In 1984, an SR-71 Blackbird flying at 83,000 feet over the Soviet Kola Peninsula lost both Pratt & Whitney J58 engines ...
Lockheed’s A-12 needed a powerplant that could sustain Mach 3 flight, leading to the Pratt and Whitney J58, a turbojet-ramjet hybrid burning JP-7. The engine demanded exotic materials to survive ...