From: George Murphy (email@example.com)
Date: Sat Jun 07 2003 - 16:49:10 EDT
Walter Hicks wrote:
> I have some experience with light objects (chaff) dispensed from aircraft
> flying around 900 ft/sec. It only takes several milliseconds for them to
> get to ground speed.
> deceleration > 900/(3*10^-3) = 300,000 ft/sec/sec = approximately 10,000
> I'd expect foam to act somewhat similarly. Maybe not thousands of gees --
> but hundreds at least. Best assumption (for a first approximation) would
> be that the foam was at zero velocity when the shuttle struck it.
Perhaps so but we're talking about a block of foam, not something with a very
high surface to volume ratio. I should look up some numbers & an estimate the turbulent
George L. Murphy
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