The Lockheed SR-71 Blackbird spy plane flew more than three-and-a-half times the speed of sound, so fast that no other aircraft could catch it. "SR-71" covers every aspect of the SR-71’s ...

These operations include testing the Bell X-1, the first X-plane to breach the sound barrier, the North American X-15, which set records for height and speed, and the Lockheed SR-71 Blackbird spy ...

then the other of the SR-71’s J-58 engines. One sound I shall never forgot is that of those unmuffled Buicks holding steady at better than 6,000 rpm in excess of 15 seconds at a time ...

The SR-71 “Blackbird” broke the world’s record for sustained altitude in horizontal flight in 1976 when it flew at Mach 3.3 (times the speed of sound). As of 2025, no fighter or proposed ...

The SR-71 was capable of reaching speeds over three times the speed of sound, and the SR-72 is intended to have even more impressive specs. Following is a transcript of the video. The SR-72 is the ...