At 11:57 AM Saturday 10/9/04, Dan Minette wrote:
----- Original Message ----- From: "Travis Edmunds" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, October 09, 2004 11:25 AM Subject: (no subject)
> I don't know if this has been posted to the list before, or if any of you > have already seen it. If not, then enjoy.
I think that this program has some real transition problems. I took a comet (1 g/cc at 51 km/s) with a 1 deg incident angle. When the projectile diameter is 488 m, the pressure pulse is too small to notice. When it is 488.1 m, we find:
<quote> The air blast will arrive at approximately 332 seconds. Peak Overpressure: 53400 Pa = 0.534 bars = 7.58 psi Max wind velocity: 104 m/s = 233 mph Sound Intensity: 95 dB (May cause ear pain) Damage Description:
Multistory wall-bearing buildings will collapse.
Wood frame buildings will almost completely collapse.
Glass windows will shatter.
Up to 90 percent of trees blown down; remainder stripped of branches and leaves.
<end quote>
Boy, that extra 0.02% makes quite a difference!
-- Ronn! :)
"Earth is the cradle of humanity, but one cannot remain in the cradle forever." -- Konstantin E. Tsiolkovskiy
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