The SR-71 Blackbird is 2,193 miles per hour fast or Mach 3, three times faster than the speed of sound.
the SR 71 goes really fast it goes Mach 7 NOT Mach 3.
An SR-71 flies at the speed of more than Mach 3.5.
The SR-71's record speed is 2,196 miles per hour. The SR-91 is currently a myth and has not been proved to exist.
Depends on how fast the missle is.
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Top Speed of 2,664.22 mph
3,540.6 kilometers per hour.
It can be very fast but the record is 2193 mph per hour.
The SR-71 by Lockheed was a very fast development compared to many military aircraft. The plane was developed from the work done on the A-12, beginning in 1960 and with the first SR-71 flying in 1964.
They can fly at over Mach 3.5 .
Top Speed of 2,664.22 mph
3 times the speed of sound.