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Low-Cost Space Shuttle Replacement Proposed

FleaPlus writes "The Washington Times and Space.com has an article on a plan for a low-cost shuttle replacement by t/Space, an organization whose team includes AirLaunch LLC and Burt Rutan's Scaled Composites. Instead of a one-size-fits-all craft, t/Space's plan is to build an air-launched four-person capsule termed the Crew Transfer Vehicle (CXV), specialized for carrying people to and from low-Earth orbit. Once in orbit the CXV would dock with a separately-launched Crew Exploration Vehicle (likely built by Lockheed Martin or Northrop Grumman), which could be optimized for traveling between Earth orbit and the Moon. The CXV would also be able to dock with a space station or serve as a crew lifeboat. The group, which has already received some NASA funding, calculates that it can have the system ready by 2008 for $400 million, with a per-launch cost of $20 million (compared to ~$500 million per shuttle launch). Development would be done under a competitive fixed-price (instead of cost-plus) contract."

41 of 283 comments (clear)

  1. Shuttle Mod Editor by Anonymous Coward · · Score: 5, Funny

    I propose that Mr. Carmack Open Sources the plans to his giant bottle rocket and lets the end user create a deep space mod for it.

    1. Re:Shuttle Mod Editor by Rei · · Score: 3, Informative

      But using peroxide itself has been done time and time again. You don't see many peroxide rockets out there these days, do you? There's a reason for that, and it's not just because peroxide monoprops and even biprops have god-awful ISP. :)

      As to deep throttlable engines, most of Carmack's engines seem to have had serious problems with chugging when run at any measurable amount of thrust. I.e., he still hasn't had throttlable range. When he can make an engine that has even a mere 300 ISP that can reach its max power, have a significant amount of power for its mass, and *then* be throttled down, then he'll have something at least somewhat relevant.

      --
      I'm you from the future! We have to finish our time machine before the Angels of Destruction find the portal!
  2. Getting There, and Costs by Roland+Piguepaille · · Score: 5, Informative

    STS (the Space [Shuttle] Transportation System) is a flawed system design, with little compromise or tolerance for failures, systemic or political. On that issue alone, STS must be replaced.

    A much smaller Shuttle-like orbiter, which can be mated atop a Delta, Titan III or other medium-lift vehicle, is needed. It may look like the Crew Return Vehicle concept that's being rehashed into a shuttle replacement. I think it would have more merit to the old military DynaSoar [astronautix.com] project. Such a vehicle, unlike the Shuttle Orbiters we have, is not a truck...it would be a human taxi, with a small bay for some replacement consumables. For larger payloads and refurbs, use the old Orbiters--unmanned, remote controlled. If we can run robots from millions of miles away, we can surely do the same from low Earth orbit. In fact, the Russians showed it can be done with their own mortibund Shuttle--it's first and only flight was completely unmanned, from launch to landing. [astronautix.com] The old Orbiters would also double as rescue vehicles, along with having additional new Shuttle Taxis ready to go on other pads when a flight is in progress. We can't use single-use rockets for ISS refurbs since the pressurized cargo modules (like the special ones used by Orbiters during an ISS crew and experiment transition) has equipment that must come back. Only our Orbiters have the ability to return large equipment modules safely to Earth.

    We should be able to adapt single-use rockets to send new ISS components for assembly. The ISS will need more arms, and a new Orbiter replacement might need something like the current Canadian remote arm.

    The main thing I would recommend is (1) just make a reusable human taxi that (1) has an abort mode like the old Apollo spacecraft, where the new Orbiter can rocket away from the booster, as well as (2) a durable crew compartment that, in the case of normal reentry failure, could be separated from the larger body and land by parachute.

    Baby steps, please. A Shuttle replacement need not be all things as our current ones tried to be. For LEO, a simple crew vehicle will work. Later, the ISS or a moonbase should be used to create new, true spacecraft that ferry and from the Moon, and can use lunar material to build a Mars vehicle.

    When someone says that the cost to go to space is too expensive, I have to emphasize where the money goes to build the spacecraft. It's not like we take millions of dollar bills, smelt them into vehicles or stuff bills in the fuel tanks and set them afire. That money goes to WORKERS who build the space vehicles and COMPANIES that make jobs. That's economically a Good Thing.

    --
    To confirm you're not a script, please piss in my ear.
    1. Re:Getting There, and Costs by nietsch · · Score: 5, Informative
      This is a repost from a previous comment (bonus points for the link to it), if you go karma whoring, please be so kind to provide the correct link
      The X-20A Dyna-Soar (Dynamic Soarer) was a single-pilot manned reusable spaceplane, really the earliest American manned space project to result in development contracts. It evolved from the German Saenger-Bredt Silverbird intercontinental skip-glide rocket bomber[...]
      see more here

      here is more on the dynasoar:
      The X-20A Dyna-Soar (Dynamic Soarer) was a single-pilot manned reusable spaceplane, really the earliest American manned space project to result in development contracts. It evolved from the German Saenger-Bredt Silverbird intercontinental skip-glide rocket bomber
      see here


      and something about that Buran shuttle your rip mentions is here:
      The Russian Shuttle Buran ("Snowstorm" in Russian) was authorized in 1976 in response to the United States Space Shuttle program. Building of the shuttles began in 1980, with the first full-scale Aero-Buran rolling out in 1984. It was launched by Energia LV. read more here.


      As for the cost argument: yes it is true that if you contract all out in your own country, the nett cost for the state is lower than the expended amount. But those are still unproductive workers. If you have your doubts about a third world country doing space research, why use a different standard for first world countries. All those people (working on hyperexpensive spaceprojects) could also develop more and cleaner technologies that might avert the greenhouse runaway that the US seems to want so bad. (In that perspective it is completely logical that the US develops a new space shuttle at twice the cost).

      nuff said...
      --
      This space is intentionally staring blankly at you
    2. Re:Getting There, and Costs by PlacidPundit · · Score: 3, Insightful
      When someone says that the cost to go to space is too expensive, I have to emphasize where the money goes to build the spacecraft. It's not like we take millions of dollar bills, smelt them into vehicles or stuff bills in the fuel tanks and set them afire.

      Most likely, people who say this are arguing that the benefit is not worth the price.

      That money goes to WORKERS who build the space vehicles and COMPANIES that make jobs. That's economically a Good Thing.

      Er, yes. But the real argument is not about whether the money will be reinvested. It's a given that the money goes somewhere when the government spends it, just the same as it does when an individual spends it. The question is who will choose where these funds go. If the government decides, the money will almost certainly go to different places than if individuals decide separately. Then supply and demand kicks in and the number and type of goods and services available on the market begin to change.

  3. Hmm by Anonymous Coward · · Score: 4, Funny

    "The group calculates that it can have the system ready by 2008 for $400 million".

    Alright guys, this means we will have it around 2015 for about $750 million.

    1. Re:Hmm by pe1rxq · · Score: 3, Informative

      They are offering a fixed-price deal to NASA....

      --
      Secure messaging: http://quickmsg.vreeken.net/
    2. Re:Hmm by Jarnis · · Score: 5, Insightful

      Actually, considering what Scaled Composites has done so far, and the budget they've used, I have some belief that this might be doable. Of course it would not include funds for running a huge NASA paperpusher army, so it probably won't include costs of extensive certifications and testings to get the failure rate down to minimal. Space is risky business, and spending megabucks for additional 1-2% success rate is just a bad idea. Every astronaut can themselves consider the risks and decide if they are happy with the launch vehicle.

      Nobody was out there demanding stacks of paper and testing from the Wright brothers when they experimented. In retrospect their contraption was highly unstable and unsafe. Same should apply for launch system developments. Sure, stuff will blow up, and people will die. People who understood the risks and knew exactly what they were doing. If they run out of people who are willing to hop onboard, they know they must spend time and money on the safety. Today, I doubt they'll have many issues as long as the (test)pilots are involved in the process and know how the tincan they are hopping into ticks.

      No need to bog it all down with 100M$s of paperwork and extra safety tests and checks that really won't improve safety. The law of diminishing returns applies - sure, you want to test and make sure the damn thing works, but beyond certain point extra testing and checking is not going to change the safety much - only the pricetag will go up, see NASA :)

    3. Re:Hmm by acidrain · · Score: 5, Insightful
      Sure, stuff will blow up, and people will die.

      Cute. It isn't that we can't find people who will take the risks, it's our safety obsessive culture that cannot tolerate your suggestion. Sure the money would be far better spent on foreign aid, in terms of lives per dollar, but public sentiment isn't rational. And NASA depends on public sentiment for it's cash, not the delivery of a product.

      --
      -- http://thegirlorthecar.com funny dating game for guys
    4. Re:Hmm by Jarnis · · Score: 4, Insightful

      Which is why we need private enterprises taking the initiative.

      Business, hiring qualified test pilots to do stuff they are supposed to be doing. Everyone doing it can compare their paycheck to their job description and choose if the want to ride the experimental thingy.

      Yes, I can imagine congressional hearings and 'oversight' destroying the whole thing after a crew exits stage left in a fireball. That means US has a problem, and such business should relocate elsewhere...

      Odd that nobody seems to raise holy hell over dead military test pilots who have over the years died while testing military hardware. Nobody ever hears of them. People also seem to shrug off accidents during pilot training and military exercises. How is this any different from space exploration? It isn't. Space = risky business, where people can die. Live with it.

      I know I'd love to go up there like just about everyone else. I also know that today's hardware for doing so is somewhat unreliable and 'prototype' in many ways, so I'd currently choose not to take the ride. I could take a zero-g ride on a vomit comet (airplanes are petty mature), but betatesting a rocket is not my idea of a fun occupation. At the same time I'm quite sure you'd find immensely qualified takers for the job...

    5. Re:Hmm by Rei · · Score: 4, Insightful

      There are a lot of fallacies in this post. Lets go down the list:

      Actually, considering what Scaled Composites has done so far

      Scaled has done almost nothing in terms of sending a craft to orbit.

      Of course it would not include funds for running a huge NASA paperpusher army

      NASA's "paperpushing" regulations are largely due to the private companies trying to take advantage of them. Trust me, I used to work for one company that did - Rockwell-Collins. They had a Space Shuttle contract, and started charging all of their other projects that were low on budget to the shuttle contract, then simply claimed that the project was running overbudget. Eventually they were caught and smacked down with fines and regulatory penalties, but far down the line.

      The regulations are designed to make sure that the net result is A) what they asked for, B) safety corners haven't been cut, and C) . Can they be improved? You bet. Have they been improved already? You bet (as much as O'Keefe has done wrong, most will agree that he made NASA regulations a lot easier to deal with).

      Every astronaut can themselves consider the risks and decide if they are happy with the launch vehicle.

      I'll agree with that one.

      Nobody was out there demanding stacks of paper and testing from the Wright brothers when they experimented.

      Experimented on themselves. When they wanted to sell their airplane to the military, the military put it through the works.

      In retrospect their contraption was highly unstable and unsafe.

      Unstable? Yes. Unsafe? Hardly. Early airplanes flew so low and so slow that even when you crashed, it was rarely a fatal event. The first fatality wasn't until 1908, despite several hundred (yes, hundred) teams around the world building their own airplanes in that time, many with dubious methods. If I recall the number correctly, the first cross-country flight attempt in order to win a cup involved about three dozen crashes *by the same contender*, who each time patched his airplane up and took off again. Even with all of the advances in speed (and increases in flying altitude), and with far more rugged terrain, of the dozen crashes in the first attempt to fly around the world in 1924, none were fatal. The first fatal commercial flight wasn't until two planes in (late 1920s, early 1930s? Don't recall the exact date) collided over the English Channel. I could keep going, but I think you get the picture. Early amateur airplanes were nothing like amateur rockets - their failure modes were far, far more gentle.

      No need to bog it all down with 100M$s of paperwork and extra safety tests and checks that really won't improve safety.

      You better believe that all of those "extra safety tests" increase safety. Take a look at the history of any rocket development program's tests. Often, you won't find burnthrough fuel/oxidizer leak, or other potentially fatal complication until you've mounted everything on the launch pad to each other and are doing your 20th or so static firing of the engines.

      The law of diminishing returns applies - sure, you want to test and make sure the damn thing works, but beyond certain point extra testing and checking is not going to change the safety much

      Quite true. But look at all of the public outcry (and even outcry on Slashdot) when a manned spacecraft fails. They have reasons other than pure logic to take into account: public reaction. If t-space wants to step into the public limelight as such, they better be prepared to take that on as well.

      --
      I'm you from the future! We have to finish our time machine before the Angels of Destruction find the portal!
    6. Re:Hmm by Rei · · Score: 3, Interesting

      The problem is, this bid isn't cheap. 20 million dollars per launch, 4-6 people, no cargo (their proposal is to have all cargo launched on unmanned systems) seems to imply a cargo capacity of around 1200 kg at 16,700$/kg. These are Space Shuttle prices. And for such a small craft, 400 million dollars development cost is quite extreme.

      They're using an outmodded reentry design (the bell-shaped reentry design wasn't chosen by the US, Russia, and China for no particular reason - they did extensive testing, and it proved to be the most efficient, most reliable shape), and they plan to make reusable capsules out of it when capsules have seldom proven realistic to refurbish for a second flight in the past. Furthermore, they plan to do this on their very first space attempt. Quite doubtful, to be honest.

      High recurrant prices, companies with no background in orbital launch and only a background in unscalable suborbital (i.e., "high risk", and an implication of higher costs than predicted), questionable reusability (which generally implies higher costs than predicted), and high capital costs. I would be quite surprised if NASA ends up accepting this.

      And before people start up the Rutan hero-worship ("he can do anything!"), Rutan did almost nothing compared to real spaceflight. He built an aircraft around an unscalable purchased rocket engine and a nitrous tank. He made it out of the same sort of materials that he builds all of his aircraft out of (which aren't even close to what you need for reentry, the biggest spaceflight difficulty, and where most of the actual engineering problems lie), and his purchased low-ISP high-tank mass engine isn't going anywhere close to orbit, no matter how it gets tweaked.

      The only really major accomplishment that he did was to create the world's first fully-private supersonic aircraft, without supersonic windtunnel testing - an impressive feat, mind you, and one that is quite a testament to the power of modern CFD software. Also, stably dropping a powered craft from another isn't a typical engineering problem for a private builder to address, and while they had stability problems on engine start, they did pull it off successfully.

      --
      I'm you from the future! We have to finish our time machine before the Angels of Destruction find the portal!
  4. Hmmm by Anonymous Coward · · Score: 4, Informative

    Haven't all the low-cost shuttle replacements so far, once they started trying to build them, turned into high-cost engineering boondoggles that were never finished?

    Come to think of it, wasn't the Space Shuttle itself a low-cost replacement for what came before that, once they started to build them, turned into high-cost engineering boondoggles that were never totally finished?

    I mean... just checking.

    1. Re:Hmmm by CaymanIslandCarpedie · · Score: 3, Insightful

      Very true and there isn't much Burt Rutan can do about this. The problem is one congressman will hold back support until there is money added to the project to buy "outer space safe" band-aids with special adhesive (for some reason) which of course only someone in his distract can make for about $10,000 per band-aid. Then another will hold back support until money is added to have all instruction manually "speically" printed by someone is his district which of course will cost $1,000 per page.

      This will go on-and-on until everyone has a little piece. By time time its done it'll be a few billion for development and of course all these "special" items will need to be replaced for each launch so it'll be back to hundreds of millions for each launch as well.

      Based on Scaled Composites history, I have full confidence they could do the job well. However, I have no doubt "pork politics" will drive up the price drastically. Of course, that assumes the congressmen with Boeing, Northrup Grumman, etc in thier districts would ever allow this to go forward which I wouldn't call a given.

      --
      "reality has a well-known liberal bias" - Steven Colbert
  5. Why not? by mmc · · Score: 5, Insightful

    Why not just give them US$400M? Northrup and the others will spend that kind of money just thinking about it all - then at least they'll have two options at the end of it!

    1. Re:Why not? by ceeam · · Score: 3, Funny

      Uhm, I have this wonderful idea here that needs only $20m(!) to complete. I cannot tell you any more details now (so that others don't steal it, you know), but if you send me this much money now, I promise that in the middle of 2008 we'll rule the world. PS: don't tell anything anyone, just send in the money.

  6. Can someone explain to me... by Vellmont · · Score: 3, Insightful

    Why it costs $500 million dollars just to put a frickin "re-usable" space-bus into orbit? Is it mostly a lot of variable costs that have to be paid every time we put a shuttle up, or are there just mostly fixed costs, then divide by shuttle missions per year?

    --
    AccountKiller
    1. Re:Can someone explain to me... by Vo0k · · Score: 5, Informative

      The shuttle itself, being reusable, weights so much that putting it in orbit costs a fortune. Normally, in case of rockets like Soyuz, maybe 1% of the original mass is put in the orbit, a tiny, light reentry device, maybe some payload. In case of the shuttle we need to lift a huge, ultra-heavy vehicle into orbit, it requires vastly more fuel. The hydrogen fuel tank is not reusable. Reworking the first-degree rockets is expensive. Because of added mass, extra material properties must be taken into consideration. It's cheaper to send 5 missions, 5-ton each, than one 25-ton one, but you can't take the shuttle apart and launch it in pieces. What originally was thought to be cheaper, seems to be a failed idea.

      --
      Anagram("United States of America") == "Dine out, taste a Mac, fries"
    2. Re:Can someone explain to me... by FleaPlus · · Score: 3, Informative

      If I understand correctly, it's mostly fixed costs, particularly the costs of paying the salaries of the standing army of ~20,000 employees. They're needed to maintain, n-tuple check, and fill out the paperwork for shuttle tiles, volatile fuels, and so on.

    3. Re:Can someone explain to me... by Vellmont · · Score: 3, Informative
      I did a little checking of my own, and if you can believe the Australians at: http://www.kids.net.au/encyclopedia-wiki/sp/Space_ Shuttle The costs are all in the re-inspection and certification of the shuttle. This makes a lot more sense to me since the fuel costs certainly can't be all that much. It's a great boondoggle for Florida though.


      When originally conceived the shuttle was to operate similar to an airliner. After landing the Orbiter would be checked out and start "mating" to the rest of the system (the ET and SRBs) and be ready for launch in as little as two weeks. Instead this sort of turnaround in fact takes (typically) months. This is due, in turn, to the continued "upgrading" of the inspection process as a result of the Challenger explosion. Even simple tasks now require unbelievable amounts of paperwork.

      The result is a massively inflated manpower bill. There are 25,000 workers in shuttle operations (perhaps an older number), so simply multiply any figure that you choose for an average annual salary, divide by six (...launches per year), and there you have it.
      --
      AccountKiller
  7. Separation by roalt · · Score: 3, Interesting
    Instead of a one-size-fits-all craft, t/Space's plan is to build an air-launched four-person capsule termed the Crew Transfer Vehicle (CXV), specialized for carrying people to and from low-Earth orbit. Once in orbit the CXV would dock with a separately-launched Crew Exploration Vehicle

    ALL STATIONS: Prepare for saucer separation sequence!

    According to star trek producers, this sequence was so expensive in special-effects, that it was hardly performed during the seven seasons of Star Trek: The Next generation... Funny that in real-life it might be cheaper...

  8. Cost by ArbiterOne · · Score: 5, Insightful

    400 million? It costs 2 billion (taxpayer) dollars to build ONE stealth bomber. One.
    This is cheap.
    If we can get back into space for 400 million, call it a bargain and GO!

    1. Re:Cost by Vo0k · · Score: 4, Funny

      If we can get back into space for 400 million, call it a bargain, secretly poison 90% of the military decision makers and GO!
      Otherwise, they will say "Going into space? What a waste of money! That's almost 1/5 of a stealth bomber! No way!"

      --
      Anagram("United States of America") == "Dine out, taste a Mac, fries"
    2. Re:Cost by FleaPlus · · Score: 4, Informative

      do you have a refrence, or did you pull that out of your mother's peed-in-vagina?

      Assuming you're referring to the stealth bomber:

      http://en.wikipedia.org/wiki/B-2_Spirit

      The B-2 is the most expensive plane built to date, costing approximately $2.2 billion USD per plane. [1] (http://www.fas.org/man/gao/gao94217.htm) Some writers have suggested that the huge program cost may actually include costs for other black projects that remain classified. The high per-unit cost may also be partially explained by the small number of planes produced coupled with a large research overhead in the B-2 program (see below).

  9. Space Exploration by zoloback · · Score: 5, Interesting

    Space exploration suffers from the lack of investment coming from major industries worldwide.
    The times when a whole country like the US started a program to put a man on the moon are long since past, now, it's up to the corporations to take over, but they have nothing to gain from this except for the publicity and the somewhat useless benefits of zero-gravity research (don't get me wrong, i think z-g research is important, but the benefits are seldom).
    What would happen if there was a legislation that allowed a company to claim a part of another planet, provided that (1) they can get there first and (2), they actively use it for a purpose (like mining, among many others). Such legislation would surely have to have many different conditions and establish a common ground for all corporations in the world, and i cannot see the entire universe of implications, but i can't stop thinking that this would push space exploration projects and would put us on other planets.
    Now, whether we should be destroying other planets aside from "ours", that's an entirely different matter...

    --
    The future will take care of itself.. It has in the past
  10. Good Old Boys by StratoChief66 · · Score: 4, Insightful

    What about when the backers are brought before Dubya and he asks them how much of the 400 million initial and 20 million per launch goes to helping the good old boys and the backers look at each other and groan? I've never been accused of having much faith in the US administration but I just figure the men in charge of our dear sweet US of A will just say thank you for the fine offer but we've already got a team on the problem. I've never seem the government interest peaked by cost savings unless that savings goes to their friends/screws the general public or both of the above.

    --
    Frylock: "We should have cloned twenties, Jackson wouldn't have given a fuck."
  11. The future by promantek · · Score: 5, Funny

    Trinity: what do you need?

    Neo: estes rockets. lots of estes rockets. and big rubber bands.

    Trinity: nobody has ever tried anything like this before.

    Neo: that's why it's going to work.

  12. Cheap space travel... by The+Jabberwock · · Score: 5, Funny

    ...was mastered long ago by the Chinese official, Wan Hu. He clearly has prior art.

  13. Use for space tourism? by FleaPlus · · Score: 3, Interesting

    This might be a silly question, but if they do get the NASA contract and develop a 4-person capsule with a per-launch cost of $20 million, would they be allowed to also use the same capsule design for commercial uses, like space tourism? We've already seen a number of people eager to shell out $20 million for an orbital flight, so I can imagine that the number eager to spend $5 million for the same flight would be much higher.

    Hmm... I wonder if this would be able to dock with a Bigelow inflatable habitat.

  14. Russia's Kliper makes this project meaningless by Anonymous Coward · · Score: 4, Interesting

    The russian Clipper (Kliper) lifting body space capsule is already being built. There is no need for the yankee to reinvent the wheel.

    http://www.russianspaceweb.com/kliper.html

    By the way, air launch is one of the most dangerous methods. In-flight collision is invariably fatal. Remember the drone that killed the SR-71 motherplane? The idea is silly.

    1. Re:Russia's Kliper makes this project meaningless by Vo0k · · Score: 3, Insightful

      If the separation procedure is safe enough (e.g. the shuttle is detached - dropped from the bottom of the plane and falls at least 100m before launching its own engine), it may be one of the safer methods. If the top of the carrier plane is used as a launch pad, that's a different matter. I haven't heard of a bomber plane destroyed by colliding with its own bomb midair.

      --
      Anagram("United States of America") == "Dine out, taste a Mac, fries"
    2. Re:Russia's Kliper makes this project meaningless by SupaMegaBuffalo · · Score: 3, Insightful

      Is the US supposed to rely on Russia for getting into space now?

      News flash: It already does for manned space flights.

  15. What I wonder... by Vo0k · · Score: 3, Interesting

    ...is, whether NASA will retain exclusive rights to the vehicle.
    $400mln to develop, probably below $100mln to build next, once first one has been built, ground infrastructure of some $50mln required... I guess there would be quite a few companies willing to invest some $200mln to provide orbital tours, maybe later build "orbital hotel" etc. The investment would probably pay back in 20 or so flights, maybe a year...

    --
    Anagram("United States of America") == "Dine out, taste a Mac, fries"
  16. WRONG!!! by alizard · · Score: 3, Insightful

    Unless you know of an environmentally cleaner way to get enough power to put "clean coal" out of business than a solar power satellite network.

  17. Low-Cost by Cow+Jones · · Score: 3, Funny


    I keep reading Lost-Cow Space Shuttle Replacement
    ... must wake up ... need coffee ...

    --

    Ah, arrogance and stupidity, all in the same package. How efficient of you. -- Londo Mollari
  18. Whoa . . . by Selanit · · Score: 3, Funny

    For a moment I read that story title as "Lost Cow Space Shuttle Replacement Proposed." And I was like -- wait, when did we build a cow spaceship? Was it built from cows or for cows? How'd we lose it? Is there now a cow family wandering the vast black reaches of the galaxy looking for a way home, with a cow-robot that keeps saying "Danger, Bessy Cowbinson, Danger!" . . . ? o.O

  19. Getting back to basics... by vrmlguy · · Score: 3, Insightful
    Finally, an idea that makes sense. The shuttle has failed because it serves too many masters. The Soviets had big budget constraints (at least compared to NASA), so they designed their spacecraft sensibly. Allow me to quote from http://www.astronautix.com/articles/wastolen.htm:
    The Russian Soyuz spacecraft has been the longest-lived, most adaptable, and most successful manned spacecraft design. In production for over thirty years, more than 220 have been built and flown on a wide range of missions. The design will remain in use with the international space station well into the next century.
    So, how should a man-rated system be designed? Let's see:
    Put all systems and space not necessary for re-entry and recovery outside of the re-entry vehicle, into a separate jettisonable 'mission module', joined to the re-entry vehicle by a hatch. Every gram saved in this way saves two or more grams in overall spacecraft mass - for it does not need to be protected by heat shields, supported by parachutes, or braked on landing.
    Obviously, using seperate man-rated and non-man-rated launchers for the service and mission modules can save even more money. But what should the spacecraft look like:
    Use a re-entry vehicle of the highest possible volumetric efficiency (internal volume divided by hull area). Theoretically this would be a sphere. But re-entry from lunar distances required that the capsule be able to bank a little, to generate lift and 'fly' a bit. This was needed to reduce the G forces on the crew to tolerable levels. Such a manoeuvre is impossible with a spherical capsule. After considerable study, the optimum shape was found to be the Soyuz 'headlight' shape - a hemispherical forward area joined by a barely angled cone (7 degrees) to a classic spherical section heat shield.
    OK, so the Soyuz was designed for use with lunar missions. But is the overall design usable for other missions?
    By changing the fuel load in the service module, and the type of equipment in the mission module, a wide variety of missions could be performed. The superiority of this approach is clear to see: the Soyuz remains in use 30 years later, while the Apollo was quickly abandoned.
    --
    Nothing for 6-digit uids?
  20. Flying the MoonBus by rben · · Score: 3, Interesting

    I think the sensible way to travel between the Earth and the Moon is to set up a space station, we'll call it the MoonBus, that flies a figure-eight orbit between the Earth and Moon. (It could use ion-engines and solar panels to keep it on the unstable orbit.)

    By building a stable platform in the Earth-Moon orbit, we could provide safe and comfortable transportation. Once the station is in place, it would require only a minimal amount of fuel to get people to the station and from the station to the Moon. Over time, we could continue to add to the station itself, building our capabilities.

    I got this idea from a book that Buzz Aldrin published a number of years ago. In his book, he proposed a somewhat similar scheme for moving people between Earth and Mars. Once the fixed assets are in place, the cost for moving additional people goes way down.

    The main point is that we need to be building our capabilities for doing things in space, not reducing them. We need to establish goals that help us develop a space industry that might help reignite our economy. We shouldn't be giving over the exploration of space to the Chinese or anyone else.

    Since we face some unknown risk of extinction from asteroids, perhaps we should have a set of prizes designed to develop an ability to move asteroids. Why not set up prizes for things like building structures in space? For establishing a mining base for water on the Moon? For creating a simple habitat that makes a figure-eight path around the Earth and Moon?

    --

    -All that is gold does not glitter - Tolkien
    www.ra

  21. Not a shuttle replacement by amightywind · · Score: 3, Informative

    The submitter should RTFA. tSpace is not proposing a shuttle replacement. They have apparently ceeded that to Boeing or Lockmart. They are proposing a lunar transfer vehicle. They are trying to get in on the CEV bidding without going through the formal review process. These earth LEO rendezvous achitectures are dumb. It is all because bidders seem to believe that the only booster vehicles are EELV's (Delta 4, Atlas V), which are too small for the job. This is foolish. A shuttle derived unmanned launcher could be easily developed from existing hardware and deliver 250,000 lbs to LEO. The manned CEV might then launch on an EELV.

    --
    an ill wind that blows no good
  22. Spending money on space is a *BAD* idea by Anonymous Coward · · Score: 3, Funny

    I read that we are spending $1B USD PER DAY to keep a military presence in Iraq.

    If we start buying this kind of crap, we may have to pull out of Iraq a day early. Then where would we be?

  23. More money for contractors who will never deliver by elrous0 · · Score: 3, Insightful
    Wow, hard to believe NASA is once again throwing a bunch of cash at contractors who will never deliver on the promised product. It would be even harder to believe if they hadn't spent the last 30 years doing it over and over again.

    NASA Engineer: Hey do you think we should do something original this decade?
    NASA Boss: Well, we haven't done anything original since the Viking Lander. Why spoil a good thing?
    NASA Engineer: Good point. Doing something new might require actual work.
    NASA Boss: Yeah. Hey, let's throw some money at Lockeed, Boeing, or Northrop. They'll give us cool animations and huge promises
    NASA Engineer: Will they actually deliver the product?
    NASA Boss: No, but the public will have forgotten about all our original promises long before realizing they never delivered. And we'll have a whole new batch of cool animations and promises to distract them by then.
    NASA Engineer: Sounds like a plan. I'm going to go take a nap. Wake me up when our funding is renewed
    NASA Boss: You got it!

    -Eric

    --
    SJW: Someone who has run out of real oppression, and has to fake it.