"AES" wrote in message ...
Just got our dog a new frisbee (he goes thru 'em pretty fast if we're
careless and leave them within reach after a session).

....
So, how does a frisbee fly, anyway? Another of his favorites is just a
10" diameter weighted outer rim filled in with a slightly saggy "cloth
drumhead", which visibly bulges upward 1" or so at the center into a
fair imitation of an airfoil when you throw it. I've always figured the
heavy rim kept the thing spinning and thus semi-rigid, and the forward
motion of the airfoil shape gave the lift.

It is magic! Just like flying an airplane...

These folks are trying to explain away the magic he http://mae.ucdavis.edu/~biosport/frisbee/frisbee.html

Really, it's just magic...