I have heard that a man can fall faster than the speed of sound, and survive, by jumping from 36,000 meters; a free fall that, it seems, lasts ten minutes after the jump. Is it true?
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Update (15 Oct 2012): Definitely, yes - 372.8 m/s, or Mach 1.24, Yes, almost certainly, though none have yet (7 Oct 2012) in any well-published verified account.
From http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=562 That is 274 m/s at some point during a descent from 31333 m to 5333 m altitude.
From http://en.wikipedia.org/wiki/Speed_of_sound From this graph we can see that if you start at 36000 metres, when you have fallen 16000 metres to 20000 metres height, the speed of sound is 295 m/s. Kittinger's maximum speed was 274 m/s at unstated altitude. It seems plausible that someone might be able to travel 7.6% faster oriented head down with no stabilising chute. There are reports that say Kittinger in 1960 reached supersonic speeds - e.g. Airforce Magazine - but in a BBC video (at 02:10) Kittinger says he was "very nearly supersonic"). |
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Yes!
The whole thing is part of Red Bull Stratos project. Highlights video is available on YouTube, there will be the National Geographic documentary "Space Dive" released later on. |
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