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Comment on The red bull guy who jumped from space what was going on with his body when him and his suit broke the sound barrier?

SuperNovaStar@lemmy.blahaj.zone ⁨3⁩ ⁨weeks⁩ ago

The “sound barrier” is not a physical barrier, like a wall. You wouldn’t come to a complete stop. It’s just the point at which you’re moving so fast that the air no longer has time to move out of the way, and so it behaves differently.

It would be really rough on your body, to be sure, but not as bad as hitting a magic wall that makes you come to a complete stop.

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Lexam@lemmy.world ⁨3⁩ ⁨weeks⁩ ago
Please site your Magic Wall sources. I think they are outdated. With current magic wall safety technology I think he would safely survive the stop.

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Patnou@lemmy.world ⁨3⁩ ⁨weeks⁩ ago
I watched the excerpts of his video but never really explained why the turning happened for a while then stopped?

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- GreenBeard@lemmy.ca ⁨3⁩ ⁨weeks⁩ ago
  How would you control your spin if there’s no air to push against? The ionosphere is so thin, it may as well be hard vacuum. until you made it to some place the air is thick enough to help control your rotation, once you start spinning, you can’t stop.
  
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  - Patnou@lemmy.world ⁨3⁩ ⁨weeks⁩ ago
    But why in the first place did he start spinning? The people they talked to were awaiting it and were suprised it didn’t come thru sooner.
    
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    GreenBeard@lemmy.ca ⁨3⁩ ⁨weeks⁩ ago
    Yeah, we’re not a regular, balanced geometric shape. Without a tether or something to help stabilize against, every marginal push or pull (like gravity, or the marginal friction of the ionosphere) will tend to send us tumbling.
    
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musicalphysics@discuss.online ⁨3⁩ ⁨weeks⁩ ago
Perhaps not a complete stop but numerous aircraft were destroyed as they tried to break the speed of sound. The air building up in front of you can in fact form a wall. We shouldn’t discount the force supplied by air. It is a pressure wave from bombs, not fire, that causes explosive damage.

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- SuperNovaStar@lemmy.blahaj.zone ⁨3⁩ ⁨weeks⁩ ago
  Oh, yeah, the forces are very intense. But it isn’t at all the same as coming to a complete stop - closer to the water hammer effect if anything (since the air becomes incompressable at those speeds). There’s also a lot of turbulence, vibration, and heat from the drastically increased air resistance.
  
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  - musicalphysics@discuss.online ⁨3⁩ ⁨weeks⁩ ago
    Correct. No complete stop.
    
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