After many fears and rejections, and despite the thickening of the front part of his protective helmet, he safely skydived from a height of 38.5 kilometers
http://www.youtube.com/watch?v=HqP8q5I1AHQ
Austrian parachutist Felix Baumgartner landed safely today (October 14, 2012), and waved to the spectators. Photo: Credit: Red Bull Stratos
An Austrian parachutist specializing in skydiving, Felix Baumgartner named after him, achieved several records during his jump from the stratosphere. Baumgartner jumped from a height of approximately 38.5 km above the earth and now holds the world record for the highest jump, the fastest jump, and the highest manned flight in a hot air balloon. He also broke the speed of sound, when he gained a speed of 1,173 km/h during his dizzying fall.
The previous holder of all these records is retired Air Force Colonel Joe Gittinger, 84, who made a similar jump, but from a lower height, in the 22s. He was also Baumgartner's coach and the jump commentator on television. He encouraged the jumper with warm words of encouragement during the ascent in the hot air balloon to the height from which the jump was made. He also helped the jumper make sure he didn't forget a single detail. The only Keatinger record that Baumgartner has not broken is the longest free fall. The parachute today lasted four minutes and XNUMX seconds.
In the video taken during the descent, Baumgartner was breathing heavily as he climbed to the edge of the capsule that was attached to the balloon.
Just before the jump, as he looked at the reflection of the earth below him, Baumgartner said: "Sometimes you have to climb really high to see how small you are." Then he took a headlong jump off the end of the capsule.
Infrared cameras first picked up a small white dot falling from the sky, and quickly Baumgartner's suit was also visible. Then he went into a spin, but managed to steady himself and fall into a perfect free fall that brought cheers in the operation control room.
Baumgartner was also heard conversing throughout the free fall, but he was unable to complete any words. At some point his face shield fogged up, which was also a problem during the climb inside the capsule. For some time during the climb, there were discussions by those who called to stop the jump due to the face shield problem, but after arguments between Baumgartner and his team members, a decision was made to continue with the jump.
When the spectators saw that the chute was fully opened, Kittinger reported to the jumper in contact: "I couldn't have done it better myself."
While the main goal of the jump was to break records, Baumgartner's team says that it was also a great victory for science, when it gathered valuable information that will make it possible to improve the safety of spaceflights and help allow spaceships to be abandoned in case of danger by parachute.
In this context, the Tel Aviv University spokeswoman sent the response of Prof. Nir Shabiv from the Rakah Institute of Physics at the Hebrew University, who specializes in astrophysics, space and cosmology: "It is absolutely possible to break the speed of sound and survive when jumping from a height of 39 km, if the stuntman does not spin while the jump This is an altitude where the particle density is high enough so that the temperature around the stuntman will not burn him, as long as he is in a protective suit. Despite this, at a higher altitude, a much higher speed is reached in the fall, and as a result of the shock wave, the sparse particle density and the temperature of the surrounding air simply burn up. "
"Hence, the achievement for the time being is not used by science and cannot serve astronauts in the future, since the height at which spaceships are in danger is in the area of a hundred kilometers above the earth, where it is impossible to jump without burning. Usually when spacecraft reach an altitude of 40 km they are out of danger and land safely, so astronauts will not abandon the spacecraft at this altitude anyway. Of course, the achievement itself is similar to conquering Everest in terms of stretching human boundaries and realizing one's curiosity, and this is of great importance in itself."
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It is not accurate to say that we have reached "the edge of the atmosphere". The air there is indeed thin, but it continues for many tens of kilometers (at least 80 kilometers in a standard atmosphere model).
The balloon will not explode as it rises. A balloon can also be in outer space. All you have to do is make sure that the air pressure in the balloon is not too high.
This was already done in the early 60s. The first communication satellite Echo 1 - was an inflated balloon made of mylar that orbited at an altitude of about 1500 km.
Another point - above a certain height, the temperature increases with height!! And the speed of sound depends on the temperature of the air - note that it reached Mach XNUMX at a very high speed.
In my opinion the thin air is easy to compress and compression creates heat like an air conditioner compressor.
Another thing you can't get out of the atmosphere with a balloon 1 is in the absence of external pressure it inflates until it explodes. Things in nature strive to reach equilibrium and the pressure in the balloon is higher than the outside and will continue to inflate to equalize the pressures. 2 In the absence of air, the balloon will not continue but will float like a cork without direction.
But I don't understand it, it's just my hypothesis.
Answer to spring
The fact that you have reached a height of thirty or forty kilometers does not mean that you have left the earth's gravity, you are actually "floating" with a helium balloon at the edge of the atmosphere. It is similar to a diver who is on the bottom of the ocean, connects to a buoy and rises to a height of 10 km to the surface of the sea, in order to leave the earth you have to gain a very high escape velocity.
A question for my father and everyone else - if he reached so high, why is it not possible to continue using this method to go outside the atmosphere. Maybe if some small swing from an engine or a rocket.
It seems that slowly but surely it is possible to go into space and maybe we don't need all the huge rockets, etc.??
With a low density of oxygen, it is difficult to burn.
On the other hand, there is a balance because at a low density you can reach a higher speed and therefore a higher heat
Because you get down, to the areas where the density is high at high speed and therefore there is a fear of fire.
Regarding falling from a greater height:
1) Why if the particle density is lower, do they burn?
2) What does "air temperature" mean, rather higher is lower
Arid
In the middle of the parachute, he started to spin, so he may have shortened the freefall so as not to get into trouble. A possible deviation from the original plan (as far as I could track) is: he dropped from a higher altitude than the original plan (which was 36.5 kilometers).
He probably also opened the parachutes at an earlier stage because he had to brake from a higher speed.
It was amazing, I watched it live on YouTube starting at 1730 until he was on his feet on the ground.
It's strange that he didn't break the skydiving record, what else could he do? He fell from the highest.
I guess it wasn't a main goal but to show ability, and pass Mach XNUMX.
Not exactly, nevertheless the website Universe Today, which deals exclusively with space, a long-time content partner of the science website, chose to dedicate an article to it and I just translated it.
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