Text 27140, 50 rader
Skriven 2007-02-12 18:40:12 av Gary Braswell (1:123/789.0)
  Kommentar till text 27138 av John Hull (1:123/789.0)
Ärende: Challenger disaster not related to hydrogen fuel explosion
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John Hull -> All wrote:
 JH> You guys really ought to make sure of your facts before hand:


 JH>  From Wikipedia on the Challenger Shuttle disaster:

 JH> No "explosion"

 JH> Contrary to the flight dynamics officer's initial statement, the shuttle
 JH> and external tank did not actually "explode". Instead they rapidly
 JH> disintegrated under tremendous aerodynamic forces, since the shuttle was
 JH> near "Max Q", or maximum aerodynamic pressure. When the external tank
 JH> disintegrated, the fuel and oxidizer stored within it were released,
 JH> producing the appearance of a massive fireball. However, according to
 JH> the NASA team that analyzed imagery after the accident, there was only
 JH> "localized combustion" of propellant.[7] Instead, the visible cloud was
 JH> primarily composed of vapor and gases resulting from the release of the
 JH> shuttle's liquid oxygen and liquid hydrogen propellant. Stored in
 JH> cryogenic conditions, the liquid hydrogen could not have ignited rapidly
 JH> enough to trigger an "explosion" in the traditional sense. Had there
 JH> been a true explosion, the entire shuttle would have been instantly
 JH> destroyed, killing the crew at that moment. The more robustly
 JH> constructed crew cabin and SRBs survived the breakup of the launch
 JH> vehicle; while the SRBs were subsequently detonated remotely, the
 JH> detached cabin continued along a ballistic trajectory, and was observed
 JH> exiting the cloud of gases at T+75.237.[7] Twenty-five seconds after the
 JH> breakup of the vehicle, the trajectory of the crew compartment peaked at
 JH> a height of 65,000 feet (19.8 km); the breakup had occurred at only
 JH> 48,000 feet (14.6 km).[8]

Every time I post from Wikipedia here I get told its no kind of source.

I guess its ok for some and not others.

Every report I have read made a distinction over a myth about the shuttle
blowing up and it being blown up by its main tank.

I'll look it up again and post here. If I am wrong I will post that here too.

You might want to take your own advice about checking facts too.

-- 
"We are safe in our beds because rough men stand ready in the
night to visit violence on those who would do us harm."- George Orwell

"For those dreams taken, here are a few nightmares."
Written on a bomb dropped on Tora Bora.

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