Right: SR-71B Blackbird (USAF / Judson Brohmer – Armstrong) – Left= Pratt & Whitney J58 Turbojet (Andywebby – Own work) The company behind the SR-71 Blackbird’s engine Pratt & Whitney now confirms it is working on a secretive development program called Metacomet aimed at solving the problem of fielding high-speed, reusable propulsion systems at low …
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