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PostPosted: Mon Oct 15, 2012 9:02 am 
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estimated maximum speed Mach 1.24/833.9 mph
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Extreme athlete Felix Baumgartner landed gracefully on Earth after a 24-mile jump Sunday from the stratosphere in a daring, dramatic feat that officials said made him the first skydiver to fall faster than the speed of sound.

Baumgartner came down safely in the eastern New Mexico desert about nine minutes after jumping from his capsule 128,100 feet, or roughly 24 miles, above Earth. He lifted his arms in victory, sending off loud cheers from jubilant onlookers and friends inside the mission's control center in Roswell, N.M.

"When I was standing there on top of the world, you become so humble, you do not think about of breaking records anymore, you do not think of about gaining scientific date. The only thing you want is to come back alive," he said after the jump.

Brian Utley, a jump observer from the International Federation of Sports Aviation, said preliminary figures show Baumgartner reached a maximum speed of 833.9 mph. That amounts to Mach 1.24, which is faster than the speed of sound. No one has ever reached that speed wearing only a high-tech suit.

Baumgartner says that traveling faster than sound is "hard to describe because you don't feel it." With no reference points, "you don't know how fast you travel," he told reporters.

"Sometimes we have to get really high to see how small we are," he said.

The altitude he leapt from also marked the highest-ever for a skydiver. Organizers said the descent lasted just over nine minutes, about half of it in free fall. Utley said he traveled 119, 846 feet in free fall.

Three hours earlier, Baumgartner, known as "Fearless Felix," had taken off in a pressurized capsule carried by a 55-story ultra-thin helium balloon. After an at-times tense ascent, which included concerns about how well his facial shield was working, the 43-year-old former military parachutist completed a final safety check-list with mission control.

As he exited his capsule from high above Earth, he flashed a thumbs-up sign, well aware that the feat was being shown on a live-stream on the Internet.

During the ensuing jump -- from more than three times the height of the average cruising altitude for jetliners -- Baumgartner was expected to hit a speed of 690 mph. He was believed to have reached speeds that exceeded 700 mph.

Any contact with the capsule on his exit could have torn his pressurized suit, a rip that could expose him to a lack of oxygen and temperatures as low as minus-70 degrees. That could have caused lethal bubbles to form in his bodily fluids.

But none of that happened. He activated his parachute as he neared Earth, gently gliding into the desert east of Roswell and landing without any apparent difficulty. The images triggered another loud cheer from onlookers at mission control, among them his mother, Eva Baumgartner, who was overcome with emotion, crying.

He then was taken by helicopter to meet fellow members of his team, whom he hugged in celebration.

Coincidentally, Baumgartner's attempted feat also marked the 65th anniversary of U.S. test pilot Chuck Yeager successful attempt to become the first man to officially break the sound barrier aboard an airplane.

At Baumgartner's insistence, some 30 cameras recorded the event Sunday. Shortly after launch, screens at mission control showed the capsule as it began rising high above the New Mexico desert, with cheers erupting from organizers. Baumgartner could be seen on video, calmly checking instruments inside the capsule.

Baumgartner's team included Joe Kittinger, who first attempted to break the sound barrier from 19.5 miles up in 1960, reaching speeds of 614 mph. With Kittinger inside mission control Sunday, the two men could be heard going over technical details during the ascension.

"Our guardian angel will take care of you," Kittinger radioed to Baumgartner around the 100,000-foot mark, and noted that it was getting "really serious" now.

An hour into the flight, Baumgartner had ascended more than 63,000 feet and had gone through a trial run of the jump sequence that will send him plummeting toward Earth. Ballast was dropped to speed up the ascent.

Kittinger told him, "Everything is in the green. Doing great."

As Baumgartner ascended in the balloon, so did the number of viewers watching on YouTube. Nearly 7.3 million watched as he sat on the edge of the capsule moments before jumping. After he landed, Red Bull posted a picture of Baumgartner on his knees on the ground to Facebook, generating nearly 216,000 likes, 10,000 comments and more than 29,000 shares in less than 40 minutes.

On Twitter, half the worldwide trending topics had something to do with the jump, pushing past seven NFL football games.

Among the tweets was one from NASA: "Congratulations to Felix Baumgartner and RedBull Stratos on record-breaking leap from the edge of space!"

This attempt marked the end of a five-year road for Baumgartner, a record-setting high-altitude jumper. He already made two preparation jumps in the area, one from 15 miles high and another from 18 miles high. It also was the end of his extreme altitude jumping career; he has promised this will be his final jump.

Baumgartner has said he plans to settle down with his girlfriend and fly helicopters on mountain rescue and firefighting missions in the U.S. and Austria.

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PostPosted: Mon Oct 15, 2012 9:09 am 
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I watched it live, it was pretty impressive.

I had this playing through my head the whole way down.



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PostPosted: Mon Oct 15, 2012 11:29 am 
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I havn't been following this closely.

I know he landed using a fairly traditional parachute...

How did he slow from 800+ MPH to a speed safe enough to deploy his chute?


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PostPosted: Mon Oct 15, 2012 11:32 am 
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He pulled the parachute from pretty high up. Also, he wasn't going 800+ MPH when he pulled it. His max speed was 740 MPH and that was before he hit any real wind resistance.


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PostPosted: Mon Oct 15, 2012 11:35 am 
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I'd like to know how he overcame (what I always understood to be) the problem that high altitude plummets have, and that is you eventually begin spinning and thus unable to pull your arms back toward your body.

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PostPosted: Mon Oct 15, 2012 11:36 am 
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According the link above, and most of the headlines I've seen, he was going 830+ MPH at some point during the decent.

I was just curious how he slowed down to a point where he could safely deploy the chute..

"wind" resistance ?


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PostPosted: Mon Oct 15, 2012 11:40 am 
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gotta remember that terminal velocity decreases as you get lower in the atmosphere (Greater atmospheric density=greater wind resistance)


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PostPosted: Mon Oct 15, 2012 11:44 am 
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Midgen wrote:
According the link above, and most of the headlines I've seen, he was going 830+ MPH at some point during the decent.

I was watching it live and he never went past 740MPH on the meters they were showing.

Midgen wrote:
"wind" resistance ?

The atmospheric density is so light at the point he jumped, that's why he was able to break the sound barrier. Once he hit normal levels of pressure, he slowed down to what would be normal terminal velocity.


Numbuk wrote:
I'd like to know how he overcame (what I always understood to be) the problem that high altitude plummets have, and that is you eventually begin spinning and thus unable to pull your arms back toward your body.

He was tumbling head over heels for almost a minute before he managed to stabilize himself.


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PostPosted: Mon Oct 15, 2012 1:00 pm 
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Air resistance, not wind resistance.

Air resistance is the fluid friction from the environment. That's you banging against air particles and losing kinetic energy in the collision.

Wind resistance is movement of the environment you're traveling in. It's like you running on a conveyor belt. You can run at 6 miles per hour with respect to the belt, but since the belt is also moving at 6 miles per hour in the other direction, a third party observer sees you running in place. For the jumper to encounter wind resistance, it would have to be blowing upward. While that's possible, it does not effect his speed relative to the air around him (relevant for breaking the sound barrier), only his speed relative to the ground (not relevant for breaking the sound barrier).

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PostPosted: Mon Oct 15, 2012 1:10 pm 
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The funny part about jumping is that the sensation of freefalling ends as you stop accelerating. Also, any shockwave you'd generate by going supersonic would be "unheard" by the object the sound is propogating from. For such an extreme feat, I imagine there was relatively little drama than intuition might lead you to believe.

Also note that it's easier to break to sound barrier at altitude because the lower air density decreases aerodynamic drag and lift and the speed of sound in an ideal gas is proportional to the square root of the temperature.

Still, I've long maintained that Joe Kittinger's original descent is the most extreme thing human has attempted. I'll have to revise this sentiment.

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PostPosted: Mon Oct 15, 2012 2:18 pm 
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Numbuk wrote:
I'd like to know how he overcame (what I always understood to be) the problem that high altitude plummets have, and that is you eventually begin spinning and thus unable to pull your arms back toward your body.

Didn't he use a small stabilizing chute?


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PostPosted: Mon Oct 15, 2012 3:05 pm 
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Timmit wrote:
Numbuk wrote:
I'd like to know how he overcame (what I always understood to be) the problem that high altitude plummets have, and that is you eventually begin spinning and thus unable to pull your arms back toward your body.

Didn't he use a small stabilizing chute?


That was there as a precaution and he almost used it. However if he had popped it he would not have broken the sound barrier.


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PostPosted: Mon Oct 15, 2012 4:46 pm 
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I kind of figured that from his perspective, he probably wouldn't have felt much. Kittinger said something to the effect that when he stepped out of the capsule, he didn't feel like he was moving at all, just kind of hanging there.

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