brokndodge":21hrzs6v said:
Windbourne":21hrzs6v said:
brokndodge":21hrzs6v said:
i voted worth every penny even tho the truth is a fourth answer: it's worth it, but, i wish nasa had been just a tad bit more responsible with the money.
as an aside, why would we let $100 billion burn up in the atmosphere? could the thing not be boosted to L1 as a parking spot till someone figures out how to get some use out of it?
Please give examples of how you think that NASA was irresponsible with the money?
I'm going to have to do a search and see if I can find a detailed listing of accounts for ISS or NASA in general. I can not directly respond with specifics. I just can not see how that much money could have been spent on the project. For that matter, I can't figure out how the shuttle program can cost as much as it does. You do offer a good point tho, if I'm going to keep asking these questions, I had better dig around and find some specifics to back them up.
However, Windbourne, you have some pretty extensive knowledge of the space program. Do you think it would be possible to boost the ISS to a parking spot around GEO or L1 when it's mission is ended? I am having a lot of difficulty with the idea of letting $100 billion burn up in the atmosphere.
Oh, there are others here with much better knowledge of space systems (though many of them also have vested interest, so take it with a grain of salt). I simply worked on one project (Mars Global Surveyor), have worked at Boeing, grew up in air force/airlines and have been a fan of NASA as well as private space program like many others here.
Do I think that it would be POSSIBLE to boost it. Sure. The question is what would you gain by doing so? You have already said that it is at EOL. Right there, that means that the canisters are shot, the life-support system is shot (particularly, the radiators), the solar cell systems are shot, and finally, the backbone is shot. If so, then if we do not have a small refinery up there (which really is needed), then the clear choice is that you burn it up to avoid other collisions.
Now, with that said, I suspect that by 2020, we will opt to drop the canisters (or move them to a higher orbit because we have a refinery), and replace these with BA's or ILC Dovers. The reason is that we can use that metal truss and various parts on it. It is a nice way to build a large space platform. I can also see us replacing the current solar wings with new and improved ones. Assume that we do not do that. Then I suspect again, we throw away the canisters, the radiators, add multiple wings of solar cells, and then send the unit into GEO. From there, it serves as a solar power station beaming energy to tugs, sats, etc for another 30-50 years.
I seriously doubt that we will de-orbit all of it. There are too many good parts to it that will last 30-50 years.
HOWEVER, if you think that it is worth while sending the whole unit up to GEO, well, I really agree with the rest.
First off, it have had multiple decades of use (from 2000-2020 at the earliest). The Mir was in HORRIBLE shape when it was de-orbited. It had had fires, a serious fungus issues, the solar cells were torn, and the electrical system had many issues. The fact is, that space really is one of the hardest environments to be in. Our CPUs in space costs anywhere from 10K to 100K EACH. And typically, they are not expected to last more than 10-15 years due to radiation bombardment.
Second, you really do not want to be in a thin metal can. When struck by radiation, it will slow it down SOMEWHAT, but will induce a bunch more radiation, that scatters all over (called scatter radiation). Imagine changing a high-speed bullet into a fragmented cannon ball. It will actually hit a person more often, then not.
Third, given the choice of living at LEO or at GEO, or even the moon, I would take the moon. Best protection, resources, etc. HOWEVER, second would come LEO. We are talking a massive improvement in radiation protection.
Finally, the question should be, what would be gained by working at GEO? There is no advantage until we have cheap LEO access and have a way to protect ourselves from the radiation.
Now, it IS advantageous to place a small stocked station at L1, as a safety place or even a transfer to different vehicles, but a BA-330 could do that job nicely. In addition, it would be MUCH cheaper than the ISS.