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Performance envelope of the SR-71
As my news server doesn't let me post to a.b.p.aviation, this is the
next best place I can think of for this reply. In answer to a question about pictures of the SR-71 showing a shock wave, several people have responded saying that the SR-71 is not supersonic at low level. Looking for confirmation, I found this URL http://www.wvi.com/~lelandh/exec12.jpg - a page from "The SR-71 Reconnaissance System Executive Handbook", written by Bill Majors (Lockheed ADP), which gives the performance envelope of the SR-71. And yes, it is subsonic to about 20,000 feet. |
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