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5potTurbo
3,258 posts
37 months
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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  )
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garyhun
13,969 posts
97 months
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Salgar said: screw this, I'm going for carrot cake. You're living the dream 
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CardShark
2,131 posts
48 months
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garyhun said: Salgar said: screw this, I'm going for carrot cake. You're living the dream Organic carrot cake? Nice.
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Eric Mc
67,253 posts
134 months
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Ironic - a weather balloon stymied by the weather.
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Schmeeky
3,444 posts
86 months
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Balloon layout has begun! 
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GTO-3R
1,827 posts
82 months
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Ayahuasca
16,048 posts
148 months
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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.
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Salgar
2,529 posts
53 months
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CardShark said: garyhun said: Salgar said: screw this, I'm going for carrot cake. You're living the dream Organic carrot cake? Nice. Twas a fine slice. Good moisture.
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Eric Mc
67,253 posts
134 months
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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.
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Schmeeky
3,444 posts
86 months
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Looks like we might be about to get some action, instead of pretty pictures of the sky!  ETA: for those who can't see the live stream, it says broadcast start at 17:00 GMT
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mattnunn
4,087 posts
30 months
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Hmmm.... Roswell New Mexico...
Could we be looknig at alien technology here? "Baumgartner" is that german for half man half zoidian?
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Eric Mc
67,253 posts
134 months
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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.
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garyhun
13,969 posts
97 months
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Salgar said: CardShark said: garyhun said: Salgar said: screw this, I'm going for carrot cake. You're living the dream Organic carrot cake? Nice. Twas a fine slice. Good moisture. Mnom mnom - I lurve de cake!
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Du1point8
14,242 posts
61 months
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mission resumes in 30mins...
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Condi
2,656 posts
40 months
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The website has been open at work all day - I was hoping for a nice distraction during work hours!
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BrabusMog
4,916 posts
55 months
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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
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BrabusMog
4,916 posts
55 months
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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
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JonnyFive
26,684 posts
58 months
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So we're looking at 6:30pm now?
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mini me
553 posts
62 months
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BrabusMog said: I'm afraid the literal translation is Flower-Gardner Isn't it tree gardener?
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BrabusMog
4,916 posts
55 months
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mini me said: Isn't it tree gardener? It could be, I'm pissed.
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