NASA Is Studying A Manned Trip Around The Moon On A $23 Billion Rocket (buzzfeed.com) 317
An anonymous reader shares a report on NASA's ongoing work on a manned trip to the moon. From the report: Without a new administrator even nominated yet, NASA's acting head Robert Lightfoot on Wednesday requested a study of whether next year's first flight of the Space Launch System rocket, billed as the most powerful NASA has built, could have a crew of astronauts. "I know the challenges associated with such a proposition," Lightfoot said in a letter to his agency, citing costs, extra work, and "a different launch date" for the planned 2018 Exploration Mission-1 (EM-1). The mission would be launched by the massive SLS, which is still in development, then boosted by a European service module to put three astronauts inside the new Orion space capsule on a three-week trip around the moon. NASA first sent three astronauts around the moon in 1968 in the Apollo 8 mission. The last astronaut to stand on the moon, the late Gene Cernan returned to Earth in 1972. The new talk of a repeat moon-circling mission, aboard an untested spacecraft, has space policy experts variously thrilled, dismissive, and puzzled. "I frankly don't quite know what to say about it," space policy expert John Logsdon of George Washington University said. Writing on NASAWatch, Keith Cowing called the study request a "Hail Mary" pass to save the life of the SLS ahead of Trump installing a budget cutter to head the space agency. The Government Accountability Office estimates the costs of SLS and its two planned launches (a second, crewed mission is planned for 2023) at $23 billion.
Why not land on the moon? (Score:2)
Why not land on the moon?
Re: Why not land on the moon? (Score:3)
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We've done it (sent a manned ship to at least loop around the Moon) nine times already, almost 50 years ago.
And none of that equipment really exists anymore.
At this point, it's not impressive or useful to replicate Apollo VIII.
Who said anything that the goal was to "impress" you or the American people? If the goal is to use the moon as a base, NASA has to re-develop the technology to get back there. Remember the goal often is a mandate by the government.
It's also insane to send a manned crew on untested hardware. The only time they did that before was for the STS, and that was only because the STS was unable to fly or land without pilots. That was a serious design flaw. This is just a stunt, forced upon NASA due to the obscene cost of the new launch system.
That's a pretty illogical position. Show me the "tested" hardware that will get NASA back to the moon. Most of the tested hardware only exists in museums and are not functional even if NASA wanted to use it. NASA has to build new ha
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Hardly an illogical position, unless you ignore the existence of unmanned spacecraft.
Just send the new vehicle to the moon and back unmanned, and once it's sufficiently tested, *then* you include crew. Of course that assumes the vehicle can operate unmanned, which might be presumptuous, but isn't completely unreasonable. Even the Apollo missions spent 7 years on unmanned test flights before the first manned capsule (Apollo 1) was launched, and it wasn't until Apollo 11 that they actually landed on the moo
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Hardly an illogical position, unless you ignore the existence of unmanned spacecraft.
The logic of the OP: NASA shouldn't use new, "untested" hardware. In other words, NASA should use tech from 50 years. My point: The Apollo tech was also new and untested when NASA first used it. NASA always has to test tech before they use it.
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Who said anything that the goal was to "impress" you or the American people? If the goal is to use the moon as a base, NASA has to re-develop the technology to get back there.
There's no economic benefit to a moon base, so it's all for show anyway.
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Think back to, oh, 1600. Imagine the conversations in taprooms in England- "there's no economic benefit to a colony in North America, so it's really just for show anyway"....
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there's no economic benefit to a colony in North America
The analogy makes no sense. You could have dropped a naked man there without any tools, and he'd be able to survive. Try that on the Moon.
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But nobody actually thought that. Columbus came to America searching for a lucrative trade route to the riches of India. Those who followed him came to loot the gold of the american people and enslave them, with a clear quick profit in mind.
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No it wasn't. They tested it unmanned. Then they tested it in LEO multiple times. Only then did they send it around the moon. Apollo 8 most likely would have been a failure if not for the earlier testing.
Your logic baffles me: You are saying sending a mission to moon requires "untested" hardware but when NASA did the exact same thing the last time with Apollo 8 and Apollo 10, they were magically tested without having done it before.
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Apollo 7 was the first manned test of the Apollo capsule. It was launched on a Saturn 1B, not a Saturn V. So the CSM had been tested in Earth orbit.. Furthermore, Apollo 8 was originally supposed to be a test of the LM in Earth orbit. However, because the LM was not ready, Apollo 8 and Apollo 9 missions were essentially "swapped."
Apollo 8 was the first manned test of the Saturn V. There had been several tests of the Saturn V before Apollo 8, however there were plenty of issues. NASA tested some of the
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Been there... Done that.... Plus, it's a whole new kettle of fish when you start trying to land on return and surviving the trip.
Maybe if we billed it as a "dress rehearsal" for a Mars mission.... Go out and orbit the moon for the duration of a Mars trip, go to the surface, return and orbit the moon some more to simulate the trip home.... All within a quick (a couple of days) return distance of home... Maybe that would sell the PR better?
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Good luck getting anyone to sign up for that kind of radiation exposure for a "dress rehearsal"...
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With what descent stage? (and preferably ascent stage too ;) )
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Money problems? Consider; Trump Tower, The Moon.
Appeal to his ego, tell him space tourism is going to be YUUUGE!
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Landing on the moon is much, much harder than just flying around it.
If you're just flying past the moon, you need a capsule of, say, 2 tonnes to carry a couple of astronauts. But if you want to slow down into a low lunar orbit, you need about 25% of your mass in fuel on the way out (an extra 0.5 tonnes) and another 25% of your mass in fuel to slow down into lunar orbit in the first place (an extra 0.625 tonnes, since you have to slow down the fuel you'll use on the way out).
To actually land, you need about
Great idea... But there is a problem... (Score:2)
We've already done this a couple of times... The public will just throw up their hands and say "Nothing new to see here! Move along!" Even landing on the moon wouldn't be enough here.
Where I applaud the effort here and believe the money would be well spent doing this, In order to get this kind of thing funded at NASA, we are going to need a better narrative for the press to run with. Something that seems new and exciting. Sadly, because we have been running NASA on less than a shoestring budget for ove
Re: Great idea... But there is a problem... (Score:2)
Re: Great idea... But there is a problem... (Score:5, Interesting)
Launch what, exactly, from the Moon?
I think you're confusing "a moon base" with "a full industrial infrastructure capable of producing complex objects". Even the concept that it would be cheaper to launch unrefined raw regolith from the moon cheaper than we can launch equivalent mass payloads from Earth anytime even remotely soon is absurd.
Earth is where industry is. The fact that we're a deep gravity well increases costs, but that difference is nothing compared to the difference in industrial capacities on and off Earth. Every production process has feedstock and consumables dependency chains. Those have dependency chains, and those have further chains, to a massive network of ever-increasing complexity. One of the worst dependencies is humans, which in turn spawn massive dependency chains.
Now, ultimately you can meet these things to the degree that the few things you have to import to sustain local industrial activity (at incredible cost) do not price the cost of local rocket launches out of the market., but if you think that's going to happen any time in the next few decades, you're deluding yourself. The serious proposals for going to the moon before Mars are for the moon to function as a testbed for habitats and systems designed for Mars.
Anyway, I'm personally much more for the habitation of Venus than Mars, but that is neither here nor there :)
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I think you're confusing "a moon base" with "a full industrial infrastructure capable of producing complex objects". Even the concept that it would be cheaper to launch unrefined raw regolith from the moon cheaper than we can launch equivalent mass payloads from Earth anytime even remotely soon is absurd.
Nowhere did I say that NASA needs to rebuild and entire installation; however, in terms of fuel cost it is much easier to launch from the Earth to the moon then refuel at the moon to launch at Mars than to launch from Earth directly to Mars. Do the math.
Earth is where industry is. The fact that we're a deep gravity well increases costs, but that difference is nothing compared to the difference in industrial capacities on and off Earth. Every production process has feedstock and consumables dependency chains. Those have dependency chains, and those have further chains, to a massive network of ever-increasing complexity. One of the worst dependencies is humans, which in turn spawn massive dependency chains.
Current NASA plans have the moon as a refueling point. That requires a moon base.
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Implicit in saying that is the premise that the moon has an industrial base, because you don't make fuel and launch rockets without an industrial base. And an industrial base means dependency chains. And even importing a very small fraction of the amount from Earth to fill gaps in their dependency chains that they launch from the
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Implicit in saying that is the premise that the moon has an industrial base, because you don't make fuel and launch rockets without an industrial base. And an industrial base means dependency chains. And even importing a very small fraction of the amount from Earth to fill gaps in their dependency chains that they launch from the surface would easily price them out of the market. Never mind the absurd capital costs you have to amortize.
What is the cost of launching a Mars vehicle directly from Earth? Insanely high. And it has diminishing returns. There is no practical way to launch a large enough manned vehicle for Mars and have enough fuel to make the trip in a reasonable amount of time (even if it is a one-way trip.). The vast amount of fuel is spent to launch something into orbit; there's little left for the journey. Let's take a look at the Falcon Heavy heavy lift vehicle [wikipedia.org] which is one of the heaviest available right now. The payload t
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$7k/kg by Falcon Heavy pricing. Would you rather a different launch system?
Not really. But the problem is your "lowering prices" standards involves having to send things into to an entirely different gravity well (consumables), and landed propulsively, so that other different things can then be launched from said gravity well.
Your proposal, absolutely.
From Earth, there are no diminishing returns wha
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$7k/kg by Falcon Heavy pricing. Would you rather a different launch system?
Have you been paying attention? The proposal is not to launch DIRECTLY from Earth. The word you don't seem to understand is DIRECTLY.
Not really. But the problem is your "lowering prices" standards involves having to send things into to an entirely different gravity well (consumables), and landed propulsively, so that other different things can then be launched from said gravity well.
What? The problem is no one has made a vehicle large enough to launch a manned Mars vehicle. No one. It's not about "lowering" standards. It's about practical limits.
Your proposal, absolutely.
False: It's not my proposal. Experts like at MIT say it's the est option. [mit.edu]
From Earth, there are no diminishing returns whatsoever. Just the opposite - the more you launch, the cheaper it gets per kg.
Er? Are you insane? There are always diminishing returns. So the ISS was launched at once will all modules intact or was it built over decad
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I think you're confusing "a moon base" with "a full industrial infrastructure capable of producing complex objects". Even the concept that it would be cheaper to launch unrefined raw regolith from the moon cheaper than we can launch equivalent mass payloads from Earth anytime even remotely soon is absurd.
Nowhere did I say that NASA needs to rebuild and entire installation; however, in terms of fuel cost it is much easier to launch from the Earth to the moon then refuel at the moon to launch at Mars than to launch from Earth directly to Mars. Do the math.
Delta-V costs are not the only criteria. You're the one proposing that it is "easier [to] refuel at the moon" [sic] so the onus is on you to detail how much developing a moon base sufficient to perform extraction of fuel/oxidizer and the means to transfer them to earth launched vehicles are versus doing so from earth. Don't forget that spending billions to develop a rarely used infrastructure is precisely the point that most critics of NASA have at present...
Earth is where industry is. The fact that we're a deep gravity well increases costs, but that difference is nothing compared to the difference in industrial capacities on and off Earth. Every production process has feedstock and consumables dependency chains. Those have dependency chains, and those have further chains, to a massive network of ever-increasing complexity. One of the worst dependencies is humans, which in turn spawn massive dependency chains.
Current NASA plans have the moon as a refueling point. That requires a moon base.
"Current" NASA plans have a tendency to change wi
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Delta-V costs are not the only criteria.
The number one limiting factor of any space vehicle is cost per kg at launch. NASA could build a Mars vehicle any size they wanted except they have to figure a way to get it in orbit without spending the entire budget to launch it.
You're the one proposing that it is "easier [to] refuel at the moon" [sic] so the onus is on you to detail how much developing a moon base
I am not proposing. I am relaying what has been proposed. [space.com]
sufficient to perform extraction of fuel/oxidizer and the means to transfer them to earth launched vehicles are versus doing so from earth.
No oxidizer is required for electrolysis.
Don't forget that spending billions to develop a rarely used infrastructure is precisely the point that most critics of NASA have at present...
1) I didn't say it would be easy. I said it would be "easier".
2) How much fuel is left in a space vehicle after Earth orbit is reached? Very little. There's a reason most space pr
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Habitation of Venus would be "cloud cities" for the next several centuries, unless you've got a better Terraforming plan than any I've read.
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"That book"?
Why Venus? Venus has the most Earthlike environment in the solar system outside Earth. High latitudes in the middle cloud layer have Earthlike temperatures, pressures, gravity, sufficient radiation shielding, ample light, and diverse resources already gas phase and only needing to be run through a scrubber to give you feedstocks (even iron, in the form of iron chlorides - estimated at about 1% of the mass of the sulfuric acid - which, by the way, thermally decomposes in the presence of a catal
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How would the money be well spent?
If the money is spent paying Google, Netflix, Verizon, or other engineers, we end up with newer infrastructure, better services, and the like. If it's spent building rockets to circle the moon, then we still pay this (not just "we pay it in taxes", but the labor is spent and the labor is compensated--we work and we exchange our time for this), and what do we receive?
Wasteful spending reduces the amount of stuff you receive for the work you do. That's true across an ent
Already scheduled (Score:2)
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That's only temporal: was it a bad idea, and should we hang someone for not stopping it?
Bad ideas don't become good ideas just because they've already done their damage.
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How would the money be well spent?
If the money is spent paying Google, Netflix, Verizon, or other engineers, we end up with newer infrastructure, better services, and the like. If it's spent building rockets to circle the moon, then we still pay this (not just "we pay it in taxes", but the labor is spent and the labor is compensated--we work and we exchange our time for this), and what do we receive?
Wasteful spending reduces the amount of stuff you receive for the work you do. That's true across an entire economy for obvious reasons (if half the farmers instead make war machines, half the food doesn't get made, and you pay for war machines that only go out to get blown up). What are we gaining by spending $23 billion here?
You cannot be serious... Do you have any idea what kinds of technology advancement NASA has been a primary driver of? The list is long, varied and many things invented for our space programs of the 1960-70's are ubiquitous now. Ever used Velcro? Ceramics? Digital cameras? Miniaturized solid state RF communications devices? Anything that depends on something in orbit (GPS, Most Syndicated Radio programs, most remote Sports TV coverage...). Need I go on?
One would expect a new space program would have si
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I'd rather they spend the money on real science than dog and pony shows. Manned missions are expensive. They could launch dozens of satellites that actually do science for the cost of this one mission.
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"We're doing it so the Chinese don't claim the Moon..."
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How much to re-create Apollo? (Score:4, Interesting)
How expensive would it be to re-create the Apollo program?
Would it be cheaper to do an "Apollo plus" with SOME modern technology where modern tech happens to be cheaper or the same price, but leaving out modern tech where it's more expensive?
In other words, would we save $BIGBUCKS by building on what we have instead of starting nearly from scratch?
Before anyone points it out, I am aware that significant amounts of the original Apollo program's designs have been lost, either literally though lost blueprints/design-documents or in practice because the "institutional knowledge" is long-gone. I also know that the original manufacturing facilities are long gone and they would have to be rebuilt. However, significant parts of the design work is either available or easily reverse-engineered, so we wouldn't be starting from scratch.
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How expensive would it be to re-create the Apollo program?
"This graph shows the amount spent by the United States on piloted spaceflight from 1959 to 2015. It shows the importance of the Apollo program ($100 billion spent over ten years) and of the Space Shuttle ($200 billion over 40 years)" [thespacereview.com]. A quick search suggests that NASA's total annual budget for this year is something around $19 billion for context, so Apollo would consume a little over half NASA's total budget per year over the same ten-year period. (That $100 Bn figure is inflation adjusted as far as I
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How expensive would it be to re-create the Apollo program?
"This graph shows the amount spent by the United States on piloted spaceflight from 1959 to 2015. It shows the importance of the Apollo program ($100 billion spent over ten years) and of the Space Shuttle ($200 billion over 40 years)" [thespacereview.com]. A quick search suggests that NASA's total annual budget for this year is something around $19 billion for context, so Apollo would consume a little over half NASA's total budget per year over the same ten-year period. (That $100 Bn figure is inflation adjusted as far as I can see, and yes, that's assuming that it hasn't become more expensive in real terms to do the same thing.)
Awesome article - please upvote!
Re:How much to re-create Apollo? (Score:5, Informative)
"would we save $BIGBUCKS by building on what we have instead of starting nearly from scratch?".
In short - often no.
Nobody sane thinks that you can launch SLS for under 2 billion dollars per launch.
This is a launch cost of $30000 per kg of payload.
Falcon 9 can launch the same payload (admittedly split into several) for $5000/kg.
Falcon heavy (debut flight expected within several months) launches can currently be bought for around $1500/kg.
SLS 'benefited' from congress - who at best have a passing knowledge of rocketry, but a very good knowledge of who makes existing hardware in their constituencies mandating that it use shuttle components.
If you can get - for the same launch cost - not 70 tons, but 1400 tons to orbit, even if they are in 54 ton, not 70 ton lumps - it starts being really questionable what the benefit of the 'shuttle derived' heritage is buying you.
I note also that SpaceX has an at least credible plan to get launch costs down from the above $1500/kg to $30/kg or so, in a totally reusable vehicle.
At this sort of cost, it becomes insane not to entirely reevaluate your lunar strategy.
For example, it may become entirely reasonable not to use a lightweight aluminium-lithium stir-welded composite structure which is indeed very light, but requires months of engineering to design and costs millions, but instead a half inch thick decent aluminium structure that costs tens of thousands.
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I agree. The money would be better spent in SpaceX's ITS interplanetary Booster/spaceship program [wikipedia.org] which would only cost $10 Billion to develop and $62m per launch. The ITS Spaceship [wikipedia.org] could land 100 tons on the moon and return. ITS could also land 100 tons on Mars and return if refueled in situ.. SpaceX does not want to be seen as a competitor to SLS but ITS economics make it hard to ignore.
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Yes, it is more than price, and yes, there is a cost.
However, assembly in orbit is also a valuable skill to learn that is a great positive going forward, and developing that robustly will mean you save nearly two billion dollars per launch.
With SLS, you get a way to use a rocket that is too expensive to use.
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Would it be cheaper to do an "Apollo plus" with SOME modern technology where modern tech happens to be cheaper or the same price, but leaving out modern tech where it's more expensive?
What technology could be saved from Apollo? The idea of the technology could be re-used but in terms of actual physical objects none of the items from Apollo can be used. For example some of the technology of space suits pioneered by Apollo can be used in making new space suits but it will still cost money to make the suits. It will cost money to design the suit from scratch in the first place.
In other words, would we save $BIGBUCKS by building on what we have instead of starting nearly from scratch?
What money do you have in mind that could be saved? Because the vast majority of the engineering has to be re-done.
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The Saturn program should have never been abandoned that's for certain, but other aspects of Apollo technology are literally a few technical generations old now. This is like arguing "rather than building a new CPU, we should reverse engineer a 4004."
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As you note, the tooling for Apollo doesn't exist. The suppliers don't exist. Some parts of the design don't exist any more, and that which does is just on paper. Everything would have to be started over in terms of modern CAD diagrams, full testing, etc. It would be more expensive to recreate Apollo than to make a new system with better performance. Today we have better alloys, better performance designs, more knowledge. And we do have infrastructure and suppliers that exist today, so it makes much m
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The hard part is the low level engineering and testing,
And the *really* hard part is finding a good reason to do it.
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How expensive would the PR fiasco of a crew death on return to the moon 50 years later be?
Apollo had its problems, but all in all, it was a very lucky program with far fewer deaths than it should have had, considering the risks that were being taken.
Sure, we can do it safer today - safer takes more time and money. Apollo was consuming money quickly, but it ran such a short span of years that it really didn't have a chance to match the budget of a modern "safer" program.
Spend the money (Score:2)
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NASA never really wanted SLS.
NASA got SLS mandated on it.
They were compelled by congress to build a 'shuttle derived' vehicle.
There is no real mission for SLS, and it eats up huge amounts of the limited budget on things that could be done much cheaper in other ways.
Atpund the moon (Score:3)
Didn't they already do that like 50 years ago?
and one of the astronauts read from the first verses of Genesis
Mike Oldfield used an excerpt from that on 'Somgs of Distant Earth
Yes I am old enough to remember the Apollo missions
Nice to see Eoin using the old launchpad
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And doing something impressive with it. Those realtime touchdown videos are amazing.
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Didn't they already do that like 50 years ago?
No, that was all fake news. Do some research on the Internet, you'll see. Clearly if it had actually been done already it would not cost that much to do it again, and we wouldn't be talking about silly missions like going around the moon rather than landing on it.
Instead why not offer SpaceX The Money... (Score:4, Insightful)
For 23 Billion, Musk could probably build a Transit module for Crew Dragon and a Lander, put both up on a pair of Falcon Heavies - AND DO A REAL LUNAR MISSION. And by then the FH will already be crew rated, eliminating that first flight danger on SLS. Let's face it SLS is Sen Shelby's pure pork program to keep a bunch of shuttle worksrs employed building a dysfunctional system that's far too expensive to be useful
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Boy, that is a STUPID idea. (Score:5, Informative)
Good thing that's not what they're actually doing.
If you read the actual GAO report, it doesn't say the rocket costs twenty-three billion. That's the cost of "the first planned SLS flight, the ground systems for that effort, and the first two Orion flights." In other words the costs to meet certain early program milestones, including costs which should properly be amortized across the lifetime of the rocket and crew vehicle.
The actual per launch cost of just the SLS system is supposed to be about $500 million, or 2% of the $23 billion figure.
That's still a lot of money. Even if you go with expendable costs of half a billion, and billions for the whole mission for sure, well, it's a lot of money just to prove you still have big balls. Not that that's completely unimportant, but I'd like to know what the manned component does for the mission besides make it more complex and expensive and therefore a more impressive demonstration of our manhood.
Missed opportunity.... (Score:4, Interesting)
Wouldn't it be better ... (Score:4, Insightful)
For $23 billion you could build a HUGGGE wall (Score:3)
Why waste all that money to go to the moon when for the same amount you could build a really nice wall here on earth (the best wall ever)... the moon is a loser.
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Not really. The wall is estimated at $25B and will doubtless end up far more expensive than that after various lawsuits are sorted out and they learn that smugglers dig holes and decide to make the wall a hundred feet deep.
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Man, the Chinese will be soooo jealous when they look down upon Earth from their moon base and see that our wall is more beautiful than theirs.
Go Fever? I hope not (Score:2)
For everyone's sake. Putting unmanned vehicles into orbit with test loads is one thing, but loading up an untested booster with people and then sending them on a field trip round the moon is another.
Remember Apollo 1. Remember Challenger. Remember Columbia. Go fever has a nasty butcher's bill that we pay every time this happens.
Re: Who cares? (Score:2)
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I forget, what are we going to Mars for?
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Sending people to Mars is not a very cost effective way to do science. For the same money you'd be able to send dozens of unmanned probes. Granted, they work slowly, but they don't get tired, and can spend years on the Martian surface without food, oxygen and water. They also don't have to come back.
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Mars is a pretty terrible candidate for colonization. Both Titan and Venus have better prospects as do asteroid bases.
While I don't think Mars is the best candidate, I would have to disagree that Venus is better. The mean surface temp on Venus is 462C. Also the mandate NASA receives is not to colonize asteroid bases. It is to colonize Mars.
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I forget, what are we going to Mars for?
For science.
There is no loftier goal in all the heavens.
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I'd love to see your proposal for launching water from the moon to Mars for less than $7k per kilogram. Include all allocation of labour, all feedstocks production, and all consumables, including system maintenance.
The reason we launch from the Earth is Earth is where our industrial production infrastructure is. And even if you have to import just a couple percent to the Moon of the mass that you could launch from the M
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I'd love to see your proposal for launching water from the moon to Mars for less than $7k per kilogram. Include all allocation of labour, all feedstocks production, and all consumables, including system maintenance.
What is the cost of launching from Earth? Depending on the rocket [quora.com] it could be $20K per kg for Atlas V to LEO to Falcon Heavy for a mere $1700 per kg. However that is the mere cost of getting to orbit. Most of the fuel is spent just to achieve orbit. Only a fraction of the fuel is left for the journey to Mars.
Also the proposal is not to launch water: it is to separate water into hydrogen and oxygen on the moon base, both of which could be used for fuel. By now means is the proposal an easy one. However it i
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However it is cheaper than launching directly from Earth.
You conveniently leave out the mass of the fuel station on the Moon that has to be launched from Earth, and gently landed on the Moon. Why don't you add that back in, and redo your calculations...
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Doesn't matter. If fuel is your payload, then you're paying ~$2k/kg for fuel in orbit. You don't burn payload after all. You then use that payload to refuel a second vehicle already it orbit. Doesn't matter if it takes 100 flights to bring up enough fuel, the cost/kg doesn't change.
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"all the water"? "used as fuel"? Um, I think I woke up in a parallel dimension were the insane are running things?
Some of us read up on current space technology. [space.com]
You do understand that water is composed of hydrogen and oxygen atoms which are currently being used a rocket fuel right?
No, SLS Is Going to Be Moth-Balled (Score:2)
Hijacked! (Score:5, Insightful)
Since that was a pretty lame and useless comment, I'm high jacking it to harp on my favorite space exploration related issue.
The future is not in chemical rockets. Period.
The future is in a space SHIP. Not a throw away tin can, or a floating log cabin like ISS.
An actual ship consists of...
1. A very powerful and long lasting power source. Think naval reactors or other self contained, compact reactors. We are talking 80 megawatts of power or more. The more the better.
2. Indefinitely sustainable environmental system. So recycling everything from your breath to last night's dinner you just finished processing.
3. Magnetic Shielding. People poo poo that, but it has been modeled [universetoday.com]
4. "Artificial" gravity. Actually, a huge centrifuge for the living/working quarters.
5. Lastly...engines. Banks of ion engines, the infamous and yet to be proven EM drive, or who knows what else.
All of these things are within our reach and $23 billion would go a long way towards bringing some to reality.
Once this is achieved, exploration is a matter of packing up the food and drinks and heading out. But we need to think long term (i know, I know) instead of to the latest publicity stunt.
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Robots should be part of it for the dangerous work but we need to send people too. What's life without risk? There's no shortage of volunteers willing to risk all for the opportunity. I'd like to see a serious effort to build a serious ship designed for system exploration that would hold at least a dozen people and sustain them for 10 years. To go to Mars and other places and orbit there and conduct experiments and explore. It's crazy that we put people on the moon over 4 decades ago and haven't done s
Re:Hijacked! (Score:4, Insightful)
1. A very powerful and long lasting power source. Think naval reactors or other self contained, compact reactors. We are talking 80 megawatts of power or more. The more the better.
Besides what the AC said about mass, you're talking about a 80 MW steam engine in space, you need water and you need a huge heat sink for a nuclear reactor, which is actually just a steam engine.
4. "Artificial" gravity. Actually, a huge centrifuge for the living/working quarters.
You might be unpleasantly surprised at how big a centrifuge has to be to generate a decent amount of centripetal force close to equally over the average persons 6 feet as well as to keep the sideways forces to a minimum.
5. Lastly...engines. Banks of ion engines, the infamous and yet to be proven EM drive, or who knows what else.
See number 1, how the hell are you going to power it as steam engines don't work that well in space.
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Maybe $23 billion could answer these questions.
I don't believe not knowing the answer has ever stopped us from trying.
Someone will try. As America cedes the technological high ground to other countries, other countries will take up the relay.
We'll be in a closet selling our hats to each other and pretending to make money.
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The questions were already looked into back in the '60's, the math is pretty basic. Basically for a reactor in space, you need a heat dump and all that works in space is a radiator. I don't know the math but I'm pretty sure a radiator that can dump 80 MWs of heat would be very big. Same with a centrifuge, though there you can take shortcuts such as having 2 capsules connected by cable spinning around a central point or better connected to a central object such as a booster.
It's engineering on a very large s
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Maybe $23 billion could answer these questions.
Nonsense! For $23 billion we could have another F35 instead, and run it for two years.
PS: Where would this "ship" sail to...?
Re: (Score:3, Insightful)
You won't find many people in the space community who disagree with you - these are all desirable goals. Sadly I think they're pipedreams for the foreseeable future.
1. Think naval reactors or other self contained, compact reactors.
Anything containing the word "nuclear" is a non-starter for political reasons. Sure we all want it and we understand that it can be safe, but it's still a non-starter until some non-western country does it - then western governments might take more of an interest.
2. Indefinitely sustainable environmental system.
I refer you to Biosphere2. AFAIK there has been very little progress since then tow
Re: (Score:2)
Understood.
Chem Rockets will still have their place until other as yet un-imagined left methods are in place.
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If NASA had such an alternate heavy-launch
Forget humans - send Trump instead (Score:5, Funny)
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That's more up Putin's [mirror.co.uk] alley, but maybe he could convince Trump to go with him.
Re:We are finally getting over (Score:5, Insightful)
Could you describe to me what is the "Obama space malaise"?
Obama didn't want SLS. It was congress that mandated it. And I'm in agreement: SLS is a giant unfunded mandate. "Let's build a rocket that will be way too expensive to make significant use out of, and which we won't have the budget to use often enough to make reliable or at all cheaper".
You don't make mandates that you're not going to fund. So much of congressional NASA mandates have been make-work programs, trying to justify keeping Apollo and Shuttle-era facilities open - the cost of keeping those facilities open inherently making anything that they do very expensive. It's no mystery that they need to cut back and streamline their operations to be competitive. But they're not allowed to.
Honestly, I'd like to see NASA become in many ways NACA again. An science agency with a focus on advanced research projects that help improve aerospace technology and understanding in ways that others can make use of. Now, exploration is in many ways part of that. But "NASA as a rocket manufacturer" strikes me as akin to the government running a passenger jet manufacturer or the like. I see the current situation as totally backwards - why should NASA be redoing the tech of the 1960s, while private companies are the ones doing innovations like first stages that return to pad for reuse? It should be NASA developing new technology and the private sector exploiting it.
And this was the approach that the Obama administration was pushing for, with the very successful COTS program. There are many things I have to fault it for, but this is not one. I mean, seriously, how weird is it that Republicans are pushing for things to be run by a big government agency that does everything internal, and Democrats pushing for greater privatization and outsourcing? ;)
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And this was the approach that the Obama administration was pushing for, with the very successful COTS program. There are many things I have to fault it for, but this is not one. I mean, seriously, how weird is it that Republicans are pushing for things to be run by a big government agency that does everything internal, and Democrats pushing for greater privatization and outsourcing? ;)
For those that do not know the answer to Rei's question, the answer is: Pork Barrel
You know, they thing the politicians of both sides have you bent over as they whisper sweet lies in your ear.
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The Obama space malaise was Obama killing the Shuttle
Obama did not kill the shuttle. Bush killed the shuttle.
and Project Constellation and not providing an adequate replacement.
Bush designated Constellation to replace the shuttle, but did not appropriate funds to build it. Bush also started the Commercial Access to Space Station program, which funded the development of the SpaceX Falcon-9 and the Orbital Cygnus.
Obama commissioned a study of the Constellation program, the Augustine Commission, which concluded that Constellation should either be fully funded or else cancelled (and pointed out that there was no little of Cong
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The Senate Launch System is an adequate replacement for the Shuttle, it will waste almost as much taxpayer money, but at least be able to lift crews out of LEO.
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The Cold War is back. The space program was in large part a showoff of our ability to build rockets and send them to a precise location (a.k.a. ICBMs). It was the same in Russia.
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Imagine how much real spaceflight could be done with the money that NASA wastes on outreach and Climate Change study.
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We need to fund Climate Change studies so we can Terraform the Earth next century.
check two boxes at the same time (Score:2)
It's not like anybody wants the stuff right now.
Never mind that coal is inflammable...