"Mike Rapoport" wrote

I always thought that the "coffin corner" was where stall speed met the
Mach
limit. I didn't think that it even applied to non-jet aircraft.

Mike

No, I think the post above yours got it pretty much right..Vne is
significant, in that it demonstrates itself by nasty things like flutter, or
control reversal. Pull back on the stick to maneuver, or slow down, and
stall, or at least buffet like hell.

It is true, however, that it is pretty tough for a non jet aircraft to get
to the coffin corner. The Exxon tiger (can't think of the guy's name) that
has been trying to get the piston altitude record, has said that he is
really close to getting into coffin corner.
--
Jim in NC