twisted,
in addition, above a certain altitude the air will start acting as separate particles rather than a fluid. I e sound waves will not propagate - no sound. They ran into this with some high altitude X series aircraft IIRC...
[Edit] Oh, and this of course meant that, for once, the "lift is created by air molecules bouncing off the bottom of the wing like marbles" finally got to be right. Once.
Nothing is ever simple! If it is, it ain't aviation!
Cheers,
/ft
[This message has been edited by ft (edited 30 June 2001).]