Don't forget the only survivable crashes are at oblique angles to
the wall, minimizing the negative G's.  Any similar crash from the 
air would require no obstacles on the ground, and a similar oblique
angle to the ground on contact.  If you require this, you might as well
put a runway there.

Dan

In a message dated 5/29/03 12:06:40 AM, [EMAIL PROTECTED] writes:

<< Having watched the Indy 500 this past weekend including the occasional
220+ mph (100+ m/s) crash, and then also considering the area to unit
mass of SSTO vehicles and thus its terminal velocity (quick back of the
envelope shows 110 m/s as reasonable), I am wondering if a VTVL vehicle
with engine out on (crash) landing can be designed to practically
disintegrate while the crew/passenger compartment remains intact and the
passengers walk away.

Dave >>

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