Incredible!
Regarding the maximum speed attained ...
If one takes the initial height of 102,800 ft and the height at which the parachute opened at 14,000 feet, then the free fall distance is 88,800 feet. Using the formula for time of free fall in Earth's gravity (t = sqrt(2*d/G)) gives a time of 74 seconds. Then, the velocity attained is v = Gt = 2,390 ft/sec or 1,630 mph.
Because there is air resistance that speed was not reached. To include the effects of air resistance one needs to know the effective cross section of Captain Kittinger, the drag coefficient, and the density of air (which was changing as he dropped).
Depending on what one plugs in for the parameters above, folks were probably getting different numbers. That would be my guess.
Now, if the Captain had an iPhone (with its internal clock and accelerometer), then there wouldn't be any doubts about his speed.![]()
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ScottinBend Space CowboySupporting Member
There is a video of this and it is simply mind-numbing how he had the cajones to leave the gondola.
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Steve AdministratorStaff Member Articles Moderator
Mr. Baumgartner's record stood for only just over two years. I figured it would last a lot longer but it was broken today, and the guy didn't even use a capsule!
Google Executive Breaks Record With Near-Space Skydive (forbes.com)
First World Record – Exit Altitude:
Alan took off at 07:00 am MDT this morning from Roswell, NM, elevation 3673 MSL. After ascending for 2 hours and 7 minutes (1000 fpm) to a peak 'float' altitude of 136,401 feet (a unofficial record for the highest manned balloon flight), he exited at 09:09:51 MDT from an altitude of 135,890 feet (41,420 meters)—a new absolute FAI world record.
Second World Record – Vertical Speed:
In freefall, passing 100,000 feet, Alan reached a peak velocity of 822 mph,Mach 1.23 (1321 km/hr.). By comparison at the same altitude in 2012, Felix Baumgartner was falling at 809 mph and Mach 1.20 . . . however, Felix continued to accelerate . . . at 91,000 he reached his peak velocity of 843 mph, Mach 1.24. (As a further comparison, Alan was completely stable, while at the same point in time, Felix was spinning uncontrollably).
Third World Record – Freefall Distance:
Alan manually deployed his parachute after freefalling (with his stabilizing drogue) 4 minutes and 27 seconds, opening at an altitude of 12,476 feet. His total freefall distance was 123,414 feet (37,617 meters)—a new FAI World Record.
Alan landed at 09:24—14 minutes and 19 seconds after dropping away from the stratospheric balloon. His total flight time was 2 hours, 23 minutes and 40 seconds. He made a safe landing and in great condition, and of course, in high spirits—mission accomplished.
[ame="https://www.youtube.com/watch?v=-eph7pQ7k9w"]Tucson company completes record-breaking near-space dive - YouTube[/ame]-
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Crashton Club Coordinator
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N2MINI MINI of the Month
video, got to find that video.. Sounds too crazy to miss.....
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[ame=http://www.youtube.com/watch?v=Z8RRkMsHOMU]Joseph Kittinger Record Breaking Sky Dive From The Edge Of Space 102,800 ft 1960 - YouTube[/ame]
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The reported speeds are all over the map. The video reports 450 mph, the OP source says 714 mph, and this article says 614 mph:
Aviation pioneer to make special appearance at the National Museum of the U.S. Air Force
Whatever, you must step off knowing that you might not make it. -
Steve AdministratorStaff Member Articles Moderator
[ame=http://www.youtube.com/watch?v=Qw8OJJQ_hgk]Freefall - Skydive from 31km - YouTube[/ame]
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Neat!. Now I want to do that.
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Crashton Club Coordinator
Somehow jumping over Roswell New Mexico just sounds right to me. WOW!
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Best of luck to the man, this is pretty cool.
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Steve AdministratorStaff Member Articles Moderator
There was a weather delay due to wind but things are now back in motion again. Baumgartner is suited up and the very large (30 million sq ft !!) balloon is being laid out. The live camera is already on (here) but nothing to see yet other than a view of the sky over NM.
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