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RedBull Stratos...Felix Baumgartner....700mph+ FreeFall

RedBull Stratos...Felix Baumgartner....700mph+ FreeFall

Author
Discussion

5potTurbo

6,047 posts

80 months

Tuesday 9th October 2012
quotequote all
Adenauer said:
5potTurbo said:
Adenauer said:
Live update here in 5 minutes.
Chop, chop!
The weather's quite good, but they are saying that it might get even better so are waiting for that to happen, no other launch time given yet but they still say it will go ahead today.

Over....
Roger.

Over.

(I just checked on their website wink )

garyhun

20,423 posts

140 months

Tuesday 9th October 2012
quotequote all
Salgar said:
screw this, I'm going for carrot cake.
You're living the dream smile

CardShark

3,122 posts

91 months

Tuesday 9th October 2012
quotequote all
garyhun said:
Salgar said:
screw this, I'm going for carrot cake.
You're living the dream smile
Organic carrot cake?

Nice.

Eric Mc

90,411 posts

177 months

Tuesday 9th October 2012
quotequote all
Ironic - a weather balloon stymied by the weather.

Schmeeky

3,785 posts

129 months

Tuesday 9th October 2012
quotequote all
Balloon layout has begun! woohoo
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GTO-3R

3,083 posts

125 months

Tuesday 9th October 2012
quotequote all
woohoo

Ayahuasca

19,826 posts

191 months

Tuesday 9th October 2012
quotequote all
Eric Mc said:
Megaflow said:
A thought that occured watching this on the news this morning, how far up do you have to go before re-entry becomes an issue?

I suspect, by the very nature of re-entry, that you'd have to leave the atmosphere totally, and therefore there is no gravity to pull you down.
I presume you are concerned about the atmospheric heat friction that is normally associated with a spacecraft or satellite re-entering the atmosphere from earth orbit (or even direct from the moon, as in Apollo and Zond missions).

Atmospheric heating is not a function of altitude. It is a function of speed.
If you climbed a tower 100 miles high - you would be in space. If you jumped off that tower and started falling towards earth, your velocity would never exceed 800 mph - and at that speed frictional heating due to the atmopshere would be almot undetectable.

If you are in orbit around the earth at an altitude of 100 miles, you will start entering the atmosphere at 17,500 mph (25.000 mph if coming back from the moon). At those types of speeds atmospheric heating is a major issue and a specially designed heat shield of some sort is required to prevent the spacecraft from burning and breaking up.
Most of the heat produced during re-entry has nothing to do with friction, and everything to do with compression. As the craft moves forwards at huge speed it compresses the air ahead of it so that it heats up - a bit like a pressure caused by a piston in a cylinder heating air/fuel to detonation in a diesel engine.

Salgar

3,242 posts

96 months

Tuesday 9th October 2012
quotequote all
CardShark said:
garyhun said:
Salgar said:
screw this, I'm going for carrot cake.
You're living the dream smile
Organic carrot cake?

Nice.
Twas a fine slice. Good moisture.

Eric Mc

90,411 posts

177 months

Tuesday 9th October 2012
quotequote all
True - it's the bow shock at the front of the re-entering object. However, the whole idea of the blunt body shape is to deliberately create that bow shock - because that protects the worst elements of the heat from impinging on the structure of the re-entering craft.

Original designs for spacecraft were often needle nosed - but they created genuine frictional heating right at the tip - which would end up destroying the vehicle.

Schmeeky

3,785 posts

129 months

Tuesday 9th October 2012
quotequote all
Looks like we might be about to get some action, instead of pretty pictures of the sky! hehe


ETA: for those who can't see the live stream, it says broadcast start at 17:00 GMT

smile

Edited by Schmeeky on Tuesday 9th October 16:32

mattnunn

11,089 posts

73 months

Tuesday 9th October 2012
quotequote all
Hmmm.... Roswell New Mexico...

Could we be looknig at alien technology here? "Baumgartner" is that german for half man half zoidian?


Eric Mc

90,411 posts

177 months

Tuesday 9th October 2012
quotequote all
Roswell has been a test area for rockets and other military systems for decades. It consists of the White Sands Proving Grounds and the Los Alamos nuclear site.

garyhun

20,423 posts

140 months

Tuesday 9th October 2012
quotequote all
Salgar said:
CardShark said:
garyhun said:
Salgar said:
screw this, I'm going for carrot cake.
You're living the dream smile
Organic carrot cake?

Nice.
Twas a fine slice. Good moisture.
Mnom mnom - I lurve de cake!

Du1point8

19,455 posts

104 months

Tuesday 9th October 2012
quotequote all
mission resumes in 30mins...

Condi

5,593 posts

83 months

Tuesday 9th October 2012
quotequote all
The website has been open at work all day - I was hoping for a nice distraction during work hours!

BrabusMog

10,626 posts

98 months

Tuesday 9th October 2012
quotequote all
mattnunn said:
Hmmm.... Roswell New Mexico...

Could we be looknig at alien technology here? "Baumgartner" is that german for half man half zoidian?
I'm afraid the literal translation is Flower-Gardner

BrabusMog

10,626 posts

98 months

Tuesday 9th October 2012
quotequote all
mattnunn said:
Hmmm.... Roswell New Mexico...

Could we be looknig at alien technology here? "Baumgartner" is that german for half man half zoidian?
I'm afraid the literal translation is Flower-Gardner

JonnyFive

27,985 posts

101 months

Tuesday 9th October 2012
quotequote all
So we're looking at 6:30pm now?

mini me

1,155 posts

105 months

Tuesday 9th October 2012
quotequote all
BrabusMog said:
I'm afraid the literal translation is Flower-Gardner
Isn't it tree gardener?

BrabusMog

10,626 posts

98 months

Tuesday 9th October 2012
quotequote all
mini me said:
Isn't it tree gardener?
It could be, I'm pissed.