Under the new plan hasn't NASA given money already this month to a winged RLV project? I know from many of your posts that you very much like winged vehicles--I'm surprised you're not jumping for joy about this.
Re: DIRECT best Political compromise« Reply #246 on: 02/24/2010 04:17 PM » Reply with quoteclb22,Understood, and I agree completely with the principle of what your saying. My point of contention is really that I believe you are drawing the line too high. So let me try to define that as simply as I can:This is all about Lifecycle Costs. Lifecycle Costs are dominated (about 80:20 ratio) by Annual Recurring Operational Costs. Operationally, the cross-over point where Jupiter becomes lower cost compared to EELV comes at a launch rate of approximately ~300mT per year (+/- 15mT). Thus...If your mission requirements are above that point, then SD-HLV is the more cost effective option.If your mission requirements are lower, then EELV is your better option.The only remaining question is "how much do we need?"Ross.
Sierra Nevada's DreamChaser is getting $20 million for the next fiscal year as I recall. Obviously, that's peanuts in terms of s/c development money - enough to do some preliminary design work I guess. So, realistically, what are we looking at? At least a couple of years of design work, followed by several more years of development and testing, assuming much higher funding becomes available? Assuming that everything goes smoothly, and for the first time in history a new spacecraft development program doesn't hit any snags, delays, or cost overruns, how soon could DreamChaser be operational? 5 years? And what are the odds of an upstart company successfully developing such a vehicle - even one based on the HL-20 - with no significant problems along the way? And where is the money to man-rate the Atlas V, which DreamChaser is counting on if it's ever to make it into orbit?Now, if DreamChaser had been awarded $200 million rather than $20 million, maybe I'd be a little more optimistic about it being a serious program.
Quote from: nooneofconsequence on 02/25/2010 12:32 amQuote from: clongton link=topic=20649.msg552013#msg552013 date=1267060734The context of the post was [b7th grade school kids[/b], not adults.Bolden' remark was that he didn't want 7th graders thinking about Mars and that kids that age are not interested in the rockets. He's wrong! For kids that age it is literally *all about the rocket*. It may now be about rovers or scientists - given kids I speak to.They don't bring up the Shuttle. They do ask about launch/reentry/spaceflight ...Times change.The poster below says it all. Can you even picture the adventure going on in his head? Calculus will never grip him like that.
Quote from: clongton link=topic=20649.msg552013#msg552013 date=1267060734The context of the post was [b7th grade school kids[/b], not adults.Bolden' remark was that he didn't want 7th graders thinking about Mars and that kids that age are not interested in the rockets. He's wrong! For kids that age it is literally *all about the rocket*. It may now be about rovers or scientists - given kids I speak to.They don't bring up the Shuttle. They do ask about launch/reentry/spaceflight ...Times change.
7th grade school kids[/b], not adults.Bolden' remark was that he didn't want 7th graders thinking about Mars and that kids that age are not interested in the rockets. He's wrong! For kids that age it is literally *all about the rocket*.
Quote from: clongton on 02/25/2010 12:53 amNice side-step No, he *absolutely* was talking about 7th grade kids not caring about the rockets. He said:Quotethey don't care about the launch vehiclesHe was talking about the kids and he said it in the context of what does and does not inspire kids. There is no mistaking what he said. It was so clearly stated that it's not even open to misinterpretation. You might want to "spin" it, the same way politicians spin an unpleasant truth, but that would be beneath you; and you're better than that.Face it; he said a stupid thing.Chuck!! I absolutely agree he said a stupid thing. What I'm saying is that if he were in the room he'd agree he said a stupid thing, too and admit he meant to say what I said, precisely because it would be the most sensible thing for a person in his position to say.Do you believe in your heart that Bolden doesn't think that 7th graders like rocket ships? If there's one thing that people of every nationality and creed on this Earth can probably agree to, it's that 7th graders like rocket ships. It would be utterly bizarre for someone who commanded a rocket ship to think otherwise, but it would be slightly less bizarre if he said something silly to the contrary under pressure. Am I interpreting what he said in this situation--sure, but I think it makes sense given the context.Dan
Nice side-step No, he *absolutely* was talking about 7th grade kids not caring about the rockets. He said:Quotethey don't care about the launch vehiclesHe was talking about the kids and he said it in the context of what does and does not inspire kids. There is no mistaking what he said. It was so clearly stated that it's not even open to misinterpretation. You might want to "spin" it, the same way politicians spin an unpleasant truth, but that would be beneath you; and you're better than that.Face it; he said a stupid thing.
they don't care about the launch vehicles
The gap has nothing to do with HLVs. You can get to orbit quite well with vehicles a lot smaller than HLVs. You can even do exploration this side of Phobos without HLVs. HLVs are at best a means to an end, not an end in itself. What I care about are the ends: space settlement, exploration, and space commercialization. If an HLV has a part to play in reaching those ends at some point down the road, that's fine, and in fact this plan allows you to retain the capability you need to turn that option on when you're actually closer to needing it.But this HLV fetish so many have here seems to border on a cargo cult mentality.~Jon
Mike Snyder for President!
And what are we to get to orbit on? Soyuz...sure that's the right strategy.
What are we to do exploration with? Last I checked there is no plan for that.....just R&D, which is ironic given the person I'm replying to.
This "plan" allows for anything and everything, because there is absolutely no definition to it.
on SDLV one is lucky to get to 4x Russian levels. Not a good argument for doing SDLV. So Ross - have them do Jupiter to compete with ULA? Seriously yes you can do a lot better than Russia/China, but only if you challenge structural issues. You are not going to do that with a govt program.You got to be a fool to believe that anyone is going to use DIRECT as anything other than an argument to get back to funding POR - bait and switch. Let's not go down the Ares road again. Vitter is bitter about not doing so.
Quote from: OV-106 on 02/25/2010 04:08 amAnd what are we to get to orbit on? Soyuz...sure that's the right strategy.Well, there's also that whole commercial crew investment that the Obama budget proposal was going to put $6B on. But really, I don't see any realistic plan that doesn't involve at least some gap where American astronauts are flying on Soyuz for a few years while a new system (public or private) hopefully comes on line. This could've been avoided by funding commercial crew and cargo sooner and more aggressively, but unfortunately we didn't make that choice then so we're stuck with the reality we live in now.QuoteWhat are we to do exploration with? Last I checked there is no plan for that.....just R&D, which is ironic given the person I'm replying to.It depends a lot on what your initial exploration targets are, and how you're willing to go about them. There *are* ways to do realistic and useful exploration in cislunar space and even out to some of the nearer NEOs based on the tools that the commercial crew and cargo efforts and the technology demonstration efforts will likely have online in the next five years if the funding actually occurs.HLVs *might* be needed down the road, but there's a ton you can do just as well without them.QuoteThis "plan" allows for anything and everything, because there is absolutely no definition to it. There's actually a lot of details in it, if you're willing to look. Sure, it doesn't say "Go to destination X by date Y", but it does give details like:1. Specific lists of technologies and technology areas they would like to see demonstrated.2. Rough timelines for when they would like to see those demonstrated by (all the tech demo stuff is explicitly targeting demonstration within 5 years according to several of the budget documents).3. Budget guidelines for the size range of these demonstration missions at various maturity levels4. Rough timelines for when commercial crew capabilities are targetted for coming onlineetc.And there are efforts underway throughout the research side of NASA to put even more specifics to each of these technology dev/demo focuses, providing more details on whats, whens, and hows.Absolutely no details there. Absolutely vague. Nothing but flying on Soyuzes as far as the eye can see...~Jon
Quote from: dbhyslop on 02/25/2010 03:11 amUnder the new plan hasn't NASA given money already this month to a winged RLV project? I know from many of your posts that you very much like winged vehicles--I'm surprised you're not jumping for joy about this.Sierra Nevada's DreamChaser is getting $20 million for the next fiscal year as I recall. Obviously, that's peanuts in terms of s/c development money - enough to do some preliminary design work I guess. So, realistically, what are we looking at? At least a couple of years of design work, followed by several more years of development and testing, assuming much higher funding becomes available? Assuming that everything goes smoothly, and for the first time in history a new spacecraft development program doesn't hit any snags, delays, or cost overruns, how soon could DreamChaser be operational? 5 years? And what are the odds of an upstart company successfully developing such a vehicle - even one based on the HL-20 - with no significant problems along the way? And where is the money to man-rate the Atlas V, which DreamChaser is counting on if it's ever to make it into orbit?Now, if DreamChaser had been awarded $200 million rather than $20 million, maybe I'd be a little more optimistic about it being a serious program. Heck, even that would be peanuts! Taxpayers spent, what, $1.2 billion on the suborbital X-33 demonstrator that never even got near completion?
Quote from: northanger on 02/24/2010 09:23 pmQuote from: Chris Bergin on 02/24/2010 09:20 pmBolden is simply a mouthpiece for Obama's plan and Obama's plan kills shuttle. He was never going to go against Obama's plan.Chris you know better! VSE ended shuttle at 2010.Agreed.Too much grandstanding (all around) in the hearings, as usual for Congress. I heard a lot of quoting JFK without suggesting that we spend 4% of the budget as was done at the peak of Apollo.It's constantly mentioned that a large impediment to shuttle extension is the cost of restarting many of the assembly lines that have been shut down. I don't recall seeing specific numbers - are we talking $10M? $100M? More? Any links (public or L2) would be appreciated.Extending shuttle to meet commercial at the other side is great in principle, but as always money matters.
Quote from: Chris Bergin on 02/24/2010 09:20 pmBolden is simply a mouthpiece for Obama's plan and Obama's plan kills shuttle. He was never going to go against Obama's plan.Chris you know better! VSE ended shuttle at 2010.
Bolden is simply a mouthpiece for Obama's plan and Obama's plan kills shuttle. He was never going to go against Obama's plan.
No, we are not stuck. We have a vehicle.
Commercial, at best, is 3-4 years away for crew. The current "plan" is not a plan and hopes and assumes with zero contingency.
As for the rest, I hate to say this Jon but that is simply looking through rose colored glasses. General lists, not really what I would call specific, of when maybe we would like to see technologies developed but then having no definitive plan to use them is a strategic mistake.
The 4% quote is meaningless. The Federal budget is so many times larger as a percentage of GDP now than it was then that number has no meaning. The pie is so much bigger now than it once was that money is not really the issue, it is one's vision of the future that matters. This is a decision based first on the political will of the leadership to do something. Or do nothing of any significance. Or end something of significance.
Quote from: nooneofconsequence on 02/24/2010 10:11 pmon SDLV one is lucky to get to 4x Russian levels. Not a good argument for doing SDLV. So Ross - have them do Jupiter to compete with ULA? Seriously yes you can do a lot better than Russia/China, but only if you challenge structural issues. You are not going to do that with a govt program.You got to be a fool to believe that anyone is going to use DIRECT as anything other than an argument to get back to funding POR - bait and switch. Let's not go down the Ares road again. Vitter is bitter about not doing so. That arguement is silly and someone who does not understand the bigger picture and assumes because someone arbitrarily calls it "commercial" that it is better and cheaper. Fact: government is mainly an oversight function in Shuttle today and does not "turn wrenches", etc in that world. While NASA is present, if you eliminated them, it would not make that big of a difference. There are other ways to reduce costs through other efficienties.
Ross also writes that below that same threshold, EELV is less expensive per kilogram delivered to the lunar surface than with EELV. Therefore this is a bean counting conclusion, not an ideological conclusion.
Quote from: jkumpire on 02/25/2010 05:12 amThe 4% quote is meaningless. The Federal budget is so many times larger as a percentage of GDP now than it was then that number has no meaning. The pie is so much bigger now than it once was that money is not really the issue, it is one's vision of the future that matters. This is a decision based first on the political will of the leadership to do something. Or do nothing of any significance. Or end something of significance. I've been hearing this line of thought (that NASA's budget is such a small part of the overall federal pie that adding huge amounts to it shouldn't be a problem) for literally half of my life. I even remember writing a "persuasive writing" paper on just this topic for my freshman English class back in 96. Between this argument and $5 you *might* be able to get lunch somewhere.Even though NASA is only 0.6% or whatever of the federal budget, the problem is that most people still think it's 10-20% or more of the budget. And that in spite of over a decade and a half of space people trying to "educate" the public on this matter. If Obama tried to boost the NASA budget anywhere near the amount that would be necessary to recreate the situation that enabled Apollo, he'd be politically crucified by his enemies in Congress. Even a $3B increase like what the A-com wanted would've exposed him (and by extension NASA) to all sorts of political attacks at a time when he couldn't afford it. No, he's not going to sacrifice himself to enable aerospace engineers to relive their 1960s glory days. If people heard that Obama was going to say double the HSF budget (about what would be required to enable a "within this decade" return to the Moon), they would think he was increasing the federal budget by 10, 20 or more.Even if they're dead wrong, that doesn't really matter. The damage can easily be done long before the truth has a chance to even put on its shoes.People who think Obama could've just added $3B to the NASA budget without repercussions are living in a fantasy world.~Jon
Old plan: HLV by 2020.New plan: HLV by 2030.