coward · · Score: 0

      I think they mean accomodate as in 'so they can reach it' and not just politically so that they're not upset.

  13. "Insight" my foot by Rosco+P.+Coltrane · · Score: 4, Informative

    One interesting insight: after the Challenger explosion it became obvious that we would never refuel a rocket with volatile fuel at a space station because the threat to the station would be so great.

    Presumably, refueling tanks would be tacked on the ISS, not kept inside the pressurized sections for storage. Therefore, unless the tank violently busts apart (unlikely, a steady leak is far more probable, even in case of a collision), there's no danger of the fuel leaking out and roasting the space station to oblivion. More likely, there'd be a leak, frozen fuel would be dumped in space, and the tank would empty more or less fast, possibly forcing the controllers to stop the ISS from spinning and/or reorient it. There is no such thing as volatile fuel in an atmosphere-less environment.

    --
    "A door is what a dog is perpetually on the wrong side of" - Ogden Nash
    1. Re:"Insight" my foot by ]ix[ · · Score: 1

      There is no such thing as volatile fuel in an atmosphere-less environment.


      Unless the tank next to it happens to carry the oxidizing agent. In space the fule is never "just hydrogen" or anything similar. The oxygene also has to be carried in to space and be stored on/at the station.

      --

      --
      This is my sig, show me yours
    2. Re:"Insight" my foot by torpor · · Score: 5, Interesting

      There is no such thing as volatile fuel in an atmosphere-less environment.

      Ummm... rubbish. Volatile fuel is its own atmosphere.

      What you mean is, if we keep the two reactive agents which constitute most modern fuel system designs -away- from each other, then we should be able to safely store this material in space.

      Still, I don't see why, with all that wiiiiiide empty space out there, we have to bunch it all together in the same x/y/z ...

      --
      ; -- the corruption of government starts with its secrets. a truly free people keep no secrets. --
    3. Re:"Insight" my foot by Anonymous Coward · · Score: 0

      Still, I don't see why, with all that wiiiiiide empty space out there, we have to bunch it all together in the same x/y/z ...

      Because it would look really neat!

    4. Re:"Insight" my foot by dillon_rinker · · Score: 1

      Yup.

      Have a refueling station in orbit with some reoxidizing stations 10-15 km away. That'd be a short jaunt but quite safe.

    5. Re:"Insight" my foot by Moofie · · Score: 1

      No, it's not, because if that were true, you wouldn't need an oxidizer.

      --
      Why yes, I AM a rocket scientist!
    6. Re:"Insight" my foot by torpor · · Score: 1

      What part of 'volatile' and 'oxidizer' do you not understand?

      --
      ; -- the corruption of government starts with its secrets. a truly free people keep no secrets. --
  14. Re:Those damn Russians by Anonymous Coward · · Score: 0

    Eh. And the russians keep the ISS supplied, while the US has put their manned space flight program on hiatus - once again because they managed to blow up seven people due to criminal neglience.

    Really, get a grip, man.

  15. Had to be said... by pointzero · · Score: 5, Funny

    Russian parts, American parts... ALL MADE IN TAIWAN
    Ok back to work.

    1. Re:Had to be said... by confused+one · · Score: 1

      You forgot: "Here's How we fix things in Russian..." *Takes wrench and hammers it on side of console*

    2. Re:Had to be said... by TR0GD0RtheBURNiNAT0R · · Score: 1
      Just curious, where are will all the Chinese parts be made?

      --
      This is my sig. There are many like it, but this one is mine.
  16. So..what? by Anonymous Coward · · Score: 0

    You need sarcasim tags? A diagram? The ability to beable to browse the internet from the familiar setting of a pop-up book?

  17. WARNING - PARENT FORGOT TO MAKE LNIK by Michael's+Mommy · · Score: 0, Interesting

    So can you mod both him and me up? Thanks. I want to post more - LOTS more.

    Whores.

    nytimes.com/2004/...partner=GOOGLE

    GO NOW!

    Slashdhwores.

  18. Sigh... by jeffkjo1 · · Score: 5, Informative

    And did you know that to accomodate the Russians, the space station is in an orbit that makes it almost useless as a jumping off point to anywhere?

    While this may be true, the ISS was already to be in a horribly useless orbit to begin with, Russians or not.
    Because of a weakness in the shuttle and the immense weight of the station, the station is in a perpetually decaying orbit. That is, to say that the shuttle, each time it docks with the station, has to fire its boosters while docked in order to push it back to a higher orbit. If the shuttle doesn't go back to the statio within the next few years, the ISS will go the way of SkyLab. (The Progress and Soyez ships do not have enough power to push the ISS high enough.)

    Why put the station in such a poor, low orbit? Because the shuttle can't fly that high.
    A recipe for disaster if I ever heard one.

    1. Re:Sigh... by Anonymous Coward · · Score: 0

      I believe it's the radiation hazards that keep ISS on the relatively low (though higher than Mir) orbit. Take the station higher and you'll get more problems with radiation belt to worry about than savings from rare boosting.

  19. Re:Those damn Russians by Ubi_NL · · Score: 1

    "We can't get up there right now because guess who doesn't have their own Shuttle"

    No they just have the Soyuz rockets that take like 90% of all stuff to and from ISS.
    Wasn't it NASA who kept on cancelling flights (Hubble?) because they could not guarantee the safetee of the passengers?

    --

    If an experiment works, something has gone wrong.
  20. Uh, no by 0123456 · · Score: 4, Informative

    "Why put the station in such a poor, low orbit? Because the shuttle can't fly that high."

    It's not in a low orbit because of the shuttle, it's in a low orbit because it's manned and therefore cannot go higher without being either in or beyond the Van Allen belts: in the belts you'll kill the crew real fast, outside the belts you'll kill the crew the next time there's a solar eruption that emits a lot of radiation. No manned station is going to be much higher than ISS without a lot of radiation shielding.

    1. Re:Uh, no by Samuel+Duncan · · Score: 0, Troll

      How they got to moon then, Mr. Clever ?

      --
      Over 90 years and counting !
    2. Re:Uh, no by 0123456 · · Score: 2, Interesting

      They went through the Van Allen belts in a couple of minutes rather than live in them for months, and there were no solar flares during the Apollo flights. Had there been a solar flare, their only chance was to turn the CSM so the fuel tanks of the SM were between them and the sun for some shielding, cross their fingers and kiss their butt goodbye.

    3. Re:Uh, no by edxwelch · · Score: 1

      "outside the belts you'll kill the crew the next time there's a solar eruption that emits a lot of radiation"

      Something that people seem to forget about when they propose sended people to Mars!

    4. Re:Uh, no by Anonymous Coward · · Score: 0

      they didn't.

    5. Re:Uh, no by 0123456 · · Score: 1

      "You have no chance to survive make your time."

      Pretty much, but they wouldn't have given up until they were dead, as a small chance of survival was always better than absolutely none. It was a known risk and NASA picked flight dates to minimise the risk... and got lucky.

    6. Re:Uh, no by GileadGreene · · Score: 5, Informative

      Actually, the parent post is closer to being correct. The Van Allen belts have their lower edge up around 1200-1400 km. The station is orbiting at a much lower altitude than that (mean altitude somewhere around 380 km). That low altitude is mostly driven by the capability of the shuttle, which can't go a whole lot higher than that (especially at the inclination that the station is at). It'd be nice to put the station higher, since that would cut down atmospheric drag a lot, and thereby seriously reduce the amount of stationkeeping (aka "reboosting") they would need to do.

    7. Re:Uh, no by demo9orgon · · Score: 1, Informative

      Link to some information culled from a debunking site RE: Van Allen Belts

      Hopefully this will help clear up the whole radiation issue. Can't say enough cool things about the magnetosphere.

      And as for NASA and whatever we suppose its mission or goals or even what its strategy is...we should probably remember it's a political strap-on. Sure it sees lots of time outside the government's underwear drawer, but regardless of whatever new "Mission" (think of various colored condoms being rolled onto it) NASA is given it's still the same inflexible hard-rubber willie. When talking about its budget we should think in terms of length and circumference. And when we consider how it's being used on/for/by the public, consider the media lubricant...schweet schweet lubricant. I'm still surprised that after so many years the public still feels anything when it comes to NASA.

      --
      Every new form of media has it's own Requirimento
    8. Re:Uh, no by 0123456 · · Score: 1

      "The Van Allen belts have their lower edge up around 1200-1400 km."

      That very much depends on your definition of "edge": it's not as though one meter below you're taking no radiation and one meter above you're dying... the radiation dose increases significantly with altitude, and even at 500km the dose is several times larger than at 400km. You just can't fly much higher than ISS for months at a time without being exposed to a dangerous amount of radation.

    9. Re:Uh, no by GileadGreene · · Score: 1
      You just can't fly much higher than ISS for months at a time without being exposed to a dangerous amount of radation.

      That very much depends on your definition of "dangerous". And on the quantity of shielding that you are willing to put in place.

  21. Thankfully... by C10H14N2 · · Score: 5, Informative

    "And did you know that to accomodate the Russians, the space station is in an orbit that makes it almost useless as a jumping off point to anywhere?"

    I'm sure the astronauts currently living on the station are quite thankful for this as the United States does not have another vehicle and they would all be dead if Russia could not reach them now that the shuttle has been grounded for a year. Should China and/or Japan enter into this endeavor from a launch vehicle point of view, being accessible is hardly a detriment to the utility of the station.

    Clearly, the utility of being able to reach the station from Asia for existing missions far outweighs the utility of using the station as a departure point for missions that have yet to be defined. Besides, the station design is that of a scientific laboratory, not of an orbital drydock. Having already ruled out refueling, can you imagine constructing a transport vehicle in the middle of that tangle of trusses and solar panels? If both construction and refueling are out of the picture, what's left? A snack bar? Seriously, that thing isn't even designed to handle an espresso machine.

    1. Re:Thankfully... by Anonymous Coward · · Score: 0

      Should China and/or Japan enter into this endeavor from a launch vehicle point of view, being accessible is hardly a detriment to the utility of the station.

      China and Japan both extend considerably further south than the Cosmodrome at Kazakhstan.

    2. Re:Thankfully... by C10H14N2 · · Score: 1


      China covers the entire range of 20-50N, covering the entire range from Hawaii (18N) to north of Hokkaido (46N). Baikonur is at 46 degrees, which is less than three degrees north of Shenyang and south of Harbin. Florida is roughly at 25N.

      Look at a map lately?

    3. Re:Thankfully... by alwsn · · Score: 2, Insightful
      I'm sure the astronauts currently living on the station are quite thankful for this as the United States does not have another vehicle and they would all be dead if Russia could not reach them now that the shuttle has been grounded for a year.
      It wasn't as if all of the shuttles blew up at the same time. If for, whatever reason, a crew was stuck in the ISS and the Russians couldn't/wouldn't send something up to get them, NASA would haul ass and send up another shuttle. NASA had only lost 2 shuttles in 100+ launches; of course they would risk another lauch to save a stranded crew. They aren't just going to say "Sorry, enjoy your slow dead, bye."
    4. Re:Thankfully... by mirio · · Score: 1

      I'm sure the astronauts currently living on the station are quite thankful for this as the United States does not have another vehicle and they would all be dead if Russia could not reach them now that the shuttle has been grounded for a year.

      Hmm...

      I think if they were in danger of running out of supplies (and no other alternative was available) NASA would prepare and launch a shuttle with minimum crew to retrieve the ISS occupants. There would be no shortgage of astronauts willing to volunteer for that mission.

    5. Re:Thankfully... by C10H14N2 · · Score: 1

      Having an alternative is hardly a bad idea. Soyuz and Progress are better suited for delivering supplies and providing "life boats" anyway primarily because they are simpler and cheaper.

      It takes 14 months and about $25M to build a Soyuz or Progress and slightly less for launch, but $50M on the far outside from raw materials to orbit. By contrast, Endeavor cost $2.3B, took five years to build, takes 3-5 months to prep for launch, and costs almost a half billion more per launch. That's a total cost by shuttle of $254B, versus $5B by Soyuz for 100 missions. Think of what we could do with the station with that surplus $249 billion...like, maybe, build another one...every ten years.

    6. Re:Thankfully... by ckaminski · · Score: 1

      I have to contend that reliance on the Russians, while not a bad thing in and of itself, has hamstrung our space efforts. Had we not had the Soyuz available as an escape vehicle, GWB wouldn't have been able to kill the X38 Crew Rescue Vehicle, which, BTW, could have been modified to serve as a Crew Transfer Vehicle when bolted to the top of an Atlas or Delta rocket.

      While I was sorry to see the X33 killed, I can't say I blame the Administration. The X38, though?

    7. Re:Thankfully... by C10H14N2 · · Score: 1

      Perhaps you forget that a Soyuz doesn't need to be launched. It's bolted onto the station. It isn't that it would make a better lifeboat. It IS the lifeboat. Did you not get the memo?

    8. Re:Thankfully... by Anonymous Coward · · Score: 0

      I wasn't trying to say that having an alternative is a bad idea, I was just trying to make the point that NASA wouldn't have left people on the station to die if the Soyuz and Progress weren't an option.

    9. Re:Thankfully... by C10H14N2 · · Score: 1

      Had we not had Soyuz, the space station would not have flown. There was no other CRV. Without Soyuz any catastrophic event would have meant the loss of the entire crew. We still don't have a CRV and the X38 was nowhere near ready for production. Besides, if we already have a functioning CRV--and one that is relatively cheap, reliable, easy and quick to build, why reinvent the wheel just because a new idea is sexier? To build an alternate CRV would not exactly be a huge leap of progress if it meant not having the station itself in the first place or delaying its construction until such a vehicle existed.

    10. Re:Thankfully... by Anonymous Coward · · Score: 0

      If russians would not participate what kind of magic will put this lifeboat there?

    11. Re:Thankfully... by Anonymous Coward · · Score: 0

      No, but having a CRV that could carry more than three crew *would* be a huge leap, as it would allow the station to be staffed with its originally-intended complement of scientists. When the station is finished, with all those lab modules installed, those three astronauts will have a hard time keeping up with all the work over their stationkeeping duties.

    12. Re:Thankfully... by C10H14N2 · · Score: 1

      ...three to five months is a long time to wait for a taxi.

    13. Re:Thankfully... by Anonymous Coward · · Score: 1, Informative

      Evidently you did not read my post clearly, since you have just repeated what I said.

      In case you still don't understand, my point is: this orbit is not particularly advantageous for China or Japan, since (like the United States) they both extend considerably further south than the cosmodrome in Kazakhstan.

      Like the US and the USSR, they will prefer to place at least one launch site as close to the equator as is practical.

    14. Re:Thankfully... by Anonymous Coward · · Score: 0

      NASA pays the Russian space programme about 130 million USD / year for the ISS Soyuz lifeboats, of which two are used per year. I guess NASA is getting ripped off then...

    15. Re:Thankfully... by GPS+Pilot · · Score: 1

      the station design is that of a scientific laboratory, not of an orbital drydock. Having already ruled out refueling, can you imagine constructing a transport vehicle in the middle of that tangle of trusses and solar panels?

      The original Reagan-era design for the station included a large hangar for on-orbit assembly of interplanetary spacecraft. Loss of features like that is what we're lamenting. Nobody is saying it would be a good idea to do spacecraft assembly with the current design.

      --
      That that is is that that that that is not is not.
    16. Re:Thankfully... by C10H14N2 · · Score: 1

      sure, if by 'design' you really mean 'watercolor concept.' You might as well lament old episodes of Buck Rogers. And no, there are people on here that are under the impression that the compromise orbit has killed the possibility for 'jumping off' to the moon or mars. There are many reasons why that is irrelevant not the least of which is that by the time those missions would get to production, the current station would be at EOL.

    17. Re:Thankfully... by GPS+Pilot · · Score: 1

      I wouldn't exactly call this a "watercolor concept"... a lot of serious design work went into it before Congress ordered a re-design in an attempt to "cut costs." In fact, Congress ordered five re-designs before we finally arrived at the current design. All those re-designs added tremendously to the cost... if we had just gone ahead and built the original design, we would have spent less money overall, and had a tremendously more capable Station.

      --
      That that is is that that that that is not is not.
    18. Re:Thankfully... by C10H14N2 · · Score: 1

      Nice, erm, watercolor painting.

      No matter how detailed, a "concept" is still a merely conceptual. Compare it to software development where the proofs-of-concept can eat the entire budget before a single piece of product is finished or often even started, where the budget is set before the vast majority of the actual designs are done, let alone development--that is to say the administrators have pulled the numbers out of their collective asses. This amounts to nothing more than specification. Basically, a very complex watercolor painting.

      That said, the current station really is a proof on concept. Look at its precursors: Mir, Skylab, Salyut--all practically tin cans. Sure it strokes the ego (and a few organs) to harken back to the watercolors and plastic models of the 1980's, but compare what is flying now to what has actually flown in the past. The rest is just so much ink on paper and political bravado... in a word: "bullshit."

  22. Don't make me laugh... by WIAKywbfatw · · Score: 5, Insightful

    A lot of concessions and compromises have kept the space station from realizing it's potential.

    Yeah, "concessions and compromises" like, say, allowing redundancy in the type of supply vehicles so that if, say, the shuttle fleet was grounded, Russian Soyuz supply ships would still be able to get supplies and replacement crews to the ISS, as well as getting them back.

    Yeah, I can see how those "concessions and compromises" are a major bummer. Not.

    If you want to blame that shit on someone blame it on the penny-pinching politicians who scaled back the ISS's scope to cut costs.

    --

    "Accept that some days you are the pigeon, and some days you are the statue." - David Brent, Wernham Hogg
    1. Re:Don't make me laugh... by Mad+Alchemist · · Score: 1

      Actually, there are certain "consessions and compromises" that I would've like to have seen in the design. Other posters have pointed out some, but my pet peeve is that I really would've liked to have seen consistent use of metric measurements.

      I worked for a company that worked on some of the life support components of the ISS. All measurements were done in English (American, Imperial, whatever you want to call them) measurements. This means that there are not only redundant components of the ISS, but even redundant toolboxes -- metric and English.

      I spent my three months at this company having flashbacks to the movie "Apollo 13," then bailed to a different company the first chance I got. My time there was enough to give me a lifetime's worth of "stupid engineer" stories. I suspect most aerospace companies have similar practices. This, in my opinion, is the biggest reason aerospace is so expensive.

      Give me private companies (Armadillo Aerospace, Burt Rutan's projects) any day. They're the ones who'll finally get us into space reliably.

  23. Terminal velocity by rcs1000 · · Score: 1, Offtopic

    OK. I have a question, that is sort of related, to this space shuttle issue.

    What is terminal velocity? I mean, what is the concept?

    If I put up a very tall ladder that reached all the way too... ohhh... low earth orbit, and walked up it, then surely I would manage it without ever reaching terminal velocity.

    Help required please!

    --
    --- My dad's political betting
    1. Re:Terminal velocity by oojah · · Score: 2, Interesting

      I think you mean escape velocity.

      Interesting question though :)

      Roger

      --
      Do you have any better hostages?
    2. Re:Terminal velocity by Anonymous Coward · · Score: 0

      Terminal velocity is the limit to how fast you fall.
      You are thinking of escape velocity, which is how fast you need to go to get into orbit. Or how fast you need to go to stay in orbit.
      Theoretically, if you had a ladder that went all the way up to geostationary orbit, then yes, you could climb and then get off. However, if you got off before geostationary altitude you would come back down, and if you got off after, well start waving because we wouldn't see you for much longer.

    3. Re:Terminal velocity by stratjakt · · Score: 5, Informative

      Terminal velocity is the maximum speed you'd reach if you fell off the ladder at the top. Gravity would be pulling you down, air friction would be pushing you up, eventually they balance and you reach a maximum speed. In a vaccuum you'd keep accellerating till you hit the ground.

      You're talking about escape velocity.

      Yes, you would, that's the idea of the space elevator that's brought up from time to time. But you'd be expending energy constantly on your way up.

      Think of it more that you fire a bullet straight up, how fast would it have to be going to leave earths gravitational well? You expend your energy all at once - like the big engine on a rocket. That's escape velocity.

      --
      I don't need no instructions to know how to rock!!!!
    4. Re:Terminal velocity by jpflip · · Score: 2, Informative

      Terminal velocity is the fastest speed at which you can fall. Air resistance prevents you from going any faster under gravity alone, so the exact velocity depends on your shape and size. Yes, you do mean escape velocity. Escape velocity is the speed necessary to completely escape Earth's gravity, NOT just to reach orbit. If you reached escape velocity, you would fly off away from the earth entirely, not end up in orbit. As to the ladder problem, the speed you get is the speed of the ladder being whipped around the earth like a rock on a string. The higher you go, the faster the end of the ladder will whip around. If you ran the ladder all the way up to geosynchronous orbit (the height where an object orbits at the same speed as earth's rotation) you could just hop off and be in that orbit. If you got off lower or higher, you wouldn't be going at the right speed to maintain that orbit and would fall to earth or rise to a higher orbit. Incidentally, another problem is the strength of the ladder. Each separate bit is at a separate height, so each is going too slow or too fast for the orbit at that height and so wants to lead or lag behind the rest of the ladder. The stresses are too much for any ordinary material - that's why people who discuss space elevators talk about using carbon nanotube materials!

    5. Re:Terminal velocity by CrazyTalk · · Score: 1

      Terminal velocity is what you would reach when you fell off said ladder.

    6. Re:Terminal velocity by Anonymous Coward · · Score: 0

      As others have mentioned, the question is about escape velocity, not terminal velocity. I'll add another explanation of escape velocity.

      If I throw a ball straight up, it starts at a certain speed, then slows as it goes up. When it reaches its highest point, the speed is zero. If I throw it harder, it starts at a higher speed, and therefore reaches a higher maximum altitude.

      If I threw the ball really hard, there would be no maximum altitude - it would escape the Earth completely. Escape velocity is the minimum initial speed that I have to give the ball such that it escapes from the Earth.

      Nb: For simplicity of explanation, I have used "speed" and "velocity" loosely.

    7. Re:Terminal velocity by bhima · · Score: 1

      Also the space elevator is moving (as the earth turns) so you also get velocity from that...

      --
      Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity.
    8. Re:Terminal velocity by FireFury03 · · Score: 2, Informative

      Terminal velocity is the maximum velocity you will reach if you start from stationary and are accellerated by gravity through the atmosphere. Obviously it's a function of mass, aerodynamics, atmospheric pressure and strength of gravity.

      On earth we can assume gravity is fairly constant and pressure is dependent on your altitude. If the pressure is zero (because you're in space) then mass and aerodynamics don't count because everything accellerates at the same rate, but in the atmosphere, something with a lot of mass and good aerodynamics (i.e. low drag) will have a higher terminal velocity than something with very little mass and poor aerodynamics (i.e. high drag). Think of the difference between dropping a feather and a rock.

    9. Re:Terminal velocity by Anonymous Coward · · Score: 0

      As has been mentioned, you probably mean escape velocity. This is about 11km/s at the surface of the earth. So that if you were travelling slightly more than 11km/s on earth, your kinetic energy would be slightly larger than your potential energy due to gravity, and you would escape the gravity well. If you were to climb the ladder to a point of geostationary orbit, the escape velocity would be smaller, because you are farther from the center of the earth. The escape velocity in this case is whatever your velocity is due to your rotation with the earth. If you are really far away from earth (and we pretend there are no other objects in space) your escape velocity will be very small, but not quite zero, because the earth would still pull on you a little bit.

    10. Re:Terminal velocity by Anonymous Coward · · Score: 0

      If this question has already been answered in more clarity then please disregard yet another "I know it too!" /. explaination.

      The idea of escape velocity is based on how much energy you'd need to have leaving the surface of the earth (which is related to your take-off speed) so that the force of gravity from the earth doing work on you until you're infinite distance away would just balance out and allow you to escape from the earth's graviational influence. So climbing up a big a ladder wouldn't require an escape velocity, but you'd still be doing an amount of work in climbing up equal to the amount of kinetic energy you'd need in blasting off from the ground and make it to that height.

  24. An abridged brief history of the space station MIR by brad-d · · Score: 0, Offtopic
    Once upon a time there was a space station called MIR. Then one day a wise man said "What goes up must come down!"; and thus ends our brief history of the space station MIR.

    Thanks for watching.

    --
    -Brad
  25. NY Times says so, huh? by stratjakt · · Score: 2, Informative

    You sure they're a bunch of rocket scientists with cold, hard facts and plenty of good data and insight, and not just complaining because of a political agenda - ie; it's election time and they're running a slurry of "look how the conservatives are wasting our money for broken stuff when they could be giving prescriptions to old people" articles?

    Who cares if its a jumping off point for anywhere? It was never intended to be, AFAIK. It was never meant to be an interplanetary gas station. It's an orbiting research laboratory, plain and simple.

    It's value to the scientific community is tremendous, it allows a ton of research into weightlessness, living in space, etc. That's its purpose.

    --
    I don't need no instructions to know how to rock!!!!
  26. Space Station by RayBender · · Score: 4, Insightful
    It seems to be fashionable to complain about the space station these days, but the fact is that the current mess in U.S. spaceflight has more to do with funding priorities than any details of the space station design or implementation. IF Congress had been willing to spend a reasonable amount of money up front, so that a number of painful design compromises had been avoided, then we'd have a working, useful Shuttle/Station infrastructure right now. I'm talking about things like the decision to go with solid boosters on the Shuttle, or the decision to abandon Skylab. Remember, after Apollo, NASA saw it's budget drop by 80% and stay there.

    Space development is a big bootstrap problem, and the only way to get a virtuous cycle of development and payoff going is to prime the pump with lots of cash. What happened was that funding levels stayed at a level below "critical mass", but have been maintained long enough that it still adds up to a lot of money. Unfortunatly it's been frittered away in a long string of abortive, wasted efforts (Skylab, Freedom, NASP, X-33, X-34, SLI, OSP, etc etc.) If they had just STUCK with any one of those long enough to actually make it work, instead of abandoning it as soon as the first development challenge came along, MAYBE we'd actually be somewhere by now...

    As for the decision to work with the Russians on ISS; if we hadn't done that there wouldn't BE a space station. We'd still be on the ground. Notice how the Russians currently supply: the core module, propulsive attitude control, orbit maintenance, life support functions (O2, CO2 removal, water, food, sleep locations), crew transport, the EVA equipment being used, a major part of the power, basic telecom, and some other things. The U.S. supplies: a mostly unused lab module (complete with air leak), some power, a $700 million connector node, high data-rate comm and a lot of paperwork requirements.

    As for NASA's progressively more and more conservative attitude; that spells the death knell for actually doing anything. If you can't transfer fuel in space because it might be danegrous, then you won't actually ever go anywhere beyond LEO or maybe the Moon (in limited cases). Captain Obvious says: space has risks. You have to just learn how to deal with them, not just sit back and decree you won't ever run them. At least not if you want to actually accomplish something... duh.

    --
    Human genome = 3 billion base pairs = 6 GBit. Windows + Office = 20 Gbit. Which is more impressive?
  27. Stupid americans.. (no, not all americans) by topham · · Score: 1, Insightful

    Bitch and moan about the influence of the Russians, but if it weren't for them the space station would have been abandoned by now.

    1. Re:Stupid americans.. (no, not all americans) by pr0f3550r · · Score: 1

      Don't forget, the only reason why we have gone into space at all is because of the Russians (USSR). Space so far is a capitalistic loser. America and Russia have sunk so much money into it with only significant acedemic results to show for it. For the bean counters that isn't a good reason. Without the adversity of the cold war, I doubt we would really 'be there' at all.

    2. Re:Stupid americans.. (no, not all americans) by niall2 · · Score: 1

      Thats a two edged sword. If it wern't for the Russians we wouldn't have built the thing in the first place. No need for US funded unemployment for Russian engineers. Hence no real driver to keep the shuttle fleet flying and more money for real development of the Shuttle replacement. Who knows, by now we might be out of low earth orbit. Maybe even a space elevator.

      Epomethian crystal balls rarely show you anything but what you want to see.

      --
      Today is a gift. Save the receipt.
    3. Re:Stupid americans.. (no, not all americans) by Anonymous Coward · · Score: 0

      For the bean counters that isn't a good reason.

      Not exactly. There are certain industries right now, which are profitable, and directly related to space. One is communications - there are plenty of (geostationary) satellites, making money for their owners. Another one is space imagery - remember Ikonos?..

      The space now is for capitalists also :) . In early 90s the Europe made tons of money on launches; eventually it made US to create Delta-4 and Atlas-5...

  28. Re:Those damn Russians by mwood · · Score: 2, Insightful

    The Russians *do* have a shuttle, or at least they did, but they never scraped up enough money to fly it. What ever happened to Buran?

    (I'll be mildly amused if it turns out to be Russians who create the materials needed for an orbital tower. Hmmm, it *was* their idea....)

  29. Governments and science by Anonymous Coward · · Score: 0

    This is what happens when governments stick their oars in on scientific projects, you end up with something completely useless when originally it would have been very useful. As scientists we should learn to become a lot more force full and point out to the politicians how messing about with certain projects will destroy them.

    Politics has no place in science.

  30. Escape Velocities=Moon is Best by Spencerian · · Score: 4, Interesting

    To escape the Earth's gravity and not be forcibly pulled back, you would have to leave at about 25,000 MPH, or about 7 mi/sec. That's a lot of energy to move a moon shuttle from Earth orbit. Note that it took the entire, very large third stage of the Saturn V rocket just to move the LM and CSM to the moon. If you have small payloads, like space probes, it's not so bad. But economically, there's a way to spread things around.

    A space station still works great as a waypoint. It just wouldn't be practical to start your adventure to anywhere except the Moon from there. So, create a new shuttle that can better move men and supplies with much greater abort options (hint: Fly the shuttle by a new next-gen plane to near-space [62 mi) then pop the bastard from there with far less needed fuel and still keep an abort option as both orbiter and booster plane are glideable or have powered-flight capacity).

    Such a station would indeed have at least two (backups, remember?) moon shuttles, flyable only in space. What? Fuel? Who says you need to use liquid fuels? Try solids that can be lit and relit in space. The fuel cores could be sent on shuttles without as much worry about volatility than liquids. There is one way to stop a burn in space--stop the oxidizer (you're in vacuum, figure it out). Hypogolic fuels (ones that dont need an igniter--they burn when two substances touch) are still a nice bet as well, and may be safer to upload in separate trips.

    Let the moon itself be the fuel depot, optionally--there is probably a way to produce what is needed there.

    From the moon, with its puny 1.47 mi/sec escape velocity, trips to anywhere work great and require less energy to achieve. Most importantly, astronauts would have TWO in-space safe-haven return locales in case things get ratty somewhere along the Earth-Moon transits.

    Once you're in route to Mars, however, you better be able to make oxygen from a can of Spam, because rescue options would be pretty sparse.

    --
    Vos teneo officium eram periculosus ut vos recipero is.
    1. Re:Escape Velocities=Moon is Best by Theaetetus · · Score: 4, Informative
      Small point of order - technically, L4 or L5 would be the best jumping off points. Actually, L1 would work great, too, except for the necessary station keeping. However, that might be offset by the fact that if you just give something a push away from L1, it'll accelerate, while if you push something away from L4 or L5, it'll just go into orbit around those points.

      -T

    2. Re:Escape Velocities=Moon is Best by Ribald · · Score: 5, Informative

      What? Fuel? Who says you need to use liquid fuels? Try solids that can be lit and relit in space. The fuel cores could be sent on shuttles without as much worry about volatility than liquids. There is one way to stop a burn in space--stop the oxidizer (you're in vacuum, figure it out).

      Hmm. I'm not sure it's that easy. I'm pretty sure that solid-fuel rockets have the oxidizer mixed in with the fuel and are fully self contained. The SRBs on the Shuttle, for instance, have nothing pumping an oxidizer in.

      There are (in my experiences) two types of propulsion engineers--those who love solid fuels, and those who hate them.

      On the positive side, it keeps you from messing with those nasty hypergolic fuels like hydrazine.

      On the negative side, once you light it, there's no easy way to stop it until it's out of fuel--it's like a big highway flare. IIRC, if the shuttle needs to abort early in the launch sequence, the only thing to do is to jettison the SRBs and let them go flying merrily on their way (to be destroyed later by range safety).

      Liquid fuels can be throttled or shut off. A solid booster's thrust can only be controlled by how the fuel is poured in the casing (star patterns and whatnot give high initial thrust, then back off), and not easily shut down.

    3. Re:Escape Velocities=Moon is Best by Spencerian · · Score: 3, Informative

      Yep, I agree. That's how current solids and liquid fuels work.

      But anything is impossible until its not. I don't have a real answer, since I'm just an enthusiast, not an engineer. A solid fuel has to be stoppable--the question is how could it be done and still be relightable? That's a nice new engineering question.

      Unfortunately, once the Shuttle SRBs are lit, NOTHING can be done to abort until they are spent. Attempting to let them loose while powered may likely create a Challenger-esque ET destruction sequence, either by collision or imbalanced separations, leaving the Orbiter/ET to tumble.

      Oh, yeah. While nice, hypergolics are ugly. But cryogenic fuels are worse.

      --
      Vos teneo officium eram periculosus ut vos recipero is.
    4. Re:Escape Velocities=Moon is Best by mangu · · Score: 1
      A solid fuel has to be stoppable


      Why? Of course, it would be nice if it were stoppable, but there are many impossible things that would be nice, too...

    5. Re:Escape Velocities=Moon is Best by confused+one · · Score: 2, Interesting
      There's a new generation of solid rocket motors in the works that use a solid fuel core and a liquid oxidizer. The solid fuel is usually a rubber or parafin. The oxidizer can be LOX, H202 or NOx. To turn off the engine, as suggested, you simply shut down the pump, to throttle the engine you reduce oxidizer flow.

      It works & NASA is seriously interested. The Scaled Composites is using a rubber + NOx engine in it's X-prize entry, SpaceShipOne.

    6. Re:Escape Velocities=Moon is Best by ckaminski · · Score: 1

      Then that is what we call a hybrid solid/liquid rocket motor, and not a solid rocket motor, right?

    7. Re:Escape Velocities=Moon is Best by Anonymous Coward · · Score: 0

      At least one of the X-Prize rockets is hybrid...solid fuel, liquid oxidizer. Maybe that's the right direction (though my personal favorite is the nuclear lightbulb).

    8. Re:Escape Velocities=Moon is Best by Anonymous Coward · · Score: 0

      There's really no such thing as a stoppable solid-fuel rocket, unless you want to try to rig some kind of crazy fire-extinguisher for it.

      The closest thing to it is the "new thing" right now, hybrid rockets. Basically, you use some kind of jellied fuel (think high-tech sterno) in place of the regular solid fuel, and pump in the oxidizer (liquid oxygen is common). The rocket can be throttled/stopped by controlling the oxidizer flow, but you still get most of the advantages of the solid-fuel rocket.

    9. Re:Escape Velocities=Moon is Best by confused+one · · Score: 1

      you are correct.

    10. Re:Escape Velocities=Moon is Best by Chris-Mouse · · Score: 1

      Why does a rocket have to be either solid or liquid fueled? Why not a hybrid?
      Use a solid booster core containing fuel only, and pump in oxidizer. Alternatively, have a solid oxidizer and pump in fuel.
      It shouldn't be too hard to find a combination that works.
      A Hypergolic combination is also probably possible.
      A combination of solid fuel and liquid O2 oxidizer is also handy in that the oxidizer could be used as an emergency oxygen supply for life support.

    11. Re:Escape Velocities=Moon is Best by promethean_spark · · Score: 1

      This is how the hybrid rockets for the spaceship one x-prize contestant works. Very large model rockets also use this system. A cylinder of fuel with a small hole down the center is kept in the engine tube with the exhaust on the bottom, and nitrous oxide or pure o2 is pumped down the middle of the solid core. It can be started and stopped easilly and doesn't require hydrogen storage, which is tricky. However, I doubt hybrid rockets will see much use for moon/mars missions. More likely we'll see a nuclear-thermal engine which uses nuclear heat instead of combustion heat, or some sort of nuclear-electric thing like a plasma rocket. Nuclear fuel has such a high power density that once the can of worms is opened (as it is being now), it's use will quickly become near ubiquitous in high energy applications beyond earth orbit.

    12. Re:Escape Velocities=Moon is Best by BillyBlaze · · Score: 1
      Try solids that can be lit and relit in space.

      As others have said, shutting down solid fuel rockets is difficult. But it's not impossible. See here:

      You can shut down most solids by blowing open vents in the casing, because modern solid fuels don't burn well except at high pressure. In fact, most solid-fuel ICBMs do shut down their solid stages that way, to minimize trajectory errors.

      The shuttles don't do this because it's too violent, as the SRBs are right next to the tank and the orbiter's wings. But if you could do this reversibly in space, it might be possible. You would need to be a pretty big valve. Or maybe you could just dialate the nozzle.

      Stacking many small solid fuel engines could also be helpful. If the mission design is such that energy is more important than power, it might be useful. It might also be more reliable than one big liquid fuel rocket - if one doesn't light, just jettison it and light the next. (As long as it never explodes, and the top of the stack could take the compression.)

  31. Google link by Anonymous Coward · · Score: 0

    It's real easy...paste the title into Google News search and it always comes up.... link

  32. Zero-gee sex by Anonymous Coward · · Score: 0

    If its is too undermanned for science experiements and in a too inclined orbit for moon launches, perhaps there is another use for this white elephant.

    1. Re:Zero-gee sex by PudriK · · Score: 1

      As someone once pointed out that we've been sending mixed gender crews up there for years, so it's pertty likely that it's been done. That said, look what porn did for the internet? Perhaps once NASA cuts funding for the ISS we can fund it with the "art" film industry.

    2. Re:Zero-gee sex by Anonymous Coward · · Score: 0

      What did the mixed genders have to do with it? There were plenty of rumors of certain recreational activities on the Gemini flights... Especially when the heart-rate monitors went sky high.

  33. ISS never was intended for "jumping off" by PSaltyDS · · Score: 2, Insightful

    "And did you know that to accomodate the Russians, the space station is in an orbit that makes it almost useless as a jumping off point to anywhere?"

    Since THIS space station was never intended to be a "jumping off point", why is that a problem? Since the Russian capsule is the only way to get people there and back for now, accomodating thems seems like a good decision at this point. If we get to build a space station intended for "jumping off" in the future, it will be built in the required orbit, and I hope Russia, Japan, China, and lots of European countries join in on it!

    --
    Any technology distinguishable from magic is insufficiently advanced. - Geek's corollary to Clarke's law
  34. Re:handing the russian's money by hplasm · · Score: 1

    True, and now they have a monopoly in ISS Service and Transport, Inc.

    --
    ...and he grinned, like a fox eating shit out of a wire brush.
  35. WTF? +3, Informative? by Michael's+Mommy · · Score: 0

    This was posted after another Google mirror link (by the way, you can replace Google with slashdot in the bar), which was given a -1 for Redundancy... but this guy gets 4 more points for a SCO Signature? Yeah, this place is pretty fair.

    1. Re:WTF? +3, Informative? by Jugalator · · Score: 1

      You're talking like it was a single unfair moderator doing the moderation here. Actually, it's a whole lot of moderators, sometimes with completely different opinions about things. Some moderators might have thought the -1 one was OK, but not noticed it due to browsing threshold, etc...

      --
      Beware: In C++, your friends can see your privates!
    2. Re:WTF? +3, Informative? by PatrickThomson · · Score: 2, Funny

      Dude, chill. I took so long finding out how to get the google referrer that all the other stories were posted; when I started looking the article was 0/4. I suppose that makes me a karma whore, but if you check my history you'll see i'm recovering from a time when I forgot to post anon on a big bunch of crap penis jokes.

      --
      I am one of many. My idea is not unique, nor do I expect my voice alone to sway you. I speak in a chorus of opinion.
    3. Re:WTF? +3, Informative? by Anonymous Coward · · Score: 0
      i'm recovering from a time when I forgot to post anon on a big bunch of crap penis jokes.
      lol. you don't seem to be doing too bad, plenty of funnies.
  36. Why are you by AndyRooney · · Score: 1

    Why are you assigning "Moon is Best" to "Escape Velocities"? That's always going to return true, you know.

  37. diplomatic token. by QEDog · · Score: 4, Insightful
    As the article says:

    For instance, orbital changes to accommodate Russia after the cold war made it harder to use the station as a launching pad.

    Originally the ISS was going to serve as the garage for exploration of the solar system. But, political reasons for collaborating with the russians ("let's be friends to show everyone that the cold war is over") forced to change the orbit four out of the sola system plane to let the russians, from their higher latitude launch pads, reach it and help a bit. The ISS became from one of the greatest scientific endevours to one of the most expensive diplomatic tokens ever.

    --
    "There is no teacher but the enemy."-Mazer Rackham
    1. Re:diplomatic token. by sphealey · · Score: 2, Insightful
      Originally the ISS was going to serve as the garage for exploration of the solar system. But, political reasons for collaborating with the russians ("let's be friends to show everyone that the cold war is over") forced to change the orbit four out of the sola system plane to let the russians, from their higher latitude launch pads, reach it and help a bit.
      There were also those unstated goals of "let's keep all those Russian rocket scientists employed so they don't have to think about going to North Korea, or even China, to feed their families", and "let's keep some sort of friendly, open relationship with a country which is currently on the mat, but which historically has always had the potential to be a great power, and with which we often disagree politically". Both of which are quite valid reasons for what was done, although not anything that can be spoken aloud.

      sPh

    2. Re:diplomatic token. by KurdtX · · Score: 1
      The ISS became from one of the greatest scientific endevours to one of the most expensive diplomatic tokens ever
      I'm not even going to go into your spelling, but did it ever occur to you that maybe including nations other than the US was for our benefit, not theirs? MIR was doing okay (by their standards), but the US forced the Russians to kill it so they could put their resources into the ISS. And, with America gripped by the fear and political hoopla generated by the Columbia disaster, the Russians are pretty much the only way up or down right now.

      Sure the Space Shuttle's a deathtrap (won't go into this either), but if it seems as if this "diplomacy" is saving our asses right now. Laugh at how dated their tech is, but that's because they solved a problem once and didn't decide to start all over just for fun. Yes, diplomacy is important (and often opposite scientific goals), but there are a lot of valid reason for including the Russians (and Europe, and Japan).
      --

      Kurdt
      I'm not anti-social. Just pro-technology.
  38. Re: link & credit by Anonymous Coward · · Score: 0

    you forgot to add "*reprinted without permission from.... [source]"

  39. Umm, I missed a few things by mwood · · Score: 2, Insightful

    How does the Challenger explosion connect with orbital refuelling? I suppose the ISS is a lousy place to store SRBs on cold days, but (a) the SRBs are thrown away before you reach orbit, and (b) one day in vacuum is as cold as another. Naturally fuel storage and transfer wouldn't take place inside the habitat, anymore than the corner gas station keeps its gasoline in jugs stacked in the office. Of course, the gas station is surrounded by oxidizer and the space station isn't, so fuel safety is a somewhat different proposition in orbit....

    Why are people questioning the energy cost of hauling fuel and interplanetary spacecraft to the moon for launching? That's the dumb way to do it. You make the fuel and the spacecraft *on the moon*. The whole point of starting from orbit, or from the moon, is to avoid hauling hundreds of tons of stuff up from ground level in the first place. It's been the plan for 50 years or more.

    1. Re:Umm, I missed a few things by 0123456 · · Score: 1

      "How does the Challenger explosion connect with orbital refuelling?"

      The shuttles were going to carry liquid-fuelled boosters to launch interplanetary probes like Galileo. After Challenger blew up they rethought that and cancelled any such future flights.

      "You make the fuel and the spacecraft *on the moon*. The whole point of starting from orbit, or from the moon, is to avoid hauling hundreds of tons of stuff up from ground level in the first place"

      And how exactly do you expect to "make spacecraft on the moon", without "hauling hundreds of tons of stuff up from ground level"? How easy exactly do you think it is to build a spacecraft from rocks with no tools or factories?

    2. Re:Umm, I missed a few things by HBI · · Score: 1

      And how exactly do you expect to "make spacecraft on the moon", without "hauling hundreds of tons of stuff up from ground level"? How easy exactly do you think it is to build a spacecraft from rocks with no tools or factories?

      We build infrastructure, that is how. No one said this was a day's endeavor or even ten years.

      --
      HBI's Law: Frequency of calling others Nazis is directly correlated with the likelihood of the accuser being Communist.
  40. station, the by kulakovich · · Score: 4, Informative

    1) Once the U.S. congress cut the funding for the habitaion module, the ISS officially became an orbiting pork barrel. It takes 2.5 people to maintain the station, and with 3 aboard that's .5 peopple for science. The hab module would have accomodated 7 scientists.

    2) On fuel-in-space and There is no such thing as volatile fuel in an atmosphere-less environment.

    Let's keep looking at this: Volatility doesn't mean simply explosive, and it is true that fuel requires an oxidizer in space, however, here are some problems:

    a) Fuel is "sticky". Not sticky like glue, but when it comes into contact with things in microgravity, it stays there.

    b) Fuel is caustic and corrosive. There are so many things that we do not want fuel sticking to, such as gaskets, joints of mechanisms, windows, experiments, instruments, and space suits because

    c) Much of the fuel for satellites and such are not simply liquid oxigen and nitrogen, but stuff like Hydrazine, which has too many immediate dangers to list. In short, a small amount coming in through an air lock after an EVA could asphyxiate everyone on the station, be ignited by static, etc.

    d) In case all that wasn't enough - just how can we approach the ISS if there is a cloud of fuel around it*? We can't fire any thrusters (with their own oxidizers) into a cloud like that.

    Ok I'll zip it now.

    kulakovich

    * Yes, I know, there is already a cloud of bits and pieces and ice and etc. But that is nothing compared to a fuel leak.

    1. Re:station, the by Theaetetus · · Score: 1
      d) In case all that wasn't enough - just how can we approach the ISS if there is a cloud of fuel around it*? We can't fire any thrusters (with their own oxidizers) into a cloud like that.

      At least to this point - use solid or liquid fuel, not pressurized gas. That way, if there's a "leak" in the container, it'll just stay still, not spray out everywhere (remove the excess air from the container - keep it at near-0 pressure inside, no matter how full it is). Then, no worries. Technically, you wouldn't even need a container if you used solid fuel. Just "tie" the chunks of fuel to a tether hanging outside the station. But you'd want a container to protect them from micrometeorites and such. Anyways, no danger of a "cloud of fuel".

      -T

    2. Re:station, the by kulakovich · · Score: 1

      Thats a good point - alternately, we could rely on ion engines and not have to worry about as much oxidizer or fuel. Of course, then there is Prometheus...

      kulakovich

    3. Re:station, the by mrfrostee · · Score: 1
      Once the U.S. congress cut the funding for the habitaion module, ...

      Congress did not cut the the Hab module, The Bush Administration did. I watched the hearings when then NASA Administration Dan Goldin tried to explain the reasoning behind the the directive to Congress and they were as suprised as anyone else. Goldin's explanation was full of juicy tidbits like "The President made his budget priorities clear when he was a candidate, and the American people chose".

    4. Re:station, the by mangu · · Score: 1
      just how can we approach the ISS if there is a cloud of fuel around it*?


      In a vacuum, a cloud never forms, because gases expands pretty fast. A leak in a fuel tank in space would be a stream of molecules leaving the station vicinity at thousands of meters per second. A cloud only forms inside the atmosphere because the gas molecules lose velocity to air molecules.

    5. Re:station, the by Anonymous Coward · · Score: 0

      Sounds almost like the case for much-less-toxic (kerosene) and non-cryogenic (hydrogen peroxide, anyone?) propellants...

      Yes I know that it seems a bit too unorthodoxal, but the advantages to have a "gas station" in space are too large to just sneeze at :) .

    6. Re:station, the by kulakovich · · Score: 1

      Point taken. Especially on the velocity of the leak. Cloud was a lose term at best. However if during operations a high volume/low pressure leak were to develop, manipulation of the leaky item could lead to a lot of fuel dissipating around and/or sticking to surfaces around the station. However temporary (and I was thinking in terms of days, which was wrong, obviously) there is a hazard. Similar to the worries that cropped up after Challenger around deploying a fueled satellite from a shuttle.

      My understanding is that currently there is a minor debris field forming in the ISS vicinity/wake. Wouldn't like to add solid fuel particulate, etc. to it. Not to mention whoever just brought up peroxides.

      kulakovich

    7. Re:station, the by kulakovich · · Score: 1

      You are correct. In actuality, Bush told them to correct the 4B$ cost overrun, which NASA did by cutting the original Hab design, the Crew return vehicle and I believe something to do with a station-keeping propulsion module.

      So it could even be said that NASA cut the Hab module.

      However, we also need to be wary of people asking NASA to do things and not putting up the funding - I am sure we are all painfully aware that Bush's 1B$ increase to the NASA budget won't buy a pack of peanuts on the next moon flight.

      kulakovich

    8. Re:station, the by PudriK · · Score: 1

      You didn't pay much attention in high school science class did you?

      Any liquid has a vapor point, which is a function of temperature and pressure. If you expose that liquid to a vacuum (actually just very low pressure), it will vaporize. Also, many of the liquid fuels we use (ie hydrogen and oxygen) are gases that are held under high pressure to reduce storage volume and hence tank weight. Remember, too, that volatile means chemicals with low vapor points, not "explosive". Gasoline is so dangerous because it is volatile (it releases a lot of gasoline vapor), and it is the vapor which combusts.

      Of course, solid fuels don't have this problem.

      However, the other thing that needs to be noted is that gases will not combust unless they are in the right ratio. A tank full of fuel vapor will not burn unless it is mixed with an appropriate ration of oxidizer, and for most fuels this is not a broad range.

      Lastly, another risk of volatile fuels is not only combusition (low risk) and corrosive (high risk), but also a leak will result in a constant thrust applied to the vehicle, which will disturb the orbit.

      Not to say it can't be done, but all these factors, and I'm sure many others I don't know, must be weighed in selecting propulsion.

    9. Re:station, the by DarthBart · · Score: 1

      2) On fuel-in-space and There is no such thing as volatile fuel in an atmosphere-less environment.

      Bull. The bipropellant motors on most satellites and on the shuttle use a combination of MonoMethylHydrazine and Nitrogen Tetroxide. They're hypergolic, meaning they'll light off on contact.

      A little burp in the fuel system can do Bad Things(tm). See

      http://www.amsat.org/amsat/sats/ao40/ao40-faq.ht ml #BANG!

      for an example.

    10. Re:station, the by Theaetetus · · Score: 1

      You're right - was thinking about solids, not liquids.

  41. even more added insight by Anonymous Coward · · Score: 0


    I have worked at [company name] since before the first [product name]. I will post in [promotion location] some added insight to this after work. Obviously, I can not post from work.
    What I post will be my opinion only, and not that of [company name] or my employer. Look this evening, around [promotion event time].

  42. Mir by david.given · · Score: 5, Interesting
    What I don't understand is why the ISS wasn't built next to Mir.

    Okay, Mir was, towards the end, practically falling apart. But... it worked. It had guidance systems, attitude control, life support, power systems, everything you need for a long-term space vehicle. It also had mould, dents, leaks and a shredded solar panel, but we're not that bothered about that.

    Start building the ISS as a set of add-on modules to Mir. Take advantage of Mir's facilities until you get the chance to replace them: run off the existing power bus until you get the replacement solar panels sent up (or, preferably, some RTGs). Use Mir's life support until the air recycler is installed. etc.

    Eventually the new modules will be supplying all the functionality and the old parts of Mir will be unused. At which stage, you can either use them as living space, or depressurise them and mothball them. Maybe one day you can recycle the raw materials; even as scrap, Mir was ludicrously valuable.

    But no, Mir went down in flames and the ISS went down in budget. All for annoying political reasons. IMO it's highly unlikely that the ISS will ever do anything useful. By the time it gets large enough, the commercial stations will be eclipsing it.

    1. Re:Mir by LooseChanj · · Score: 1

      Because if we (the US) had agreed to use Mir as some sort of construction base, in all likelyhood NONE of the russian ISS elements would ever have been launched. It wasn't a pure black & white decisions, there were reasons to do just as you say, but what I said above is what tipped the scales.

      --
      Mix the failings of Usenet with the shortcomings of the World Wide Web and the result is slashdot.
    2. Re:Mir by kaiidth · · Score: 1

      You have it in one. Back in the days when Mir's future was 'under discussion', the papers were full of dismissive comments on the subject of the station; it was mouldy, it was leaky, it was dangerous, there had been accidents... the mere fact that each of these problems had apparently been safely contained and dealt with (I find that impressive, frankly) was apparently irrelevent. The implication was that no space station that NASA would build could ever suffer from such embarrassing issues.

      Given that the reality of the situation is clearly that the recent incarnation of NASA do not and have not succeeded in building and maintaining a space station single-handed, mouldy or otherwise, it seems like the only way to save face at this point is, "Well, why the hell do we really want a useless bloody space station anyway?"

      I would have loved it if NASA had succeeded in opening up space, but I suspect that the American spirit has moved on; space has been 'done' and found not to be particularly shiny or pretty. Let the Russians take it, or the Chinese, or whoever has the guts; just hope that the next US move won't be the militarization of near-Earth... to ensure nobody else gets it either.

      Tin-foil hat removed, on with life :-P

    3. Re:Mir by bobbabemagnet · · Score: 1

      Because anything that is compatible in the interface between the ISS and MIR might be a step backward from our capabilities. Why attach ourselves to aging technology that we intend to make obsolete and force ourselves to be compatible with it when we could be creating new and better systems that work much better. If the locking mechanism for attaching to MIR was less than perfect, I wouldn't want my brand new space station to have to work with it. It's bring ISS down to MIR's level.

  43. Lifting orbit using Progress ships. by sorlov · · Score: 1

    Progress ship _can_ support the station for as long as needed. They are doing it for more than a year already (remember that the last Shuttle flew more than a year ago). I guess you're confused by how much propellant can Progress carry vs. Shuttle. Of course Shuttle can carry more, but that only means that you need more Progresses than Shuttles to support the station's orbit.

  44. Volatile fuel? by Ribald · · Score: 1

    One interesting insight: after the Challenger explosion it became obvious that we would never refuel a rocket with volatile fuel at a space station because the threat to the station would be so great.

    Volatile fuels like, say, liquid hydrogen and oxygen? Yeah, that's scary. Really 'volatile' stuff.

    Everyone who saw Challenger's loss--remember what it looked like? Try here if not. No huge fireball (for the size of the vehicle, anyway) like you'd expect from truly 'volatile' fuels. There was a good amount of fire, but I believe most of the fuels were converted to steam. Even the fuel in the solid rocket boosters (ammonium perchlorate and aluminum) isn't what I'd call 'volatile'--it's designed to burn steadily. The hydrazine used for the OMS engines (and RCS thrusters, IIRC) is another issue--hypergolic fuels are quite dangerous (remember those old WWII videos of German V-2 rockets falling over and exploding?), but there's not all that much of them.

    At any rate, the cause of Challenger's loss was the destruction of the external tank's structural integrity, which allowed the liquid hydrogen (and oxygen) to escape and ignite. I'm relatively certain the ISS already has LOX and liquid H2 tanks for the fuel cells (unless all power comes from the solar panels) and oxygen/water generation. What's the issue?

    Granted, if we're talking about the shuttle, it doesn't use its main engines after orbit insertion (as the fuel tank is jettisoned), so all it's got is the OMS engines, and like I said--hydrazine is nasty shit. I can understand not wanting a bunch of it stored on the station. Linking that to Challenger doesn't make sense, though--it wasn't hydrazine that killed them.

    Of course, they could park a few tanks a safe distance away if they could keep them in the same orbit. Maybe at the L1 point that would work, but we're into a whole new argument there...

    --Ty

    1. Re:Volatile fuel? by Anonymous Coward · · Score: 1, Informative
      Eh, the V2 had no hypergolic propellants but ethylalcohol (cut with water) and liquid oxygen.


      Yes, hydrazine + IRFNA is a nasty combination... but still it is easier to handle than LH2 + LOX. You don't need to cool it, it doesn't vaporize off, and because it is hypergolic you will never find yourself pumping 'nasty' stuff into a combustion chamber where there is no burning going on.


      There are no 'safe' rocket fuels. But in space (rather than inside the biosphere) hydrazine is manageable just fine.

    2. Re:Volatile fuel? by HyperbolicParabaloid · · Score: 1

      The Challenger explosion was not caused by a problem with the liquid hydrogen tank (well, not at first...). The problem was an O-ring between sections of the solid rocket booster. As Richard Feynman so graphically demonstrated at a press-conference by placina sample of the material in his glass of ice-water: when the stuff got cold (and it was freezing that morning at the launch site) it became brittle. This aloud a jet of hot gas from the burning booster rocket to escape. THAT caused the large tank to explode.

      --


      -------------------------
      A person of moderate zeal
    3. Re:Volatile fuel? by HyperbolicParabaloid · · Score: 1

      placina? I meant "placing a..."

      --


      -------------------------
      A person of moderate zeal
    4. Re:Volatile fuel? by Ribald · · Score: 1

      This aloud a jet of hot gas from the burning booster rocket to escape. THAT caused the large tank to explode.

      Actually, I believe the jet of escaping gas impinged on the lower explosive bolt assembly where the SRB is connected to the ET. When this failed, the SRB pivoted on the upper mount assembly, leading to loss of structural integrity of the tank and subsequent loss of the vehicle.

      But you are correct--the ET was not at fault.

    5. Re:Volatile fuel? by Mr2cents · · Score: 1

      This hydrazine really fascinates me.. from what I know so far(and I could be wrong in some aspects, I admit), it's corrosive, toxic(?), a monopropellant and ignited by electric sparks.
      My questions: what is "hypergolic" and wat is the chemical formula of hydrazine? Any idea?

      --
      "It's too bad that stupidity isn't painful." - Anton LaVey
    6. Re:Volatile fuel? by Ribald · · Score: 1

      Hypergolic fuels are rocket fuels that ignite spontaneously when mixed. The most commonly used combination (IIRC) is hydrazine (which is H2NNH2) and (I believe) inhibited red fuming nitric acid.

      They're handy for manuvering thrusters and smaller rocket motors (liquid hydrogen/oxygen still being the choice for liquid-fueled heavy-lifters), because you don't need any kind of igniter--just squirt some of each in the combustion chamber, and it ignites on its own.

  45. The funny thing about the Pravda... by geeveees · · Score: 1

    "Pravda" is Russian for 'truth', the funny thing is that this paper is the most untrustworthy and only serves as goverment propaganda!

    --
    I am a viral sig. Please help me spread.
    1. Re:The funny thing about the Pravda... by Anonymous Coward · · Score: 0

      Actually these days the Pravda is not a supporter of the government at all. It's still a comunist paper. The problem with the Pravda is that it publishes lots of UFO and new-age nonsense. Did you spot the article about how the Red Army fougth against the OFOs?

  46. Scientific value by Anonymous Coward · · Score: 0

    > It's value to the scientific community is tremendous, it allows a ton of research into weightlessness, living in space, etc.

    Prove it. Cite the scientific papers that are streaming out of the ISS research labs. You can't, because there are practically none.

  47. What risk? by FireFury03 · · Score: 1

    Forgive me for sounding thick, but in space so long as you keep the fuel and oxidizer separate, where's the explosion risk?

    1. Re:What risk? by visgoth · · Score: 1
      "so long as you keep the fuel and oxidizer separate"

      Question already answered, shit happens :)

      --
      My patience is infinite, my time is not.
  48. I.S.S. is a giant welfare project by tarranp · · Score: 2, Insightful

    It is widely known, but little commented on, that the manned space program being conducted by the U.S. and Russia is a collosal waste of money that is producing little in the way of meaningful scientific or technological research. Rather the I.S.S. is primarily justified within the policy making organs of the U.S. government as a means to keep experienced Russian engineers employed and thus minimize the risk of them being employed by a nation with a desire for interconinental balistic missile technology and who are reckless enough to use it.

    Basically, the manned space program in the U.S. and the USSR has become a giant welfare project for aerospace engineers.

    While in the short term this is a cheap way to slow the inevitable acquisition of nuclear weapons and their delivery systems by increasinlg underdeveloped and recklessly led nation states, in the long run it is a losing game:

    First, because the spread of technology is inevitable, and secondly because the field of aerospace engineering is distorted, with many more engineers seeking training in schools than there is a true economic demand for. These people are not only diverted from turning their talents to more productive areas, but later in life will lobby to keep the pork coming.

    President Bush's proposals are an even bigger waste. I wouldn't mind if they were to be funded by voluntary donations, but the thought that people will be taxed to fund this boondogle when they already have to work so hard to make ends meet irritates me. I would like to see government getting out of the fields of scientific research & space travel. Let us keep our tax dollars and spend it on the charities that we want to fund. Let us pick our priorities. I think the results would be quite surprising to people who think that government support is required for these projects.

  49. Re:Those damn Russians by PSaltyDS · · Score: 1

    "...the Soyuz rockets that take like 90% of all stuff to and from ISS."

    This is a significant problem. According to this NPR feature, bringing things DOWN is harder that bringing them UP, and some kind of shuttle (not necesarily manned) is the only way to that. The Soyuz does not have nearly enough RETURN capacity for what they want to do in the future.

    --
    Any technology distinguishable from magic is insufficiently advanced. - Geek's corollary to Clarke's law
  50. over-perlious endeavour by cabazorro · · Score: 0

    From the NYT reading regarding
    the space station several leitmotifs
    emerge:
    Manned spaceflights are too danegrous
    Manned spaceflights are too expensive

    We tend to believe that we have technology
    to make and orbital rendevezvous a trip
    to the groceries but a simple angle shift
    causes mayhem with our puny technology

    The mars mission is succesful because our
    communication and robotic technologie is ripe
    for the endeavour at hand(including co$t).
    The whole equation brakes with human cargo.
    Our rocket and materials technology makes each
    human space flight a dangerous proposition

    --
    - these are not the droids you are looking for -
  51. Sort of by LooseChanj · · Score: 5, Interesting

    Click

    ISS was never intended to be a "jumping off point" to anywhere. The move to 51.6 to accomodate the russians was a political move. Thank Clinton, it was his bright idea to bring in the russians as full partners in the hope their missle techs wouldn't go somewhere else...like say Iran. Given ISS' mission (microgravity research, NOT a spacedock quit watching star trek) any orbit will do, but KSC's due east 28 degrees would be best case in terms of payload.

    I actually turned down a chance to tour ISS elements in the processing facility. :-(

    Amusing ISS historical anecdote: While preparing to close the payload bay doors for the launch of Destiny (the US lab), it was discovered the camera on the elbow of the shuttle's robot arm came within an *inch* of the labs hull. Much hemming and hawwing, and I forget what the final solution was, but I think it's a little amusing that after all the billions had been spent, all the test had been done, they got an "awwwwwwcrap" at literally the 11th hour.

    --
    Mix the failings of Usenet with the shortcomings of the World Wide Web and the result is slashdot.
  52. "accomodate" physics not Russians by BigGerman · · Score: 2, Informative

    I dont think the ISS orbit was chosen to accomodate Russians.
    It takes the least amount of fuel to put something in orbit if said orbit at the the same angle as lattitude of the place you are launching from.
    51.6 degrees (ISS orbit) is lattitude of Baikonur, Russian space port. The space station was started by launching large building blocks by Russian D1 boosters. I do not think there is an equivalent to those in US. So the choice of orbit was natural to maximize the available technology.

    1. Re:"accomodate" physics not Russians by BlueEyes_Austin · · Score: 2, Informative

      You are factually incorrect. Once the US made the decision to bring the Russians into the ISS program, the original inclination of the station had to change.

  53. Re:Those damn Russians by Ryn · · Score: 1

    One Buran is currently located in Gorky Park as a tourist attraction.
    Second Buran was stored in it's hangar on Baikonur, where it was to be sold at an auction. 2 years ago, right after the announcement that it was going to be sold, the roof of hangar has collapsed burying Buran. My hat's off to people who did it.

  54. Need another seven astronauts ? by Anonymous Coward · · Score: 0, Funny


    thats what NASA stands for no ?

  55. It should never have been built... by supersam · · Score: 1

    I have always failed to understand why the ISS was built in the first place! It is like a large floating airport in the middle of the ocean! (take some time to see how aptly the analogy fits)

    If it was supposed to be a "jumping off point" for space shuttles, as the senior Mr. Bush had envisaged, then the best location for it would have been on the Moon. In any case, I dunno how much reduction in size of the spacecraft or an increase in its speed could be gained by having a refueling base so close to the earth!

    The energy and the money spent on this white elephant would have been better utilized in setting up a base on the moon!

    But then of course, hindsight is a wonderful thing!

    1. Re:It should never have been built... by Anonymous Coward · · Score: 0

      I have always failed to understand why the ISS was built in the first place! It is like a large floating airport in the middle of the ocean! (take some time to see how aptly the analogy fits)

      I believe we call those things aircraft carriers.

  56. Translation by Anonymous Coward · · Score: 0

    "Fund the stuff *I* want instead. Oh, and people who work in careers I don't approve of are unproductive."

    1. Re:Translation by tarranp · · Score: 1

      No, I think you missed the point:

      I fund the stuff I want, you fund the stuff you want, and everyone is better off. :-)

      Personally, I think establishing extraterrestrial colonies is a fine idea, and would be very happy to support a scheme towards that end.

      I just don't think I, or anyone else for that matter, should force you to fund stuff you don't approve of, or vica-versa.

      Simmilarly, I do not believe that people who do things I don't approve of are unproductive. Britney Spears is apparently quite productive ;-). My attitude is that using government funding to provide "jobs" that there is no demand for is a losing game. The people funding the "jobs" are not getting what they want (otherwise the government wouldn't be required to intervene) and the people being employed are really wasting their talents.

      Thus the aerospace engineer working on designing the a lightweight mating collar for a docking station could instead be working on buildign a personal aircar, or becoming a doctor, or architect, a dancer/singer/model or something where he is creating wealth by providing a service in demand.

      The current system does nto create wealth. It just leaves all of us, on the average poorer.

  57. True, but... by 0123456 · · Score: 2, Interesting

    On a Mars trip you'd be carrying hundreds of tons of fuel for the return journey, and quite a few tons of supplies of various kinds. That alone makes a half-decent radiation shield for the trip from Earth to Mars... shielding on the way back would be more complicated.

    1. Re:True, but... by edxwelch · · Score: 1

      That assumes that all the radiation is coming from the sun, which is not the case for cosmic radiation

    2. Re:True, but... by 0123456 · · Score: 1

      No, but by far the biggest risk comes from solar flares. Normal cosmic radiation might give you cancer a decade later, but solar flares will give you death in a few hours or days.

    3. Re:True, but... by edxwelch · · Score: 1

      I found this:
      http://www.earthtym.net/spacemyth.htm
      says that cosmic rays are much more harmful than gamma rays and "Without protection against cosmic rays, expected human survival in space would be 17.5 days."
      don't know how reliable the facts are on this site though

    4. Re:True, but... by 0123456 · · Score: 1

      "don't know how reliable the facts are on this site though"

      It's apparently a site for 'moon hoax' nuts: I'll let you draw your own conclusions.

  58. Re:Those damn Russians by dj245 · · Score: 1

    The Buran was basically a shuttle clone anyway, only with minor additional Russian "Wow I never would have thought of THAT!" features. A while ago one was sold on Ebay, but it had no computers, and was basically gutted.

    --
    Even those who arrange and design shrubberies are under considerable economic stress at this period in history.
  59. Re:Those damn Russians by Anonymous Coward · · Score: 0

    Heh. It would have ended up as part of the Boeing Museaum of flight or the Smithsonian Air and Space Museaum I bet.

    Since I live near one of those, I am 50% disappointed.

  60. Pravda.Ru is not your father's Pravda by 21mhz · · Score: 1

    Actually, this site is run by some ex-staff of the eponymous paper after its collapse. They are no more overtly pro-Communist, and they're hardly pro-government, even if they declare their stance as "pro-Russian". In fact, they're as independent as you can get.
    Here's what they tell about themselves.

    --
    My exception safety is -fno-exceptions.
  61. Not an Entirely Bad Orbit by Threed · · Score: 4, Informative

    Given its high orbital inclination, ISS isn't the ideal first stop, but it's still possible to go places. In a simulator, I've gone from ISS's orbit to the moon without changing inclination. It looks scary, but really it's no worse than any other trans-lunar-injection. As for fuel cost, well, the simulator gives you a huge fuel budget but the non-coplanar transfer orbit is still WAY cheaper than changing inclination before heading out! I wouldn't be surprised to learn that the cost is the same.

    For a lunar-orbit-rondezvous mission, I can see one potential problem: the possibility of having to wait longer for a launch window from the surface to the command module.

    All that said, I kind of like GWB's plan of jumping out of our commitment to ISS as soon as possible. Consider it an experiment in international space cooperation, more than a scientific platform. The experiment is over, lets learn what we can from it and move on.

    1. Re:Not an Entirely Bad Orbit by TehHustler · · Score: 1

      You dont play Orbiter do you....?

      --

      TheHustler
      http://www.elmarko.org/ - Useless bilge
      http://www.asylum-games.co.uk/ - Co-Founder
    2. Re:Not an Entirely Bad Orbit by Threed · · Score: 1

      Why yes, yes I do.

      And to clarify my post, I meant that I wouldn't be surprised to learn that the non-coplanar transfer is similar in fuel cost to a transfer from the moon's plane (not counting the plane change, if any). From what I understand, NASA is already hip to this info - they don't bother changing planes except to do tiny mid-course corrections for things like Spirit and Opportunity.

      Anyway, I learned to do the non-coplanar transfer so I could do the Delta Glider Challenge. I'm still no good at landing though :)

    3. Re:Not an Entirely Bad Orbit by ari_j · · Score: 1

      I can land just fine...I just have terrible timing when it comes to re-entry. I usually end up hovering somewhere over Mexico. Maybe I should dig it back out and see if the new version will even run on my laptop.

    4. Re:Not an Entirely Bad Orbit by TehHustler · · Score: 1

      Wait, who are you from the Orbiter forums? Its pretty obvious who I am heh... Just got made a mod on there by Martin and Radu..

      --

      TheHustler
      http://www.elmarko.org/ - Useless bilge
      http://www.asylum-games.co.uk/ - Co-Founder
    5. Re:Not an Entirely Bad Orbit by Threed · · Score: 1

      Same user name as here.

  62. Bush vs Clinton vs Tech by Jameth · · Score: 1

    I find it interesting the way that the station was designed due to politicol reasons as much as technical reasons. Also, I think it makes Clinton shine for what I always complimented him for.

    Clinton decided to sacrifice a lot of technical advantage to stick the station over Russia, which seriously aided international relations. I've always said that Clinton did wonders for international relations.

    Bush, by contrast, pushes a mars mission with the idea of a jump from the moon which the experts say is crap. Bush is clearly only pushing his plans as a way to vitalize the populace. Not that this is unimportant, I just think he should have done it in a technologically realistic manner, or at least plausibly accomplishable manner.

    1. Re:Bush vs Clinton vs Tech by applemasker · · Score: 2, Insightful
      Clinton was never a friend of NASA, often allowing the then-administrator Dan Goldin to slash-and-burn some of the best projects and people out of the agency. However, he did recognize the value of using the ISS as a bridge program with Russia, if not for any other reason to give their rocket scientists something to do besides sell designs to North Korea. Pragmatically, from this view, the ISS has been a good program.

      However, IANARS (I am not a research scentist), but I am unaware of any "flagship" research that ISS is conducting or will conduct in its present 3-person configuration, or even its "Core Complete" projected configuration. I think it's been said elsewhere, without the full build-out of 7 occupants (with at least 4 fully dedicated to science), it is of dubious scientific utility. What puzzles me is how politicials fail to realize that without the commitment to built it to this level of capability, its utility is kept at a bare minimum (about at the level of being able to say once a day or so, "Hey.. look, up in the sky, its the ISS!")

      If we were to throw a few more Shuttle launches at the project, we could have a REAL laboratory. Instead, we have spam in a can inclined at 51.9 degrees. Gee whiz. Remind anyone of the fiasco in the early 70's of the USAF telling NASA what design specs to build into the Shuttle? Look how well that turned out.

      What we need at NASA is a scientist-administrator who has the White House clout to back him up. Though O'Keefe is much better than his tyrannical predecessor Goldin, O'Keefe is an administrator-type bean counter. While NASA, from an institutional point of view, may have needed this "tough love" right now, ultimately, it must be given a scientific leadership as well, starting from the top.

      --
      Bush Lies On the Record.
  63. "Nothing happens unless first a dream" by dpbsmith · · Score: 1

    --Carl Sandburg, "Washington
    Monument by Night," from Slabs of the Sunburnt West

  64. Re:Those damn Russians by Richard_at_work · · Score: 3, Informative

    The Buran flew once, 100% automated and unmanned from launch to landing, at the start of the 1990as iirc. After that, they decided that it was too costly and mothballed the 2 completed and 3 under construction. One is at the Russian National Space Museum, one is in Australia, and the 3 in construction were dismantled. The Energia booster flew a further 3 times, and hasnt been used since due to no need for it (It could have launched the ISS as it stands in 2 or 3 boosts, it could carry a lot.)

  65. Better propulsion technologies needed by Viol8 · · Score: 2, Insightful

    Its all very nice talking about space stations the moon and mars etc but really , its all a bit pointless until a type of propulsion technology is
    created than can get people off this planet as easily as an airliner taking off AND be used in space. Chemical fueled systems just don't cut
    it and Ion engines are so underpowered as to be useless even in space (15 MONTHS just to get to the moon! Gimme a break!). What the solution is I don't know but
    currently we're still at the space vehicle equivalent of a canoe , not even a 16th century galleon, and if we wish to start exploring space then we're going
    to need something a damn site more useful than what we have at the moment.

    1. Re:Better propulsion technologies needed by confused+one · · Score: 1
      Ion engines are so underpowered as to be useless even in space (15 MONTHS just to get to the moon! Gimme a break!).

      That's if we use modest solar power for the energy. If we use Nuclear power, it becomes days. Similarly the Mars mission goes from 9 months in transit (chemical) to 3 months or less in transit.

  66. Not to be unscientific but... by Pax_Tyranus · · Score: 1

    The ISS was pure folly to begin with. It is simply not in our nature to cooperate. We are still animals, not unlike any other on this planet. As such our greatest acheivements (and our most horrifying mistakes) have come from competition, not cooperation. Through the politics that shaped the final ISS project and (politics in general), we acheive comfortable mediocrity, nothing more.

  67. I thought we already refueled the shuttle from ISS by nt2UNIX · · Score: 1

    Didn't Bruce Willis help that Russian guy refuel 2 space shuttles before blowing up that asteroid?

  68. Steam powered space ships by tr0llb4rt0 · · Score: 1

    For interplanetary travel you do not need a combustable fuel. Just mass to chuck in the direction opposite to that you want to travel in.

    A nice big block of water ice would be perfect.

    Heat it (solar heat radiation) and use the steam as thrust to get to mars.

    When there split it (solar power) into hydrogen and oxygen for the landing.

    No muss no fuss no exploding space stations during re-fueling.

    Also if you wrap the ice around the ship then you have an instant radiation shield.

    Simple technology is proven to be the best as far as space exploration goes.

    --
    Worst .sig ever!
    1. Re:Steam powered space ships by Anonymous Coward · · Score: 0

      i guess you'll have to be sitting there a while to heat up and split a sufficient amount of water to do anything useful

  69. a SH#T load of water by Anonymous Coward · · Score: 0

    "i like ISS" t-shirt for sale ...

    i don't know what there is on the moon? it's
    prolly a really cool place to build a kindda
    hubbel telescope thinggy.
    but i can't really imagine having a smelt on the
    moon churning out pieces for an interplanetary
    spacecraft.

    also there doesn't seem to be alot of fuel
    availabel on the moon.

    further me doesn't understand why you have to
    transport fuels (liquiod hydrogen, liquid oxygen)
    to the waiting interplanetary spacecraft.

    if you just shot up a pool load of water and
    "cracK" it in low earth orbit via solar-power you
    could save some bucks on your energy bill,
    considering that solarpanels work much more
    effiecient in outer space (earth orbit that is).

    also liqudifying hydrogen and oxygen is very
    energy consumming ON the surface of earth. now
    consider a liquidfying "plant"/maschine in
    low-earth orbit with the cold temps up there ...
    cheaper.

    also methinks a reusable ferry kindda
    interplanetary spacecraft will be more sustainable
    then a one way "plant the flag" spacecraft.

    the ferry could be used for many different
    kindda mission: moon, mars and (my favourit)
    to the astoroid belt between earth and mars.

    maybe getting some humans to one of those
    'ol astoroids and transforming it into the hule
    of a even bigger interplanetary space craft, maybe.

    basically what we need is a sh#t load of
    liquid water and some descent solarpanels to
    go sunday driving around the solarsystem ...

    some thoughts here: emptyempty2.tripod.com/small_step.htm

    the space elevator can't work, sorry.

  70. Russian Failures... by Nom+du+Keyboard · · Score: 1
    There was just one problem. For the Russian rockets to reach the grand unified station, it would need a different orbit.
    ...
    In its new life, the station was to be a research post, with it and any offspring captive to the planet.

    Can this explain why Russia never made it to the Moon?

    --
    "It's the height of ridiculousness to say for those 9 lines you get hundreds of millions."
    1. Re:Russian Failures... by Felix+The+Cat · · Score: 1

      Can this explain why Russia never made it to the Moon?

      Naw, the Russians couldn't get to the moon because the booster they were developing kept blowing up on the pad. IIRC, it was called the N-1, but I'm at work and can't confirm that. There's a mention of it in the current Air and Space Smithsonian, in an article about the Lunakhod rovers. Interesting stuff.

      --
      Windows is the Acme of computing -- in the Wile E. Coyote sense.
    2. Re:Russian Failures... by Anonymous Coward · · Score: 0

      They made it to the moon. They just didn't find a good reason to send people there.

  71. Why work on GNOME when Motif was doing just fine? by Chemisor · · Score: 3, Funny

    Okay, Motif was, towards the end, practically falling apart. But... it worked. It has widgets, programmers who know it, stability, and attitude (or was that altitude? I forget...) control too. It also has mould, dents, leaks, and a shredded-looking user interface, but we're not that bothered about that.

    Start building GNOME as a set of add-on modules to Motif. Take advantage of Motif's facilities until you get the chance to replace them. Run off the existing codebase until you get the replacement interface set up. Use Motif's technical support pool until the documentation recycler is installed. etc.

    Eventually the new modules will be supplying all the functionality and the old parts of Motif will be unused. At which stage, you can either use them as scratch space, or depressurise them and mothball them. Maybe one day you can recycle the raw materials; even as scrap, those ancient electrons are ludicrously valuable.

    But no, Motif went down in flames and GNOME went down in budget. All for annoying political reasons. IMO it's highly unlikely that GNOME will ever do anything useful. By the time it gets large enough (as if it isn't already), other commercial products will be eclipsing it.

  72. Did you know by Anonymous Coward · · Score: 0

    Without the Russians this past year, those folks up there would have had to jump down for food?

  73. Re:WHITE HOUSE FIRES BACK OVER BUSH AWOL ACCUSATIO by Anonymous Coward · · Score: 0

    You're a dumbass.

  74. What? by Anonymous Coward · · Score: 0

    You mean to tell me you can't get to any where else in space from the space station. How the hell do you do that.

  75. Cold War Joke by mykepredko · · Score: 1

    An American and a Soviet citizen are arguing about their respective forms of government. The American proclaims loudly, "In America, if we don't like the way something is being done, we can walk up the steps to the House of Representatives and complain without fear of retribution."

    The Soviet isn't impressed; "We can do the same thing."

    The American is surprised at this statement and the Soviet citizen continues with, "We too can walk into the Kremlin and complain all we want about America."

    myke

  76. Exactly, ISS is now military pork by Ars-Fartsica · · Score: 2, Insightful
    This is the ugly truth that is often ignored - this project is largely political, with huge bonuses for Boeing etc and Russian engineers who might otherwise be employed by North Korea.

    ISS serves no scientific purpose with its current staff level. ISS serves no functional purpose with its current staff level. The crew has one job - keep it from falling apart. They are in fact custodians.

    It doesn't matter that ISS is a failure in the conventional sense - it is a huge plus for Boeing who I am sure is billing the govt 2x or 3x on every billable task, since there is no meaningful competitor. Mars and the Moon projects will similarly sit alongside missile defense as the pet projects to keep military contractors in the black for the next half century.

  77. hab module by apsmith · · Score: 1

    Actually the problem limiting the station to 3 people wasn't so much the hab module (there have been as many as 10 people on board at one time before, when a shuttle was visiting) as the lack of escape for more than 3 people - there's only one Soyuz escape capsule. There was supposed to be a US vehicle for return that could accomodate 6 or 7, but it never happened.

    Also, I think you're exaggerating the fuel issue. The main fuels likely to be used for major missions staged at the ISS (if that were ever to happen) would be liquid hydrogen, liquid oxygen, and kerosene - possibly also xenon for ion engines. The problem is probably the cryogenics in the constant sun/shade alternations of low earth orbit. I don't think your cloud of vapor scenario is very likely with those fuels; also it would dissipate quickly.

    --

    Energy: time to change the picture.

  78. International is the key word..... by vwjeff · · Score: 1

    Whenever several nations decide to make decisions the process is slow and compromises must be made. This is not new.

    The mission to Mars is suppose to be an international effort. Great, we'll never get there!! Sometimes we have to do it alone. I may cost more but we will have it our way with no compromises.

  79. Ion engines? by Anonymous Coward · · Score: 1, Interesting

    What ever happened to the successfull Ion engines that were used on the deep space probe(s). Load up the shuttle with supplies, truck it up to ISS, use a little remote controlled or pre-programmed Ion powered craft to relay the payload to the Moon and reduce the risk/money/time of building a craft to go from ground to the moon. Funny how you never hear much about the successfull projects from NASA... And I think before we talk about going to mars, we spend our time building our moon station that is a much more viable location for science, and more habitable. I never understood what the whole importance/facination with going to mars as if the moon never existed. Must be the "been there don that" mentality. Funding wise, NASA needs to be corp funded, not gov funded, that way its independent of tax cuts and budget restrictions which are the main contributer to all the malfuntions of late...

    1. Re:Ion engines? by jzarling · · Score: 1

      The ION engines provide a very small amount of thrust. Getting the shuttle to escape velocity with them in thier current state would be impossible. They (ION E's) are meant for good for slow yet steady accelleration.
      In the mid to late 60's NASA was working on a more powerfull system called NERVA - Nuclear Engine for Rocket Vehicle Applications, Basically you used a small nuclear reactor to superheat a chamber, the you shoot hydrogen into the chamber, the hydrogen is excited and it exits the chamber producing a huge amount of thrust. These engines had the thrust and endurance to make Mars a 90 day trip. But they had draw backs. the biggest was wieght not only from the reactor but from the sheilding for the crew compartment.
      By the time the technology became viable the granola eaters began to get jittery about a reactor in space.

      --
      It is better to be the hammer than the anvil.
  80. Industrial Space Facility by Syntroxis · · Score: 2, Interesting
    There once was a company named Space Industries, Inc. They came into being as a private commercial space initiative to build a research base to be launched prior to the Space Station. The Industrial Space Facility (ISF) was to be an unmanned, shirt sleve environment, that would be serviced by the shuttle.

    Several studies supported the ISF, and some even pointed out that a manned presence (even a heart beating) in a microgravity environment would contaminate the microgravity environment.

    It turned out that the desigh was so sensible, that many of the big aerospace contractors percieved it as a threat. An ISF could be placed into orbit for a cost of about $700 million (vs the billions for the station) and would be an inexpensive (compared to the ISS) paltform to screen processes for space manufacturing. If and when an application was found, the operation would become self financing.

    To make a long story short, there are dangers when trying to find a place among the hogs feeding at the federal money trough. The new company was stomped to the ground and eventually went away.

    There is now talk about abandoning the ISS to redirect big $$$ for the mood and Mars exploration. A permanent manned predence in space is too dangerous and expensive to maintain.

    --
    Wherever you go, there you are.
  81. Now that ISS's future is dark, by dddno · · Score: 1

    ...and many many tax dollars have been wasted, perhaps there will be less down the nose talk about ESA's small (and cheap!) module which apparently never seemed big enough for the Americans?

    I'm not cliaming ESA really foresaw this desaster and consequently minimized their contribution, but whatever the reason, more tax USD than tax EUR burnt in the process.

  82. Re:I thought we already refueled the shuttle from by TR0GD0RtheBURNiNAT0R · · Score: 1
    I believe he did. Without movies, how would we get useful info like this? (and those parents' groups say movies rot our brains...)

    --
    This is my sig. There are many like it, but this one is mine.
  83. What's more useless than a flying garbage can? by im+a+fucking+coward · · Score: 0, Troll

    Human sacrifices on mars.

    Sure, you laugh, but what are astronauts burned up in billion dollar bottle rockets if not human sacrifices to NASA's stupidity? Intrepid explorers? Baah, you're part of the problem set then, not the solution set.

    Burn down NASA before they blow themselves up, or send up another rover with 8 year old technology.

  84. Heh.. by Loki_1929 · · Score: 1
    I've got a brief history for you...

    WEEK 1 - Cost estimate: $3 Billion

    WEEK 3 - Cost estimate: $20 Billion

    WEEK 6 - Something breaks

    WEEK 7 - Fixed problem, Cost estimate: $130 Billion

    WEEK 9 - Running out of air

    WEEK 12 - Cost esimtate: $200 Billion, still low on air

    WEEK 15 - Got more air

    WEEK 17 - Sent most humans home, Cost estimate $420 Billion

    WEEK 22 - Redesigned entire station so it does less than half what it was going to do, Cost estimate: $600 Billion

    WEEK 23 - Something broke, Cost estimate $1.2 Trillion

    WEEK 24 - Fixed it, running out of air, something else broke, scaled down design a bit more, Cost estimate $2.8 Trillion

    Anyone ever have a really bad date? Did you try to make it work out, or did you take her home and put the date out of its misery? I think that's the problem - most guys at NASA haven't ever had A date. Thus, when they finally have a "bad date", (aka the ISS), they not only take it to the movies, dinner, and mini golf, they take it on a Carribbean cruise, trip to Europe, flight on the Concord, and finally propose marriage.

    Fellas, let's see if we can figure out if there's another woman we can try with, eh?

    --
    -- "Government is the great fiction through which everybody endeavors to live at the expense of everybody else."
  85. obvious? by TheSHAD0W · · Score: 2, Insightful

    It's obvious to me that there are plenty of safety precautions that can be used to allow refueling of spacecraft at a space station.

    (1) Use binary fuels. E.G, LH/LOX. On Earth liquid hydrogen is seriously flammable, and liquid oxygen will make other things ignite. In space, liquid hydrogen will find no oxidizer to make it burn, and liquid oxygen will disperse into vacuum too quickly to make objects around it burn very well.

    (2) Use breakaway tethers. The other major hazard with using volatile fuels is that fuel components from a punctured tank may jet away, imparting kinetic energy to its source. An incident like this with a spacecraft or fuel storage tank hard-docked to a space station might potentially deorbit both. By attaching both fuel reservoir and spacecraft (while fueling) to the station with a breakaway tether, this danger is significantly reduced.

  86. Credit by Anonymous Coward · · Score: 0

    Dear President Bush,

    Thank you for changing NASA's focus on the ISS. I am sure glad that you found time to research, plan and engineer an alternative approach to our involvement with the ISS.

    Now, I agree that crushing the middle class, preventing satanic homosexual marriages, and leaking the identities of covert CIA operatives are all right-thinking, patriotic enterprises. However, I'd just like to remind you that a badly designed space initiative can hurt a nation as much as a well implemented one can help it.

    So please, put away the spinner and hang up on Karl Rove, then ask the scientific community what the most expedient and efficacious method would be to create a sustainable presence in space would be. And "wait until China nearly beats us to having a station on the moon, then spend 100 times as much" is not an acceptable answer.

    Waitaminute... what am I saying... Bush doesn't give a damn about space except what the military tells him... He allocated 1.5 Billion to encourage marriage, and 1.0 Billion to increase NASA's budget (we're not sending men to f*ing Mars with an additional 1 bil).

    Where oh where could his priorities be....

  87. many reasons why ISS isn't a waypoint by Hurklefish · · Score: 2, Informative

    Although the ISS has been marketed from time to time as a "jumping off point", it's not really designed to be one.

    Even if we did have a properly designed way station, in the right orbit, at the right inclination, there's an entire infrastructure that doesn't exist. To truly get good use out of a way station, you need specialized space craft, rather than a general purpose pickup truck.

    For example, there are very different mission requirements for getting personnel into low earth orbit as opposed to material. It doesn't make any sense to try and use one vehicle, like the shuttle, for both. Material can withstand greater acceleration than people, without the need for life support. So why not have different lifters for people and parts?

    Also, any craft that travel from the earth to orbit have certain needs based on the fact that they travel through the atmosphere, and have to reenter that atmosphere. Aerodynamic design, heat shields, etc. These are design features that aren't really anything except for dead weight when you're trying to go from low earth orbit to high earth orbit.

    A space tug designed specifically to go from low orbits to high orbits could probably do the job a lot better, and more safely.

    High earth orbit also makes a lot more sense as an assembly point. Why would you want to put all your goodies together over the course of time when you still have so much gravity well to climb up out of?

    Low earth orbit is also full of junk. I don't know how many pieces of space garbage they're currently tracking in LEO, but I know there's a bunch of it. Why not have your assembly point a little farther out where there's less stuff to put a hole in your mars spaceship?

    Of course, if you go out a useful distance, you'll need radiation shielding, a lot more than what the ISS has.

    If you're going to be assembling larger craft for manned interplanetary missions, you'll need room to store all your stuff, whether it be vehicle components, reaction mass, consumables, construction crew, whatever. The ISS doesn't have room for any of that junk, even if you through a bunch of inflatable hab modules at it.

    The ISS is a laboratory, and it's serving that purpose pretty darn well, despite the fact that it's not even fully staffed or supplied.

    Imho, we need a way station, but the ISS isn't it, never was, and never will be.

  88. Earth = single point of failure by Anonymous Coward · · Score: 1, Interesting

    I may read too much science fiction, but isn't it kind of a natural selection thing to try to spread human habitation beyond earth? Earth is currently a single point of failure. If it gets whacked, no more human race. You might not personally care, but science shows that species generally try to continue existence. Anything we can do to learn how to live away from earth seems like a good thing. All this simpering about obstacles and costs seems pretty short sighted.

  89. it is our fault by Tablizer · · Score: 2, Funny

    to accomodate the Russians, the space station is in an orbit that makes it almost useless as a jumping off point to anywhere

    If we let them have Afhganastan like they wanted during the cold war, then they would have a more equitorial launching point. Silly Americans :-P

  90. Re:Why work on GNOME when Motif was doing just fin by ianezz · · Score: 0, Offtopic
    Just s/GNOME/Gimp/g, and that's what's actually happened (except that The Gimp is quite useful).

    Early versions of The Gimp were Motif-based (and useful enough to draw Tux), then people decided to write their own Motif replacement, and thus GTK was born.

  91. Re:I thought we already refueled the shuttle from by Anonymous Coward · · Score: 0

    That was Mir that they refueled from. It was treated as "generic Russian space station" but everything was too rickety to be ISS.

  92. TROLL: Re:Bah, Russians by sammyo · · Score: 1

    Read the article, it's by an American Nut Case. Frankly it was probably pretty funny in the original language!

  93. You can go anywhere - just not directly by vik · · Score: 1

    The high inclination of the ISS does not prevent you from going to anywhere. All it means is that you need to do a slingshot flyby of our moon first. That can take you off in just about any direction, including a retrograde Earth orbit.

    Vik :v)

  94. Re:I thought we already refueled the shuttle from by nt2UNIX · · Score: 1

    You know your right. But J-Lo did break up the engagement between Ben and Liv Tyler once they got back.

    Boy I bet he's rethinking how that worked out.

  95. Re:Project Orion by Walt+Dizzy · · Score: 1

    was the idea of using nuc-u-lar bombs to power a spacecraft. Not suprisingly, some of the inventors, mainly Freeman Dyson, had some qualms about setting off large quanitities of fissile material in the atmosphere. But as an interplanetary drive, it's hard to beat. I can't recall the numbers, but I think it's possible to build an Orion-type ship that would reach Mars in a few weeks. Walt

  96. Re: And did you know that to accomodate the Russia by Uber+Banker · · Score: 3, Insightful

    Pity you got modded as flamebait, I agree with you. The article states:

    But Russian rockets blast off in Kazakhstan, much higher on the globe than Florida. They cannot fly much lower than 51.6 degrees latitude without running the risk of dropping spent rocket stages or astronauts during an emergency re-entry on Mongolia or northern China. So the Clinton administration decided to erect the station at 51.6 degrees, hailing it as a "world orbit" accessible to all spacefaring nations.

    Let's not forget the Russians are the only ones with experience of making and running a spacestation, nor lets forget it is the Russians who are doing the bulk of the construction and running it (the article does go on to acknowledge this).

    The whole idea the present station could be a 'jumping off' point really is crazy - it has no command capacity, it is 100% dependent on supplies (fuel, parts, etc) taking supplies by shuttle or shortrange capsule and then loading them on something else is much more inefficient than sticking them on that something else and skipping the middle-man (this is only a conventional engine, not a warp drive!), it is extremely fragile. But it does allow applied research into space-based technology - a vital stepping stone in the international space effort.

  97. Corp funding? by Duhavid · · Score: 1

    Is it just me, or does that seem all wrong to you?

    A: What corps are going to be interested?

    B: The statement was made that this would free NASA from budget cuts. How do you figure? Companies cut projects, subcompanies, people all the time. Why would they be any more stable on this issue?

    C: The same companies that need govt oversight to respect human life and safety issues? ( Please dont tell me this is not an issue. Look at some history ( industrial revolution esp ) to see what "capital" will do to make a buck. ( And, no, humans have not changed that much in the interval between, see Enron, et al for some enlightenment ( no, no humans lost lives, due to the regulations against ) ) If you dont agree, then I would suggest you have been living with the guard rails so long you dont see them anymore. Consider moving to other parts of the world, and experience it for yourself ).

    D: Can you imagine the corporate intrigue? The politics? The govt funding and governance has it's problems, to be sure, but I cant see corp funding doing the trick.

    --
    emt 377 emt 4
  98. It was obvious before the Challenger by Chiron+Taltos · · Score: 1
    after the Challenger explosion it became obvious that we would never refuel a rocket with volatile fuel at a space station because the threat to the station would be so great.

    Oh? I thought that became obvious after this thought-proving documentary covered the same issue. It even tied in the Russians.

    --
    CT

    1. Re:It was obvious before the Challenger by Anonymous Coward · · Score: 0

      How about this one?

      http://www.imdb.com/title/tt0120647/

  99. Thats not a space station... by Anonymous Coward · · Score: 0

    ...thats a wayyyy overpriced friggin tin can.nasa(and whoever else) engineers should be ashamed of themselves for raping that much money out of society for such an underwhelming project.I will piss on your graves....count on it.

  100. Directly from the White House by C10H14N2 · · Score: 1
    "First, America will complete its work on the International Space Station by 2010, fulfilling our commitment to our 15 partner countries. The United States will launch a re-focused research effort on board the International Space Station to better understand and overcome the effects of human space flight on astronaut health, increasing the safety of future space missions."

    That "kind of pablum" comes directly from George Bush's own strategery.

    http://www.whitehouse.gov/news/releases/2004/01/20 040114-1.html

    1. Re:Directly from the White House by amightywind · · Score: 1
      The United States will launch a re-focused research effort on board the International Space Station

      You are obtuse if you don't read this as the end of the Space Station as the center piece of NASA's effort. How do you expect the administration to state this? They do not want to offend the affected constituencies unnecessarily. Instead of "re-focused" read "reduced"! It is a message to our 15 partners that after 2010 the gratuitous taxi service to IIS is over and they are on their own.

      --
      an ill wind that blows no good
    2. Re:Directly from the White House by C10H14N2 · · Score: 1

      I'm sure the Russians will be upset over that. They've geen going to space stations for thirty years without shuttles and routinely arrive at the current station sans shuttle.

      Again, Bah.

  101. Incorrect. by Thag · · Score: 1

    I'm sure the astronauts currently living on the station are quite thankful for this as the United States does not have another vehicle and they would all be dead if Russia could not reach them now that the shuttle has been grounded for a year.

    One of the requirements for ISS is that they have to have enough crew return vehicles on hand at all times to get all the people staying on the station back to earth.

    The crew currently on the station have a Soyuz capsule to return in.

    Jon Acheson

    --
    All opinions expressed herein are my own, and not those of my employers, who are appalled.
  102. It's Only Rocket Science... by DynaSoar · · Score: 1

    ...specifically orbital mechanics.

    "And did you know that to accomodate the Russians, the space station is in an orbit that makes it almost useless as a jumping off point to anywhere?"

    It's only inconvenient for a high burn, one shot thrust at an arbitrary point in time to an arbitrary target.

    Twice per orbit ISS is flying parallel to the ecliptic. A burn from that orbit at the appropriate time will send a craft out towards the planets' orbits. So maybe you have to wait until that trajectory lines up with the direction you want to go. You have to do the same from the ground. Any trajectory less than the orbital inclination can be had, with just a matter of timing.

    Throw in slingshot trajectories around the moon and the sun, and you can get anywhere. Maybe you have to time it carefully, and maybe it takes a little bit more fuel, but not as much as the "you can't get there from here" that article tries to imply.

    --
    "I may be synthetic, but I'm not stupid." -- Bishop 341-B
  103. That's interesting and asinine... by DrMorpheus · · Score: 1
    How do you reconcile the statements:
    All measurements were done in English (American, Imperial, whatever you want to call them) measurements.
    This means that there are not only redundant components of the ISS, but even redundant toolboxes -- metric and English.
    I suspect most aerospace companies have similar practices.

    With the statement:

    Give me private companies (Armadillo Aerospace, Burt Rutan's projects) any day. They're the ones who'll finally get us into space reliably.

    What, Boeing and Lockhead aren't private companies?

    What a load of shit.

    --
    Debunking the "59 Deceits"
    1. Re:That's interesting and asinine... by Mad+Alchemist · · Score: 1

      Fine. What I should have written is this:

      Give me companies that aren't reliant on the US government for their existence. As far as I'm concerned, Boeing and Lockheed would collapse under their own weight if they didn't get cushy government contracts on a regular basis. The government has even conceded as much, in the way they hand out contracts.

      And while I, an engineer, think metric is the way to go, my point was that when you're working with the rest of the world (as in the ISS, but which is *not* the case with Armadillo Aerospace and Scaled Composites as far as I know), it just makes sense to be consistent.

  104. But it's the rich nations that are the problem by DrMorpheus · · Score: 2, Insightful
    Each child born in a developed nation consumes up to thirty-three times more resources than does a child born in the third world.

    For example, that means that if the US currently has a population growth of 1% (from births only) the amount of resources this birth rate consumes is equivalent to a birth rate of 33% in the third world!

    There is no third world nation that has such a birth rate so the real issue is the developed nations drain on world resources rather than the population growth of third world nations.

    --
    Debunking the "59 Deceits"
  105. Huh? by promethean_spark · · Score: 1

    Refueling rockets at the ISS is crazy, but they happilly refuel the ISS itself with volatile propellants?

  106. Hybrid propulsion is the answer here by GPS+Pilot · · Score: 1

    Solid fuel and liquid, throttleable oxidizer. Restartable, too. Read all about it here.

    --
    That that is is that that that that is not is not.
  107. WRONG by GPS+Pilot · · Score: 1

    It was never intended to use the ISS as a starting point for planetary missions.

    You must be too young to remember: the original Reagan-era vision for the station was that "after 2000, the Space Station would evolve into a space harbour in low Earth orbit for lunar and planetary missions as well as commercial exploitation of space resources." The design included a hangar for on-orbit assembly of large interplanetary spacecraft. Here is one of the sources that will back me up on this.

    --
    That that is is that that that that is not is not.
  108. Bullshit alert! by GPS+Pilot · · Score: 2, Informative

    Previous NASA studies for Mars missions have seldom if ever used the Moon as a launching pad because that would take about twice as much energy as going from the Earth or an Earth outpost.

    Here we have a NYT reporter overstepping his limited technical knowledge and making stuff up again.

    The best place from which to embark on a Mars mission, in terms of lowest delta-V (i.e. least amount of fuel required), is a high earth orbit. Second best is from the moon's surface. The worst, by far, is from Earth's surface.

    For the NYT to say both earth and an earth-orbiting station are superior launch points to the moon is quite ignorant.

    IAAOA (I am an orbital analyst).

    --
    That that is is that that that that is not is not.
  109. Re:I thought we already refueled the shuttle from by TR0GD0RtheBURNiNAT0R · · Score: 1
    I'm sorry, what did you post? The words "Liv Tyler" made me forget :D

    --
    This is my sig. There are many like it, but this one is mine.
  110. I think you'll find that... by DrMorpheus · · Score: 1
    ...once Armadillo Aerospace and Scaled Composites reach the size of Lockheed or Boeing they'll have exactly the same types of problems

    It's the size of the organization and not because they're associated with the "evil government".

    That attitude is nothing more than superstition.

    --
    Debunking the "59 Deceits"
    1. Re:I think you'll find that... by uberhund2 · · Score: 1
      Mad Alchemist wrote:
      Give me private companies (Armadillo Aerospace, Burt Rutan's projects) any day. They're the ones who'll finally get us into space reliably.
      DRMorpheus wrote:
      once Armadillo Aerospace and Scaled Composites reach the size of Lockheed or Boeing they'll have exactly the same types of problems

      Nice end run around the point to throw out incendiary irrelevant fluff. Mod parent down as troll.

      Paraphrasing DRMorpheus:

      The companies may be different, but if they were the same, they would have the same problems!

      First, these small companies won't be the size of Boeing when they get us to space. Armadillo is going for the X Prize with, IIRC, a single Rocket Scientist.

      Second, there is a grave difference in focus between a government contractor ("Justify your spending so you can keep getting more money!") and a small, private engineering firm ("How cheaply, efficiently and effectively can we do it?")

      When George Bush Sr. asked NASA to come up with a plan to go to Mars, they said "Give us 30 years and $400 Billion." When Robert Zubrin's (founder of Mars Society) 12 man team put together what is now known as the Mars Direct plan, they came up with "10 years and $10 Billion". (Zubrin figures a private firm could do it for $6B.) NASA must have gone around and asked everyone how they thought their project could be justified by a Mars goal.

  111. So we lift an entire factory instead? by Anonymous Coward · · Score: 0

    Last time I checked the facilities for building the componets of the space station were several orders of magnitude larger than the space station itself. Furthermore, the material that is there is in a very raw form. How are you going to make fabrics or plastics in space? How about electronics, and sensitive intraments? There isn't very much dumb mass on the space station. Likewise, the number of people that worked on the components for the space station is several orders of magnitude higher than the astronauts that use it, and had veried skills and talents. How much is it going to cost to send these people into space? Where are they going to live? What are they going to eat? How many more years will it take to complete the project due to facilities in space being less productive and cumbersome. Lastly, there isn't a bunch of material floating around in space. How much money will it cost to gather rocks from hither and yon, rather than building them here on earth?

    The major cost of the space station was not getting it into orbit, but designing and manufacturing it. These costs will be greatly multiplied by having to do the work in space.

    1. Re:So we lift an entire factory instead? by drinkypoo · · Score: 1
      You don't build it all. You build the most massive components in space. Furthermore you don't have to build things to quite the same spec as the ISS. For example, it doesn't have to look like that. If you just hollow out an asteroid as I say, and then drill the appropriate holes in it and set airlocks in them, it's a much simpler process than building a metal can that can hold air. The ISS was limited by mass that could be launched into orbit. Therefore you still need to launch things that you can't trivially build in space - just about everything other than the hull, basically. Although, once you have an enclosed atmosphere and a place to work, you have much more potential for getting things done.

      The ISS requires (in total) somewhere between 30 and 50 launches to complete. Assuming it takes 40, 30 of which are shuttle launches, that's nearly $500M per launch (NASA says US$470M) you're spending over fourteen billion dollars on shuttle launches alone. I would assume the russian rockets are somewhat cheaper.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  112. So, A Challenge to all Slashdot Genius.... by firew0lfz · · Score: 1

    What would *YOU* do you save NASA if *YOU* were in charge?

    (Minus the fact that we need a cheaper way to get in space, since fuel is really the limiting factor?)

    It would seem to be that the ISS is nothing more than a dead end project, so here is what I would do: (don't know if it'd be that great of a deal, and would prolly never make it past congress, but hey, this is slashdot, and I'm allowed the right to dream...)

    * Get rid of ISS, or at least make it much smaller, and try and return the focus to research.
    * Build a station at one of the Lagrange Points (again, minus the whole fuel issue) for building ships in space (instead of the moon, where, as I understand it, the cost of launching rockets off of the moon is actually much more than just building units in zero gravity and firin' 'em up) and focus on using ion engines, with focus on Mars and such
    * Build a small moonbase with focus on an observartory, and maybe for some kind of mining use (maybe use it to haul raw materials to one of the stations in L point?)
    * MARS! MARS! MARS!
    * Focus again more on the tech, instead of the problems with beaucracy...

    Thats just my take on it; what would you guys do if you were in charge of NASA? (again, minus all the huge $$$ involved in maintaining such a tremendous fleet)

    --
    Try not to let life get in the way of living.
  113. "...to accomodate the Russians..." by Anonymous Coward · · Score: 0

    "And did you know that to accomodate the Russians..."

    Well that's an odd statement. You make it sound like the US is doing Russia a favor or something. Funny how it's easy to forget that Russia has had its own space station for a decade (!) before the International Space Station was put in space. Not even to speak about the fact that Russia was the first country to put a person in space and has contributed an enormous amount to math, physics and other research relevant to space. So saying "to accomodate Russians" is a bit insulting.

  114. NASA Dudes - what would it take to move the ISS ? by tqft · · Score: 1

    Seriously,

    it is up now (mostly). When NASA gets a new bird what about tugging it higher?

    What would it take?

    --
    The Singularity is closer than you think
    Quant
  115. Re:handing the *Russians* money by hplasm · · Score: 1

    Explain, if you can- oh, you're an AC, never mind..back to playing with your own excrement.

    --
    ...and he grinned, like a fox eating shit out of a wire brush.
  116. Did Bush talk to anyone? by GreatBallsOfFire · · Score: 1

    The idea that the moon is a better launching point than earth seems silly. Unless you can get the resources you need on the moon, you need to ship them from earth. If you can't get 100% efficiency out of every process you use to build your new ships, you'll need to ship more raw materials to the moon than you would have used on Earth. More raw materials = more weight.

    So, unless I missed something Bush handed everyone yet another pile of dung to get a lunar base going. I guess I shouldn't be surprised.

  117. Are you being aggressively stupid? by DrMorpheus · · Score: 1
    Or are you really that dense?

    Well I guess I'll have to spell it out for you because it seems your having some problems.

    The implied argument in the original post was that the "evil" government was corrupting Boeing and Lockheed with inefficiency and stupidity.

    It's the same old tired canard that gets trotted out whenever NASA gets discussed on Slashdot. The lame and unproven catechism that "market forces insure accountability and efficiency no matter what the size of the organization" that sophmoric libertarians like to recite.

    It's patently false as solid research has shown. But gee, I only teach graduate level classes in the sociology of organization and have spent a dozen years doing on site research in the subject so what would I know compared to some Slashdottie?

    Problems like the original grandpost cited are endemic to ALL large organizations, public (i.e., governmental) or private. Hence why I stated that once Armadillo becomes as large as Boeing they will have the same types of problems.

    As far as the rest of your argument is concerned, let me give you a ticket for the clue train kiddo, Armadilo hasn't launched a single vehicle let alone won the X-prize!.

    All they've done so far are tests on the rocket system's components. They HAVE NOT HAD A SINGLE INTEGRATION TEST yet. But Boeing, Lockheed and NASA have all had hundreds of successful flights BEYOND THE GOALS OF THE X-PRIZE.

    When Robert Zubrin puts humans on Mars and brings them home for $10 billion then I'll believe you.

    Otherwise your operating on nothing more than religious faith and blowing a lot of smoke.

    --
    Debunking the "59 Deceits"
    1. Re:Are you being aggressively stupid? by uberhund2 · · Score: 1

      My point is: it doesn't take an organization of that size to put someone into space. Whether Armadillo or someone else wins the X-Prize, the point of the prize is that you can put people in space relatively cheaply. And yes, for the moment even that remains opinion. (And yes, I was feeling a bit feisty when I wrote my last post.)