the A-11/12, YF-12, and the SR-71 were relatively small variants on the same plane, although there weren't a lot of parts interchangeable as you might think given their similar shape.
Herb... ----- Original Message ----- From: "Peter J. Alling" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, August 13, 2004 11:57 AM Subject: Re: OT: History That Will Interest No One-was: OT: Ottawa trip > Apparently you never heard of the YF-12 > http://www.visi.com/~jweeks/sr71/usafm-yf12.html. > > Gonz wrote: > > > Fascinating reading. Really too bad that it was canceled, it looked > > like it could have advanced the state of the art of fighter technology > > by leaps and bounds. Of course no one except the people in the > > highest level of clearance knew about the SR-71 Blackbird, clearly the > > most advanced supersonic aircraft at that time, although it was > > strictly reconnaissance.
