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NASA Pitches Heavy Lift Vehicle To Congress

BJ_Covert_Action writes "Well, Congress demanded, last year, that NASA develop a budget plan and proposal for a new heavy lift vehicle in light of the Ares V cancellation. Recently, NASA gave Congress just what they wanted. On January 11th, Douglas Cooke pitched an interim report to Congressional members detailing the basic design concepts that would go into a new heavy lift vehicle. Congress required that the new heavy lift vehicle maximize the reuse of space shuttle components as part of its budget battle with President Obama last year. As a result, NASA basically copy-pasted the Ares V design into a new report and pitched it to Congress on the 11th. The proposed vehicle will require the five segment SRB's that were proposed for the Ares V rocket. It will utilize the SSME's for it's main liquid stage. It will reuse the shuttle external tank as the primary core for the liquid booster (the same tank design that is currently giving the Discovery shuttle launch so many problems). And it will utilize the new J-2X engine that NASA has been developing for the Ares V project as an upper stage. In other words, NASA proposed to Congress exactly what Congress asked for."

53 of 275 comments (clear)

  1. Let's get this straight by MrEricSir · · Score: 4, Insightful

    * Congress demands new Moon program
    * Nasa dusts off old plans, calls it Ares V
    * Congress cancels Ares program
    * Congress asks for new heavy lift vehicle
    * Nasa hands them the plans for Ares 5

    Man, talk about recycling...

    --
    There's no -1 for "I don't get it."
    1. Re:Let's get this straight by Confusador · · Score: 5, Informative

      Really, it was expected that they would use the Ares V. The Augustine report had good things to say about it, their problem was with the Ares I. Killing Constellation was really about ditching that as no longer required so they could get serious about the V and the actual deep space equipment (whether it is for the moon, an asteroid, whatever). The problem that I see is that the mandate that they reuse as many shuttle components as possible means that they made some significant changes to the Ares V before giving it back to congress, namely reusing the SSMEs instead of RS-68. The SSMEs are amazingly efficient, but also amazingly expensive, so they don't fit on an expendable segment. Fortunately, they seem to have left themselves an opening to renegotiate that later, FTFProposal:

      “This design would allow NASA to use existing Shuttle main engine and booster component assets in the near term, with the opportunity for upgrades and/or competition downstream for eventual upgrades in designs needed for production of engines after flying out the current inventory of main engines and booster components"

      As always, though, this project is set up to fail.

      “However, to be clear, neither Reference Vehicle Design currently fits the projected budget profiles nor schedule goals outlined in the Authorization Act,”

    2. Re:Let's get this straight by Nyeerrmm · · Score: 4, Insightful

      Because Ares V is not the best design, but the best design that fulfills the requirements of using the existing workforce, SRBs, SSMEs, etc.

      This is basically ESMD's way of passing the buck back to congress and saying they can do one of two things:
      1. Build an HLV that keeps jobs in all the nice districts... OR
      2. Do it on time and on budget.

      In other words, congress' requirements are impossible to fulfill, and ESMD is saying it as politely as possible.

    3. Re:Let's get this straight by JamesP · · Score: 2

      Question

      Wasn't DIRECT that maximized the usage of STS and Ares was a clean sheet design (and that's why it was late, overbudget, etc, etc)?

      --
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    4. Re:Let's get this straight by dkleinsc · · Score: 2

      That sounds really smart to me. The Nasa managers can be reasonably certain that the Congresscritters won't notice it's the same damn plan over and over, and won't have to start at square 1 each time a new set of politicians come in.

      The usual problem with Nasa projects is that Nasa projects take longer than a typical politician's term of office. It would be sort of like working in a company where the Big Cheese changed every 2 years, and each one wanted a completely different product produced in a completely different part of the world.

      --
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    5. Re:Let's get this straight by afidel · · Score: 4, Informative

      Except it won't use the SSME, they are WAY too expensive for throw aways. The RS-68 with 80% fewer parts makes WAY more sense. The line item cost of the RS-68 is $13M vs $50M for the SSME and the production line for the RS-68 is still open and all suppliers are still current.

      --
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    6. Re:Let's get this straight by Opportunist · · Score: 4, Insightful

      Politicians telling Scientists how to do science, what could possibly go wrong.

      You would have thought they'd learn from Vietnam when they told the military how to wage a war...

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    7. Re:Let's get this straight by DarkOx · · Score: 3, Insightful

      Wow for the first time it might actually be a good thing for the country that congress never reads anything they vote on, never thought I'd see the day.

      In case anyone is wondering I was be sarcastic, the degree to which most our legislators allow themselves to be uninformed as to the content of the acts they vote on is shameful and terrible for our democracy in general.

      --
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    8. Re:Let's get this straight by MadUndergrad · · Score: 2

      Correction: Bankers tell politicians how to tell bankers how to bank, and bankers tell politicians how to tell car makers how to run car companies.

      And we're not the ones they're saying should tone down the rhetoric - they're saying the politicians should tone down the rhetoric.

    9. Re:Let's get this straight by Thinine · · Score: 2

      Working with Boeing on a Delta 5 (call a special version for NASA the Ares 5 if you want, but I always thought Ares would be a better name for the program to land humans on Mars) sounds like a better idea anyway. That way we inherit as much of the commercial tech as possible, especially the RS-68. A new core with five 68s (could use the ET for that, but we probably want a redesign for structural support to handle upper stages) and the Delta 4 segments as boosters would be much more reliable than the SSME + SRB. The J2-X may be usable, but I'm not sure if a second stage wouldn't be better served by using another RS-68. Plus an all LOX+LH2 launcher would be much more environmentally friendly. The SRBs are dirty fuckers. Oh, and the external boosters could be upgraded to reusable flyback boosters in the future, if such a thing is actually worthwhile.

    10. Re:Let's get this straight by Peach+Rings · · Score: 2, Interesting

      It doesn't matter if science doesn't return a profit. The Hubble telescope is an unqualified success despite its crushing cost and zero monetary return because gazing at the stars and explaining the universe around us is a human development goal that supersedes petty priorities like a transient economic recession.

      Of course, there are starving mouths to feed around the world and other fundamental issues to address, not that the money is going there either..

    11. Re:Let's get this straight by afidel · · Score: 2

      RS-68B has the cooling and is estimated at $18-20M per. Since it's useful for NASA, the air force, and commercial payloads the development cost is spread over the most possible launches.

      --
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    12. Re:Let's get this straight by afidel · · Score: 2

      I thought the idea was you throw the people up with Falcon 9 and the big payload with Ares V, why does the heavy lifter need to be man rated?

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
    13. Re:Let's get this straight by ravenspear · · Score: 2

      No, this is not Ares V. Ares V was part of constellation which had an alternate manned launcher (Ares I). This is SLS, it will be a manned and cargo launcher.

    14. Re:Let's get this straight by enrevanche · · Score: 2

      What a pile of nonsense, the CIA, the military and the executive continuously lied to congress about the state of the war. Any limitations placed on action in Vietnam were done to keep the Chinese out of the war, the military had already learned that mistake in North Korea. The fact is, had they been honest about the cost of the war, they would not have been allowed to start it in the first place.

    15. Re:Let's get this straight by plover · · Score: 4, Insightful

      No, what Congress should be saying is "we need a vehicle that can place an 11,000 kg load in a 25,000 km orbit, it has to fly by 2015, we need 5 flights per year for the next ten years, ten of those flights will be manned missions to the ISS, and you have a budget of $6.5 billion." They can optionally say "and only build it in the USA", because the US economy is also in their jurisdiction.

      Let NASA worry about reuse, booster tech, the number of stages, or if it's named Ares.

      --
      John
    16. Re:Let's get this straight by Unkyjar · · Score: 2

      Don't see why consolidating the location of fabrication and launch pad is anything but commonsense, regardless of secondary political motivations.

    17. Re:Let's get this straight by Teancum · · Score: 2

      The politicians aren't telling the rocket engineers how to engineer the next ship. They're producing a set of basic guiding principles for the design process so that they get a design that meets their requirements and does so with a minimum of cost overruns (maybe). It's more like management telling software engineers that they need to pay attention to security or spend this release cycle focusing on performance. They aren't telling software engineers how to write specific lines of code (and shouldn't, because they aren't programmers), but rather they are giving the software engineers an overarching plan that their code needs to fit into.

      I wish it was how you described everything. Unfortunately Congress is telling them to use certain suppliers, that certain engine parts, explicitly specified in the law, must be used and even going into some depth about how the rocket should be put together.

      What is really happening here is that the companies who are trying to build this rocket are trying to help write the RFP in such a way that only one company could possibly qualify for the contract. Unfortunately for the usual "old space" companies (Boeing, Lock-Mart, ATK) they now have a whole bunch of competition from a bunch or relative new companies who are just as capable of putting something into orbit as these more traditional rocket builders. Companies like Orbital Science and SpaceX can meet almost any general sort of guideline set up for a contract, and are offering to sell the rockets on a cash & carry basis rather than a research cost-plus contract too.

      As a result, the only way that these companies can be assured of getting the contract is to have Congress do the actual engineering. Well, it isn't them but rather the companies who have cozy lobbyist relationships with the congressmen involved, but the net effect is that the full design layout is being put into law in an attempt to lock out the competition. And as a result it is getting to the absurd point that in effect you have Congress literally "engineering" the rocket via law rather than simply giving the broad guidelines for how it is to be built and letting the engineers do what they know how to do: make things.

      It is political corruption at its most blatant, but then again that has been business as usual for many decades. The unfortunate thing is that it has to be so raw as to be smacking the heads of everybody involved in terms of what is going on now.

    18. Re:Let's get this straight by Teancum · · Score: 3, Insightful

      Let's be very clear, this is to make sure that Senator Orrin Hatch can bring the bacon home to Utah. His last campaign was pretty much "vote for me! Bringing the bacon home to Utah since 1976!" He is also in campaign mode because he is going up for re-election in 2012 and already has some people in his own party nipping on his heels to kick him out if he makes a big mistake (to the Utah voters).

      Senator Shelby of Alabama is another of the usual suspects, as are a few others in various places. It isn't a mistake that the Johnson Space Center got the name of the most famous fairy-god senator for the space program: Lyndon B. Johnson.

      I guess it all ends up being about bread and circuses... the final downfall of any democracy.

    19. Re:Let's get this straight by hitmark · · Score: 2

      Well there is always the chance that some sensor data from there will make a physicist go "huh, that goes against existing theories" and suddenly we have all kinds of new understanding of physical events that provides a tangible benefit to everyone (or a new terror weapon, like the nukes that came out of certain atomic energy calculations).

      We have all kinds of things around us now because someone had the time and know how to sit down and study something in nature in detail. Hell, medical science basically came about by giving religion the middle finger when it came to carving up dead people.

      The laser was first thought of as a neat trick of applied physics (as in, the equations hinted at the possibility so it got built to test the equations validity), but it resulted in a telecom and computing boom once someone fired it down a glass wire.

      --
      comment first, facts later. http://chem.tufts.edu/AnswersInScience/RelativityofWrong.htm
  2. Politician Engineer by Mechagodzilla · · Score: 4, Insightful

    Letting Congress pick rocket components is equivalent to me (colorblind) pick out the paint scheme for my house. Both will end in amazing disasters...

    --
    Fast, cheap, correct. You get to pick two.
  3. A Bit Left Off by BJ_Covert_Action · · Score: 5, Interesting

    The editors took the second paragraph of my summary out. They probably thought it was a bit too tasteless, or something, despite the important information in it. Here it is (also from the article linked):

    The catch is, NASA also admitted that they will not be able to complete the proposed rocket on the budget that Congress has given them. Neither will they be able to finish the rocket on time. Finally, NASA has commented that a current study being conducted by 13 independent contractors is still being conducted to determine if there is a better design out there that NASA has, 'overlooked.' NASA has stated that, should that study finds any alternate, interesting designs then, they will need to consider those seriously."

    1. Re:A Bit Left Off by h4rr4r · · Score: 2

      Here is a interesting design they did not consider; Don't use the fucking SRBs, they suck.

    2. Re:A Bit Left Off by BJ_Covert_Action · · Score: 5, Interesting

      Well actually, they very well may have considered it. Or, at least, NASA may have. Congress tends to be the entity demanding that the same SRB's get used on the new vehicle that were on the shuttle system. You can thank Senator Orrin Hatch and Senator Richard Shelby for this, in part, because they are defending the industries that provide jobs to the areas they represent. As a result, they both push heavily to have certain technical requirements inserted, via budget line items, into legislation regarding NASA's designs.

      In a recent copy of Make magazine Dick Rutan, Burt Rutan's test pilot brother, was quoted saying, "In America, the Apollo program was the greatest thing we ever did. A young president wrote a check and got the fuck out of the way..." I think that sums up nicely the role that politicians should play in engineering. But then, I'm old fashioned like that.

      There is quite an argument to be made that this whole thing is a political ploy by NASA to either force Congress to pay for what they are asking for, or to loosen up on the stupid ass requirements an allow NASA to design a truly optimal solution. Whether or not the ploy will work, backfire, or do nothing will be seen with time I suppose.

    3. Re:A Bit Left Off by yincrash · · Score: 3, Informative

      Can someone explain the disadvantages of SRBs? Is it just that they are more explosive?

    4. Re:A Bit Left Off by MiniMike · · Score: 2

      using thin 6-inch strips of aluminum.

      Oh, is aluminum foil also made in the same congressional district as the SRB's?

    5. Re:A Bit Left Off by Jherico · · Score: 4, Informative

      Well, for one thing, SRB's don't have an off switch or a throttle. Once ignited your only options are 'let it burn until it runs out of fuel' and 'detonate the entire rocket at once (which is what happened when the SRB's on the Challenger went out of control after the launch stack fell apart).
      The Shuttle SRB's in particular are built in segments which are connected by O-Rings, and that design vulnerability is part of the cause of the Challenger disaster, although this particular failing is less about SRB's in general than political ass-hattery.

      --

      Jherico

      What can the average user can do to ensure his security? "Nothing, you're screwed"

    6. Re:A Bit Left Off by jandrese · · Score: 2

      Two things:

      1. They're less efficient than liquid rockets.
      2. There is no "off" switch.

      --

      I read the internet for the articles.
    7. Re:A Bit Left Off by Caerdwyn · · Score: 4, Informative

      Manufacturing solid rocket motor fuel is, essentially, a casting operation: you pour the liquid into a mold, then the liquid sets into a solid in the shape you need (and the shape is critical in rocket motors). The trouble with the solid rocket boosters as used in the Shuttle is that they are so big you have to cast them in segments, then stack them and join them. Wherever there is a seam between the segments, the burning solid fuel tends to burn into that seam; this increases the surface area that is burning, which increases pressure, which increases burn rate, which increase pressure, ad explosium. It's a very difficult (meaning: expensive and risky) problem to manage, and as we found out with Challenger, cold temperatures can cause shrinkage which opens up those seams, changing the internal geometry of the motor. Multi-segment SRBs are just plain trouble.

      As anyone who has worked in large-scale casting can tell you, there are limits as to how much you can cast in a single pour. Your liquid is cooling even as you pour it, changing in volume as it cools. If you pour in multiple phases, letting it cool between phases, you're introducing seams, and subsequent pours can partially remelt previous pours, causing expansion in the previous seam and possible cracking (which are uncontrolled seams and surface area... if your solid core has internal cracking, there is a very high chance of explosion). And large continuous pours also have the potential for cracking as the early parts of the pour solidify and cure while the later parts are still molten. This, plus limits on how large a segment of solid rocket fuel you can transport without flexing (cracking) safely, is what puts upper limits on single-segment solid rocket motors.

      Solid rocket motor technology on large scales comes mostly from ICBMs. You want solid motors on your ICBMs, as a single-segment motor is more rugged than a liquid fueled motor, your launch vehicle is readily transportable and self-contained, does nto need a refueling infrastructure, and is always ready to use (keeping liquid fuels in tanks for a long period of time is dangerous and high-maintenance). ICBMs don't have to throw 60,000-plus pounds of payload into orbit, therefore they don't need engines larger than can be cast in a single segment.

      Nothing wrong with SRBs for sub-orbital missions with moderate payloads, or orbital missions with small payloads. But for the mass that a heavy lift booster needs to throw into orbit and beyond, they just don't scale well.

      The sad fact is that the political and budgetary environment are constraints of problem-solving at NASA, just as surely as mass, temperature, volume, gravity and materials technology are constraints. Any viable proposal needs to take into account and address ALL constraints.

      This is why all senior NASA people seem to get grey hair early.

      --
      Everybody gets what the majority deserves.
    8. Re:A Bit Left Off by bertok · · Score: 2

      Can someone explain the disadvantages of SRBs? Is it just that they are more explosive?

      They can't be turned off once ignited, can't be throttled, and they have high-pressure & high-temperature along the entire body of the booster instead of just in a relatively small "engine" at the bottom like liquid-fuelled rockets, which means they're a significant safety hazard if placed alongside liquid fuel tanks, like in most rocket designs.

      What happened with the Challenger disaster is that a seal near the middle of one of the boosters failed, and the hot pressurised gasses escaped and cut into the main liquid tank like a welding torch. The same (or similar) risk will be present in the Ares V design.

      Compare with the Saturn V, which had liquid-fuelled stages only, where a failure of a single engine could still result in a successful launch. This happened more than once during the Apollo missions, and no lives were lost.

      Liquid fuelled rockets have their own issues too, like having to run turbo-pumps at enormous speeds and cryogenic temperatures. I found a scanned online version of the Saturn V Flight Manual recently. Here's a great quote:

      The only substances used in the engine are the propellants and helium gas. The extremely low operating temperature of the engine prohibits the use of lubricants or other fluids.

      Just... wow.

    9. Re:A Bit Left Off by jd · · Score: 2

      The Russians avoided the stacking problem (and the problems involved in large rocket nozzles) by having very large clusters of SRBs. This approach seems to be relatively reliable (the Russians don't seem to have noticeably more launch failures than the US).

      As I've noted elsewhere, though, hybrid rockets (using a mix of solid and liquid fuels) seems to be the way to go, as it gives most of the benefits of solid with most of the benefits of liquid. It may also reduce the casting problem, as half your fuel doesn't need to be cast.

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
    10. Re:A Bit Left Off by Caerdwyn · · Score: 2

      The risk-reward-constraint issues with solid rocket boosters come down to this:

      REWARD: solid rocket boosters have a better ratio of thrust-per-pound-of-motor, and single-segment SRBs are very reliable and mechanically simpler than liquid fuel. They are also cheaper in a pound-of-payload-to-orbit per dollar calculation when the entire cost is calculated.

      RISK: multi-segment SRBs are more prone to failure than single-segment SRBs for many reasons (increased manufacturing complexity, increased vehicle assembly complexity, increased vehicle fragility, thermal issues, increased operational complexity. Managing this risk requires expensive solutions.

      CONSTRAINTS: single-segment SRBs, because they have a maximum size, have a maximum amount of lift capacity. Larger than that and you either go multi-segment, and/or large clusters of single-segment SRBs, and/or single-segment SRBs which are staged. All of these increase complexity and expense, as well as driving up the failure rate.

      Hybrid solutions arrive when you figure out the acceptable risk level, budgetary constraints, what your mission profile is, i.e. how much payload and whether it's suborbital, low orbit, high-orbit or beyond, and other factors such as immediacy of launch and acceptable pollution level from a launch (even hydrogen-oxygen systems pollute, as they are being fired in a nitrogen-oxygen atmosphere, therefore you will get ozone and nitrous oxide by exposing N2 and O2 to the heat of the exhaust). You locate the points on these various axes for all the proposed solutions, and pick the one where the dots cluster closest together and all live inside the constraints.

      Space is hard. I'm glad I don't have to be a rocket scientist, otherwise I'm sure what's left of my hair would fall out from sheer frustration :)

      --
      Everybody gets what the majority deserves.
    11. Re:A Bit Left Off by afidel · · Score: 2

      So stop putting the people on top of the cargo stack, launch them separately and have them rendezvous with the deep space vehicle en route. It's a lot easier to make a safe affordable vehicle if it's small and we already have some grasp on how to make a big payload vehicle cheap so marry the two.

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
  4. Reuse shuttle parts? by h4rr4r · · Score: 5, Insightful

    Sounds more like corporate welfare then science to me.

    Let's just ask Elon what a Falcon XX will cost instead.

  5. Re:Politician Engineer by TheL0ser · · Score: 3, Insightful

    Slightly worse, I'd say. You're a single person, so you can just point at a color, whatever it may be, and call it good. They have to pass a resolution to create a committee to appoint a group to review the plans, and then squabble about who gets what in their state.

  6. This is Jupiter Direct by vinn · · Score: 4, Interesting

    This is basically the Jupiter Direct program advocated by quite a few insiders at NASA. It was designed by some NASA engineers moonlighting. So, this isn't some half-baked scheme by Congress to try to engineer something themselves. I didn't look at these final details, but it does sound like they added more SRB's than originally planned.

    For more information, see the wikipedia entry:
    http://en.wikipedia.org/wiki/DIRECT

    --
    ----- obSig
  7. Frankenstack by burisch_research · · Score: 3, Interesting

    The Falcon 9 is a heavy lift vehicle. It can deliver 32000kg to LEO at a cost (supposedly) of $95M per launch. (http://en.wikipedia.org/wiki/Falcon_9)

    I can't find any figures for NASA's new Frankenstack, but I'm guessing its capabilities would be approximately similar. Except that they have $10bn budget to play with, so we can be reassured that the cost will expand to consume the budget, even if they are using obsolete technologies.

    --
    char*f="char*f=%c%s%c;main(){printf(f,34,f,34);}";main(){printf(f,34,f,34);}
    1. Re:Frankenstack by lee1026 · · Score: 2

      A quick wikipedia search will tell you that the Ares V plan on having a payload of 188000Kg, or about 6 times more.

    2. Re:Frankenstack by Tekfactory · · Score: 4, Interesting

      SpaceX plan costs $1 Billion just to develop the Merlin 2 engines and "qualify" them on Falcon 9 rockets in 3 years. I assume by qualify they mean flight tested, I don't know if a Heavy Lift vehicle needs to be man-rated. Of course the Falcon 9 will have to be man rated to carry a Dragon capsule with crew onboard, so if qualify means man rated so much the better.

      You have $9 Billion left to build the Rocket, and finish the Dragon capsule crew module version which is already funded.

    3. Re:Frankenstack by Dunbal · · Score: 2

      But the pen is mightier than the sword. Wait until Elon has a lot of capital invested. When he's in up to his teeth, suddenly someone somewhere will pass a new tax law, close a loophole, require approval for something from some agency and shut him down. To "save" the pork make-work jobs that are now "threatened".

      Just watch, this is exactly how governments work.

      --
      Seven puppies were harmed during the making of this post.
    4. Re:Frankenstack by FleaPlus · · Score: 2

      > Elon's guarantees are somewhat suspect given the scheduling and cost overruns of Falcon 9.

      Last I checked, Elon's schedule and cost overruns for developing rockets tended to be considerably better than NASA's. Anyone else remember how the cost of former NASA Administrator Michael Griffin's Ares I rocket rapidly balloon from an initial ~$15 billion to well over $40 billion? This was for a rocket which was advertised with the motto, "safe, simple, soon."

      Also, unlike NASA, Elon Musk has actually successfully developed and launched an orbital rocket in the past 30 years. Sadly, almost everybody at NASA with actual rocket development experience is either retired or dead.

  8. Re:Politician Engineer by Amorymeltzer · · Score: 2

    Absolutely, and I think this is indicative of the sort of problem that plagues the legislative branch these days. Congress has the power to control almost everything, but that doesn't mean it should and it certainly doesn't mean the Senators and Representatives should be the ones making all of the detailed decisions. It's what delayed reversing DADT for so long - legislators thinking that, for some reason, they are more equipped to make a decision than the people currently running the military. NASA is another great example - ALL of the people qualified to make a decision on this sort of thing are at NASA and NONE are in Congress. Congress should say "We want to fund this type of goal for this amount of money, give us something that you think works." No more. Scientific progress should not be contingent on who wants to grab more laborers for his/her district. Until we vote for people aside from lawyers and professional politicians, Congress needs to listen to actual experts.

    --
    I live in constant fear of the Coming of the Red Spiders.
  9. What, this is nonsense by mrwiggly · · Score: 4, Insightful

    Well, first off all the problem with discoveries tank is due to a manufacturing problem with the stringers, not a design flaw.

    Second of all, why use SSME's? They are designed for re-use, and have restart capability that will not be needed. A better choice would be the rocketdyn's RS-68, single use, cheap as fuck, provides more lifting power.

  10. Why does Congress make engineering decisions? by MobyDisk · · Score: 4, Insightful

    Congress required that the new heavy lift vehicle maximize the reuse of space shuttle components as part of its budget battle with President Obama last year

    So congress made engineering decisions for NASA. They told NASA to reuse some parts from something else. And does Congress even know if that actually saves money? There have been plenty of times I've been told to develop something and to reuse an existing piece of code, and I've had to disappoint someone by pointing out that reusing their old COBOL EXE does not actually shrink the timeline. :-( In mechanical engineering, I've learned that reusing parts often adds a lot of work.

    Maybe that isn't the case here, but Congress should instead have set constraints and let NASA decide how best to implement it. No doubt the new request also tells them what vendors to use, and what state to by them from, and where to eat lunch so that the money gets spread around to their own pet projects.

    1. Re:Why does Congress make engineering decisions? by Registered+Coward+v2 · · Score: 2

      Congress required that the new heavy lift vehicle maximize the reuse of space shuttle components as part of its budget battle with President Obama last year

      So congress made engineering decisions for NASA. They told NASA to reuse some parts from something else. And does Congress even know if that actually saves money? There have been plenty of times I've been told to develop something and to reuse an existing piece of code, and I've had to disappoint someone by pointing out that reusing their old COBOL EXE does not actually shrink the timeline. :-( In mechanical engineering, I've learned that reusing parts often adds a lot of work.

      Maybe that isn't the case here, but Congress should instead have set constraints and let NASA decide how best to implement it. No doubt the new request also tells them what vendors to use, and what state to by them from, and where to eat lunch so that the money gets spread around to their own pet projects.

      No, Congress doesn't make engineering decisions. They make budget decisions, i.e., they ensure money get spent in their district by defining what to buy. If Congress made engineering decisions and something went wrong, they might get blamed and that would not be a good thing.

      --
      I'm a consultant - I convert gibberish into cash-flow.
    2. Re:Why does Congress make engineering decisions? by Nimey · · Score: 2

      The usual reason: money and power.

      --
      Hail Eris, full of mischief...

      E pluribus sanguinem
  11. Re:Falcon XX by Nyeerrmm · · Score: 2

    Actually I think thats the point ESMD is trying to make here. Congress mandated that they use SRBs et. al., so ESMD comes back and says "all right, we can do it, but it WILL be late and overbudget."

  12. Re:Nuclear Verne Cannon? by blueg3 · · Score: 2

    They want the things launched into space to survive the trip.

    It's already tricky to engineer things like satellite components so that they can withstand the force and vibration of liftoff on a rocket.

  13. be PROACTIVE! by Thud457 · · Score: 4, Insightful

    Unlike Congress, a fence post has the wisdom to refrain from doing anything actively stupid.

    --

    the preceding comment is my own and in no way reflects the opinion of the Joint Chiefs of Staff

  14. HLV needed? can it be successfully promoted? by k6mfw · · Score: 3, Interesting

    I think this whole thing is gonna die no matter how it is presented (which is too bad because all this great technology and we all still going to the same place Yuri Gagarin visited nearly 50 years ago).

    I believe it was Dennis Wingo who wrote a comment on nasawatch.com that proposing HLV is a non-starter. Reason is such a launch vehicle is so expensive there is no way such a program will be approved by congress. It would be nice to have a Saturn V class vehicle that can place 100 tons in one shot but if you ain't got the money, then do planning for lower cost lower payload rockets (there are several). Supposably Sean Okeffe, NASA administrator before Mike Griffin, as a longtime Washington DC politico understood this so didn't push for a HLV. But he was replaced by Mike Griffin (man o man you should read the rants about Griffin on nasawatch). I don't know all the details but enough to bring up some interesting discussion (new topic for /.?)

    I read on Wayne Hale's blog that OMB made the edict to Augustine Commission to not present any options that cost more than $3B which limited options "worthy of a great nation's exploration." Kind of reminds me of funding large programs, either put a lot of money upfront on development but save on operational costs, or skimp on development and have a more expensive operations cost.

    I think the biggest question that needs to be answered is why go back to the moon and on to Mars? Back in the 60s, we knew exactly why a HLV had to be built. It was needed for Apollo so we can beat the Reds to the moon. Otherwise if they get there first, they will plant the Soviet flag on the moon seizing the high ground and enslave the rest of world in Communism. Now that all may sound silly but if you read all the history, it was serious back then. However, looking back the Apollo program could have "failed" like the Soviet lunar program (Korolev never had the resources needed for a HLV and much of the Politburo argued among themselves), the USAF MOL never flew (it just kept getting more and more complex), and John Houbolt at LaRC was able to successfully get the LOR adopted (which was among a few key fundamentals to have Apollo/Saturn work without violating the laws of physics). Also note that Saturn V was built to fulfill a single task. It was too expensive for "routine" flights to the moon, and Ares V is trying to be "routine" which I can never see congress funding.

    I'd love to see us go back to the moon and see what the old Apollo sites look like now (and... what if they were to find the rovers on blocks with the tires missing?!?!). However, if I could wave the magic wand, I would direct NASA to do research and development in making access to space lowcost. So far all orbital access requires major bucks and a huge standing army just to get a small elite few into space (I'm not elite and I wanna go!)

    --
    mfwright@batnet.com
  15. Time to start rooting for the Chinese? by supremebob · · Score: 2

    As this point, I'm rooting for the Chinese space program to steal some of NASA's failed ideas and try to put men on the moon by 2020. Unlike the US, they still have the money, manpower, and manufacturing capabilities to pull it off.

    Honestly, It seems that the US government is only interested in funding NASA properly when they're losing the space race.

  16. Re:Falcon XX by FleaPlus · · Score: 2

    > Actually I think thats the point ESMD is trying to make here. Congress mandated that they use SRBs et. al., so ESMD comes back and says "all right, we can do it, but it WILL be late and overbudget."

    I think this is essentially NASA's way of telling Congress that there are two options:

    * a rocket that uses as many Shuttle-legacy components as possible and continues delivering a stream of funding to politically-important congressional districts
    * a rocket that meets Congress's schedule and budget requirements

    Congress can only pick one. Unfortunately, I have a feeling that they'll pick the first, only cancelling the project after the schedule and budget have gone completely to hell (i.e. repeat of Ares I), and after it's already delivered plenty of funds to key districts.