Shuttle Columbia STS-107 Message Board

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Pastimes : Shuttle Columbia STS-107

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To: Yogizuna who wrote (617)	7/23/2003 2:22:47 AM
From: S. maltophilia	Read Replies (1) of 627

Continuing to beat this dead horse <g> nytimes.com <<The event that doomed the shuttle may have taken just two-tenths of a second, with the impact 81.86 seconds after liftoff. That is how long it took a chunk of foam to cover about 60 feet, between the spot on the external tank called the bipod ramp, up near the Columbia's nose, and the panel on the left wing where the chunk hit and probably punched a hole. The shuttle was at 65,860 feet, and was already traveling 2.46 times as fast as the speed of sound.>> Covering 60 feet in 2/10 second implies an average velocity of ~ 100 m.p.h, which means a kinetic energy of ~1/25 of that simulated by the cannon shots. OTOH a distance of 60 feet versus 100 feet that I was using in my previous post: Message 19088639 and an impact as simulated would require an acceleration much greater than the 80 G's I had previously calculated. I'm still puzzled by what appears to be a PR exercise on the part of NASA and hope it's not a symptom of future poor management.

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