RedBull Stratos. edge of space para jump

That’s a good recollection!!:)

Which is what I posted in #74…..:p

😮

Back in my army days we would take turns at the shooting range, those shooting, and those in the trench by the targets, who would indicate where the bullet struck. You could clearly hear the sonic booms of the bullets overhead. Not to mention the actual skirmishes in the operational area. The difference between a subsonic and supersonic round is unmistakable.

Yes the bullet was always a good ilustration. I remember it being used in the early days of unrestricted “booms” to explain how the intensity and the timing of the two booms varied depending on height, angle of dive or level flight, ambient atmospheric conditions and speed.

I like this image of shockwave formation… in this case a bullet.

http://www.wired.com/wiredscience/2011/06/weird-world-of-fluids/

You’d only hear the ‘boom’ as the shockwave passed over you (in this case, some time after the bullet itself passes – the shockwaves being the black lines in the form of a bow wave and smaller shocks along the bullet length.)

Now turn the picture through 90 degrees so the bullet (Baumgartner) is heading downwards… At what point will the shockwave pass over you to enable a ‘boom’ to be heard…

Yes, the air is so thin at the point of sound breakage in Baumgardner’s case, that the shockwave would be greatly reduced. In theory, if you were on a platform and he passed you by whilst doing the speed of sound at 80,000 ft you’d hear it. You’d also have breathing difficulties, exploding eyeballs and a REALLY tall platform!

Charlie, Beat you by 2,…..72.;) AND I didn’t need to Google or WikipediA either:p

Jim.

Lincoln .7

Well….I don’t think you actually EXPLAINED why….!;):):dev2:

Which is what I posted in #74…..:p

Charlie, Beat you by 2,…..72.;) AND I didn’t need to Google or WikipediA either:p

Jim.

Lincoln .7

Spike Milligan could have answered that, once upon a time:) he used to talk to them.!!!

Jim.
Lincoln .7

I thought that was Clint Eastwood?

Tony

Yer all go to this page : http://www.redbullstratos.com/ there is a link to the speed of sound explained. The speed of sound varies as a function of the absolute temperature. However since the air up there is so thin it will hardly have an effect.

Which is what I posted in #74…..:p

Yer all go to this page : http://www.redbullstratos.com/ there is a link to the speed of sound explained. The speed of sound varies as a function of the absolute temperature. However since the air up there is so thin it will hardly have an effect.

Could have a point there Charlie, Is it in Google or WikipediA?. 😉
Jim.
Lincoln.7

I don’t know..go on have a look, I shan’t tell!!

If a tree falls in the forest and no-one is there, did it make a noise? :diablo:

Spike Milligan could have answered that, once upon a time:) he used to talk to them.!!!

Jim.
Lincoln .7

Could have a point there Charlie, Is it in Google or WikipediA?. 😉
Jim.
Lincoln.7

Surely any object moving faster than the speed of sound will produce a shockwave. Is the difference here that the air was so thin at the point the wave was produced so that little or any of it would have reached the surface or have been audible?

If a tree falls in the forest and no-one is there, did it make a noise? :diablo:

I think they just went by the fact that as he exceeded the speed of sound and not having the same makeup as an aircrat that would have made a bang, my opinion is no, there would have been no bang.
But that’s just my opinion,

Jim.
Lincoln .7

One question I have about this jump. I haven’t heard anyone mention nor seen anything on this thread (so it may be a stupid question but I have to ask it).

As he went through the sound barrier, did he make a sonic bang?

Tony.

I had a PM from a member stating some failed because they were re packed when they had been wet or damp, before they were dried out completely.
True?.

Jim.
Lincoln .7

Sadly, incorrect chute deployment or malfunction has killed numbers of jumpers post-war, as well.:(

That young lads ordeal got me thinking, Why did his chutes not deploy correctly, and I also got to thinking just how many similar occasions like this happened during the War?.

It may be an old wives tale, but years ago, I seem to remember being told, that the unfortunate person, who’s chute failed to open, would be dead before they hit the ground, heart attack or something like that.
Is it the packing of the chute that was the fault, or some other reason, anyone know?, when things like this happen.
Jim.
Lincoln .7

I was just about to mention that. Ejecting from a stricken space vehicle.