leicsmac Posted 14 October 2012 Posted 14 October 2012 Just going past 75000 feet...rate of ascent seems to be slower than the organisers would like. As a result, the lateral winds are causing the balloon to drift pretty far from the start point. Edit: winds are changing direction because of altitude, which should help.
StanSP Posted 14 October 2012 Posted 14 October 2012 didnt someone do this in the 1960's? Yeah, Kittinger. He's the one who's speaking to Bum Gardener from Mission Control in Mexico
sphericalfox Posted 14 October 2012 Posted 14 October 2012 if his suit doesn't pressurise properly, his blood will boil and he'll implode, for all the internets to see. The equalisation process will be interesting. He might not get out of the pod itself.
anotherharboroughfox Posted 14 October 2012 Posted 14 October 2012 didnt someone do this in the 1960's? Yep, and the guy who did that (Joe Kittenger) is Felix's advisor for this higher jump. Kittinger did 102,800ft and Baumgartner is aiming for 120,000ft.
marko Posted 14 October 2012 Author Posted 14 October 2012 if his suit doesn't pressurise properly, his blood will boil and he'll implode, for all the internets to see. The equalisation process will be interesting. He might not get out of the pod itself. The stream is on a 20 second delay, so if anything happens they'll just cut the feed.
Vacamion Posted 14 October 2012 Posted 14 October 2012 I don't want to put a hex on this, but Mrs Vac just saw me watching the stream of this and muttered "He's soooooo going to die"...
sphericalfox Posted 14 October 2012 Posted 14 October 2012 The stream is on a 20 second delay, so if anything happens they'll just cut the feed. The Beeb will be pissed considering the money they've put into to documenting this. Not I imagine something untoward might happen, but thems the risks.
leicsmac Posted 14 October 2012 Posted 14 October 2012 The stream is on a 20 second delay, so if anything happens they'll just cut the feed. Makes sense...would be a hell of a horrific thing if something went wrong and it was broadcast to goodness knows how many people worldwide. Edit: passing through highest altitude for fixed-wing aircraft, 85000 feet.
I am Rod Hull Posted 14 October 2012 Posted 14 October 2012 I don't want to put a hex on this, but Mrs Vac just saw me watching the stream of this and muttered "He's soooooo going to die"...
leicsmac Posted 14 October 2012 Posted 14 October 2012 The sky above him practically black now. Shows how little atmosphere is up at that altitude to refract blue light.
Deucalion Posted 14 October 2012 Posted 14 October 2012 Did they fix his boots? They weren't heating earlier.
leicsmac Posted 14 October 2012 Posted 14 October 2012 Did they fix his boots? They weren't heating earlier. Think so, but there's a potential issue with his visor not being heated either. It shouldn't have a bearing on the jump, but it might mean he'll have a bit of trouble seeing.
Deucalion Posted 14 October 2012 Posted 14 October 2012 Anyone know what the speed of sound is at 120 000 feet? Must be approaching 1000mph?
leicsmac Posted 14 October 2012 Posted 14 October 2012 Approaching two milestones: the big 100k and Kittinger's previous record of 102,800.
Tom17LCFC Posted 14 October 2012 Posted 14 October 2012 Absolute madhead! What time's he expected to jump approximately??
leicsmac Posted 14 October 2012 Posted 14 October 2012 Anyone know what the speed of sound is at 120 000 feet? Must be approaching 1000mph? Will actually be slower than speed of sound at sea level, due to compression effects. In any case they'll be using the Mach scale (ratio of airspeed to speed of sound at a particular altitude) rather than knots/mph/kph to measure his airspeed. Edit: Speed of sound will be about 690mph at that altitude (compared to around 750mph at sea level).
Deucalion Posted 14 October 2012 Posted 14 October 2012 Will actually be slower than speed of sound at sea level, due to compression effects. In any case they'll be using the Mach scale (ratio of airspeed to speed of sound at a particular altitude) rather than knots/mph/kph to measure his airspeed. Compression effects? What's that? I would prefer to know what Mach is in mph because it is easier to get a concept of how fast he is travelling. Not that Mach+ isn't impressive enough!
leicsmac Posted 14 October 2012 Posted 14 October 2012 Compression effects? What's that? I would prefer to know what Mach is in mph because it is easier to get a concept of how fast he is travelling. Not that Mach+ isn't impressive enough! Sorry, should have explained myself. As air temperature and pressure change, the way sound is compressed and travels through the air changes. Temperature, oddly enough, has a bigger effect on the speed of sound than pressure. The lower the temperature, the slower the speed of sound. Check my edited post for the speed of sound at his altitude.
Leicester_Loyal Posted 14 October 2012 Posted 14 October 2012 108,000ft up now. Won't be long till he jumps now.
Deucalion Posted 14 October 2012 Posted 14 October 2012 Sorry, should have explained myself. As air temperature and pressure change, the way sound is compressed and travels through the air changes. Temperature, oddly enough, has a bigger effect on the speed of sound than pressure. Check my edited post for the speed of sound at his altitude.
leicsmac Posted 14 October 2012 Posted 14 October 2012 Closing in on projected 'float' height of 125,000 feet. Almost time.
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