VNE and the "coffin corner"?

On 16 Dec 2003 18:40:56 GMT, Mark Brown
wrote:

Jim,

You hit the nail on the head in paragraph three then
confused yourself! As you climb your Stall TAS increases
however VNE TAS doesnt. So they will run into each
other at very high altitudes or at least give you a
very small airspeed envelope to operate in. It is
this fact that you have to remember. Always think
in TAS and you cant go far wrong. IAS is only a value
that we see and unless you convert it accordingly to
TAS at altitude you may as well forget it.


Thank you Mark. I think I understand it now.

Jim wrote:

It is this fact that you have to remember.

You can climb pretty high in an average glider before you "have to
remember" this. If you actually find a wave to climb that high, I guess
you rather have to remember the the boiling point of water...

Stefan