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Astronauts told to return to ISS after sheltering over air leak repairs

bbc.com

141–150 of 283 posts

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#141

Earlier quoted context omitted.

Isn't the main problem finding the hole and not what should be used to fill the hole?

They need Matt Damon, a chopped up wooden crucifix, and some silicone caulking

They need Phil Swift, "To show the powerful adhesion of flex-seal, I sawed this space station in half!"

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#142
post #80
post #64

Can'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.

You ever try to open an old paint can? Checkmate, atheist.

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#143

Earlier quoted context omitted.

Oh come on you can't be serious. Clearly this needs some JB-Weld :P

Flex Seal would be my suggestion. It works as seen on TV

"To show the powerful adhesion of flex-seal, I sawed this space station in half!"

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#144
post #80
post #64

Can'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.

Flexseal obviously

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#145
post #122
post #77

Earlier quoted context omitted.

If you mean on the outside, paints that apply well in vacuum and microgravity probably need to be developed and tested first. If you mean on the inside, it'd be a lot of time and disruption to devote to maintenance on a station that's already having to spend an increasing amount of time on maintenance instead of science. The modules have a lot of stuff that has been wired between them over the years, all that would n…

> well in vacuum and microgravity probably Wouldn't all paint works well in microgravity? If it didn't, I would think you wouldn't be able to apply it to your floor, walls, and ceiling, with the same paint.

I think it's hard to say. Water sprayed at a ceiling doesn't congeal into a ball the way water floating in microgravity does.

Paint that would fall to the ground if it didn't stick to anything on Earth, would just be floating around in microgravity. Any dissolved gasses or moisture can usually passively sort themselves out due to their differing masses, but again, not in microgravity.

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#146

Earlier quoted context omitted.

Bubble gum? Like do they chew space bubble gum that they could then smoosh in the holes? In college, we'd use toothpaste for the holes left from nails in the walls we hung up our posters with.

Isn't the main problem finding the hole and not what should be used to fill the hole?

Just spray Fix-a-Flat everywhere.

Or coat the outside with a soapy water solution.

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#147
post #87
post #64

Can'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.

yeah, why can't they just make astronauts wear goggles, then stop the fans, and tell them to squirt some superglue in the air to let it clog the hole?

Put a bit of spare sheet metal over the hole and let the pressure differential hold it down. For added safety affix a post-it not with DO NOT REMOVE written on it in all capital letters and underlined. They can even use those special zero-g ballpoint pens they spent eleventy-billion dollars inventing back during the johnson administration.

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#148

Earlier quoted context omitted.

As per submission guidelines: > Otherwise please use the original title, unless it is misleading or linkbait; don't editorialize. So, even if you use original title, once "Live Update" article changes, it might seem that submission did not use original title.

The point of the rule is to not editorialize, not to keep an always-updating title.

Given that the title was highly accurate at time of submission perhaps a moderator will update the title further but the submission seems to be inline with all the guidelines. This is actually also a case where I think it wouldn't be unappreciated to deviate a bit from the article title to something like Live Updates: Astronauts on ISS told...

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#149
post #80
post #64

Can'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.

It is not obvious to me that there is no specialized type of paint that would be appropriate.

Doing the whole module sounds like a lot of mass though.

Re: Astronauts told to return to ISS after sheltering over air leak repairs

#150
post #145
post #122

Earlier quoted context omitted.

> well in vacuum and microgravity probably Wouldn't all paint works well in microgravity? If it didn't, I would think you wouldn't be able to apply it to your floor, walls, and ceiling, with the same paint.

I think it's hard to say. Water sprayed at a ceiling doesn't congeal into a ball the way water floating in microgravity does. Paint that would fall to the ground if it didn't stick to anything on Earth, would just be floating around in microgravity. Any dissolved gasses or moisture can usually passively sort themselves out due to their differing masses, but again, not in microgravity.

Yeah, the application system is probably the tricky bit, rather than the paint.

> Any dissolved gasses or moisture can usually passively sort themselves out due to their differing masses, but again, not in microgravity.

This is a solved problem with the ECLSS system [1], required from humans releasing ~3.3 lbs of water per day, and exhaling gases that must not accumulate or form dead zones, and normal VOCs scrubbers [2] due to most modern materials releasing them.

I suspect it would be more of a "how many extra filters do we send" type problem and cycling the collected water a couple more times.

[1] https://www.sciencedirect.com/science/article/abs/pii/S13640...

[2] https://www.researchgate.net/figure/Typical-concentrations-o...

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