Bob Moore wrote:

It is probably not "flutter" that sets the high speed limit, but
rather "critical Mach bufett". Yes, even a glider has a Mmo but
no mach meter to indicate it, so an equivalent TAS becomes the limit.

The typical Vne for gliders is around 150 knots. Pretty low for mach
buffets.

If you want to see what flutter is, look he
http://www.dg-download.de/Videos/dg-...terversuch.mpg

Stefan