4 ms·

I burst into laughter reading the Russian's quotes. I love how casual the astronaut is about it! I'm no astronaut but I wouldn't be sleeping with crack in my h

by keyle 6y ago

I burst into laughter reading the Russian's quotes. I love how casual the astronaut is about it! I'm no astronaut but I wouldn't be sleeping with crack in my hull, leaking air.

calcifer 6y ago
They leak 0.3 mmHg per day and are currently at 750 mmHg. An emergency is 0.5-1 mmHg per minute. They really don't have anything urgent to worry about.
- curiousllama 6y ago
  Except loud cracking sounds followed by a gentle breeze
  - sellyme 6y ago
    If they're experiencing a breeze they might have bigger problems to worry about than a cracked hull.
- faeyanpiraat 6y ago
  Ok, so it’s a 4.5cm long crack. If an aluminum bycicle frame cracks like that, it is useful to drill holes at the end of the cracks, to stop the cracks from progressing.
lolc 6y ago
After fixing that leak they can go back to sleeping among uncharted fragments that can collide with no warning but catastrophic impact.
segfaultbuserr 6y ago
> He underscored that air loss due to the crack are insignificant. "This leak is like as if you’d drill the hull with a 0.2 mm diameter drill. I’m not sure such drills even exist in household. I had to check my collection of PCB drill bits when I was reading it, and yes, I confirm that I'm a proud owner of a 0.2 mm drill at home, it was the smallest one in the box ;-)
- nosianu 6y ago
  The existence of a drill is no guarantee that you can actually create a hole. I once was a battle tank maintenance guy and we had to replace a cover placed in front of the armor. The replacement had holes in different positions, no problem, just drill a new hole, right? An hour and a few broken drills later we gave up. No doubt there are drills that work on that armor-steel, my point is, depending on the material just any drill may not be good enough. An hour of hard work barely caused a <0.5mm "deep" scratch to appear! PS: We solved the problem by not solving it. Attaching three points instead of four was enough, de decided. That tank would never see a real battle but was only used for training anyway.
  - HeyLaughingBoy 6y ago
    True. But if it's a PCB drill as (s)he said, then it's likely either solid carbide or has a carbide tip. Hold everything rigidly enough and run that drill at the right speed and feed rate, and there's a good chance that it will drill armor plate.
    - segfaultbuserr 6y ago
      Full product catalog from the manufacturer if anyone's interested: https://www.uniontool.co.jp/assets/pdf/catalog/drill_router2020.pdf https://www.uniontool.co.jp/assets/pdf/catalog/drill_router2...
- TomK32 6y ago
  still unused?
  - segfaultbuserr 6y ago
    Still unused. The smallest bit I've used is a 0.8 mm one. Anything smaller, it's impossible to even see where you are going without a microscope.

by keyle 6y ago

I burst into laughter reading the Russian's quotes. I love how casual the astronaut is about it! I'm no astronaut but I wouldn't be sleeping with crack in my hull, leaking air.

calcifer 6y ago

They leak 0.3 mmHg per day and are currently at 750 mmHg. An emergency is 0.5-1 mmHg per minute. They really don't have anything urgent to worry about.

curiousllama 6y ago
Except loud cracking sounds followed by a gentle breeze
- sellyme 6y ago
  If they're experiencing a breeze they might have bigger problems to worry about than a cracked hull.
faeyanpiraat 6y ago
Ok, so it’s a 4.5cm long crack. If an aluminum bycicle frame cracks like that, it is useful to drill holes at the end of the cracks, to stop the cracks from progressing.

lolc 6y ago

After fixing that leak they can go back to sleeping among uncharted fragments that can collide with no warning but catastrophic impact.

segfaultbuserr 6y ago

> He underscored that air loss due to the crack are insignificant. "This leak is like as if you’d drill the hull with a 0.2 mm diameter drill. I’m not sure such drills even exist in household. I had to check my collection of PCB drill bits when I was reading it, and yes, I confirm that I'm a proud owner of a 0.2 mm drill at home, it was the smallest one in the box ;-)

nosianu 6y ago
The existence of a drill is no guarantee that you can actually create a hole. I once was a battle tank maintenance guy and we had to replace a cover placed in front of the armor. The replacement had holes in different positions, no problem, just drill a new hole, right? An hour and a few broken drills later we gave up. No doubt there are drills that work on that armor-steel, my point is, depending on the material just any drill may not be good enough. An hour of hard work barely caused a <0.5mm "deep" scratch to appear! PS: We solved the problem by not solving it. Attaching three points instead of four was enough, de decided. That tank would never see a real battle but was only used for training anyway.
- HeyLaughingBoy 6y ago
  True. But if it's a PCB drill as (s)he said, then it's likely either solid carbide or has a carbide tip. Hold everything rigidly enough and run that drill at the right speed and feed rate, and there's a good chance that it will drill armor plate.
  - segfaultbuserr 6y ago
    Full product catalog from the manufacturer if anyone's interested: https://www.uniontool.co.jp/assets/pdf/catalog/drill_router2020.pdf https://www.uniontool.co.jp/assets/pdf/catalog/drill_router2...
TomK32 6y ago
still unused?
- segfaultbuserr 6y ago
  Still unused. The smallest bit I've used is a 0.8 mm one. Anything smaller, it's impossible to even see where you are going without a microscope.