At 08:57 AM 9/08/02 +1000, you wrote:
>The DG web site expresses serious reservations. They state that the TAS will
>have to be 450Kts ! Flutter ?
>Also that the characteristics of carbon fibre are completely untried at
>those temperatures
Having now checked the DG site it seems they are mixing up the current
attempt at 63000 feet with the 100,000 foot attempt which will be done in a
completely new glider specially designed for it.
It is very difficult to fly at 100,000 feet in steady 1 G flight in a
subsonic aeroplane. The TAS/IAS ratio is around 8.5 and critical Mach
number will be a serious design factor.
Mike
Borgelt Instruments - manufacturers of quality soaring instruments
ABN 75532924542
Box 7474 Toowoomba M.C.
Queensland 4352
Australia
Tel 0746 355 784
mob 0428 355 784
0429 355 784
fax 0746 358 796
International
phone: int'l+ 61 7 46 355 784
Cellphone:int'l +61 4 28 355 784
int'l +61 4 29 355 784
fax : int'l+ 61 7 46 358 796
email: [EMAIL PROTECTED]
website:www.borgeltinstruments.com
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