"Jim Macklin" wrote in message
news

If you do some simple algebra, the SR-71 is much faster than
the published data. As the story below shows, only about
60% of the flight time is spent at supersonic speed. Yet
the speed for the flights are in the 2,000 mph range even
counting the subsonic time into the average.
I would expect that the maximum speed was 4,000-6,000 mph.
Much of the SR71 POH is available on-line at:
http://www.sr-71.org/blackbird/manual/
Section 5-8 (Flight Envelop Limits) is a good read. The whole POH is very
interesting.
John Severyn
KLVK