Some interesting stuff at Gizmodo about the A-12, the aircraft that evolved into the much better known SR-71:
This declassified Lockheed Martin video shows the first flight of the A-12, the super-secret spy plane precursor of the SR-71 Blackbird. Only 15 were made under the CIA’s OXCART program. The story of this technological wonder is fascinating.
Remember, this aircraft first flow in 62 with development starting in 1957. With further development, it was able to reach Mach 3.2. Not bad for an aircraft that was designed 12 years after the end of a war fought with piston engined prop planes.
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