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Astronauts told to return to ISS after sheltering over air leak repairs
211–220 of 283 posts
Re: Astronauts told to return to ISS after sheltering over air leak repairs
#212Maybe someone who knows more about the ISS than I do can answer this: Naively, I would assume that there are airlocks between the different sections of the ISS. I would also assume that they would close these airlocks while doing the kind of work they are doing to repair the leaks. So, assuming I'm right (and my assumptions might be wrong,) why do the astronauts need to shelter?
If things go wrong, they're already in the vehicle supposed to bring them back. It might be upsetting to be 3 locked doors away from your best way to come back home
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Re: Astronauts told to return to ISS after sheltering over air leak repairs
#213Earlier quoted context omitted.
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I really detest Musk but Dragon has had a really good track record.
Falcon 9 is also the most successful vehicle ever flown.
The modern zeitgeist of not liking someone in one area so now everything associated with them must be bad is insufferable.
Re: Astronauts told to return to ISS after sheltering over air leak repairs
#214Can't they just get things out of the module and paint it fresh? Maybe with some special paint, or with several layers of a paint? Obviously they can't, it looks like an obvious solution they couldn't have missed. But I wonder why it is impossible to do.
For every complex, difficult and hard problem, there is a simple, easy and wrong solution. Paint obviously is not the right tool for making seals air tight.
> For every complex, difficult and hard problem, there is a simple, easy and wrong solution.
> Paint obviously is not the right tool for making seals air tight.
So my obvious solution is obviously too obvious to be right, and obviously the right solution is not obvious.
The sad thing, is you are just reiterating what I've said already, without providing any useful answer. "Paint obviously is not the right tool" is a statement that not just not obvious for me, it looks simply wrong. They search for microcracks and use a sealant to seal them. Sealant is not a paint obviously, but in the same ballpark.
Re: Astronauts told to return to ISS after sheltering over air leak repairs
#215Earlier quoted context omitted.
A top (arguably, the top) metallurgist who studied previous failed parts told me it's corrosion of the Russian alloy used. Corrosion is a hard problem in living quarters (ie moisture and salt) in space (sealed with no gravity)
It seems as though the leaks are always in the Russian section? Perhaps this is why. Humans are the weak link. Damn breathers.
1980s Soviet metallurgy isnt known for corrosion resistance. Now the whole skin is made of that metal.
Don't forget the module we're talking about was built in the 80s originally intended for MIR 2. It's been in service since 2000.
Re: Astronauts told to return to ISS after sheltering over air leak repairs
#216Re: Astronauts told to return to ISS after sheltering over air leak repairs
#217Re: Astronauts told to return to ISS after sheltering over air leak repairs
#218Earlier quoted context omitted.
Why did you feel the need to post this comment?
>Why did you feel the need to post this comment? Maybe parent feels like rocket science is a field that should have few launch failures? I can't give you a quantitative answer since I'm usually focused on new research rather than what company/nation did said research... but their stuff does seem to blow up on the launchpad more often than NASA's :-)
Trivia question. When did NASA last launch a rocket not built by a commercial entity
Re: Astronauts told to return to ISS after sheltering over air leak repairs
#219Earlier quoted context omitted.
That sounds weird. They write "Nasa" mid-sentence too, yet keep other acronyms (ISS) intact.
Some style guides distinguish between an acronym (Nasa, say the word as it's written) and initialism (ISS, say each letter)
What happens if there is disagreement about whether something is an acronym or initialism? For example, Europeans usually treat ESA as an acronym and US Americans as an initialism. I just searched the BBC and it is inconsistent, sometimes ESA, sometimes Esa. Perhaps representing their own uncertainty.