Capable of 32,500 pounds of thrust, Lockheed’s J58 engine turned a spy plane into a Mach 3 monster. Built from exotic alloys that glowed white-hot at 2,000°F, it was part turbojet, part ramjet, an ...
Lockheed’s engineers built the J58 engine to do the impossible, operate as both a jet and a ramjet. At Mach 3 and 85,000 feet, it pushed the SR-71 through temperatures that melted titanium and tested ...
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