On Wed, 07 Jul 2004 00:00:24 +0800, Stealth Pilot wrote:

On 06 Jul 2004 02:31:43 GMT, (DJFawcett26) wrote:

Hello All,

Since this is about the most resouceful group I know, I though somebody may be
able to help. I have been trying to find the supersonic L/D of the B-1A or B
and the SR-71. Does anybody have any information concerning either. I realize
that the L/D is mach dependent, but I can not fine anything at any mach number.
I am doing a comparative analysis on a supersonic configuration, and the info
would be most helpful.

Thanks in advance for any help

Best Regards,

Dave

I had a quick look through my books.
only reference that may be useful is of the concorde.
scaling off the diagram gives a max L/d of 7.47 or say 7.5 at mach 2.
not the aircraft you want but a number nevertheless.

there is a graph showing l/d with mach for some "transport" aircraft.
dont know which one. figure 12.26 in the book below.

fundamentals of flight by richard shevell. 2nd edition. page 215.

Stealth Pilot
Australia.

Somewhere on the internet there is a page giving a L/D value for the
Valkyrie. Apparently it had the best L/D of any supersonic aircraft to
date, due to its novel wing design.

AC