Check Six – 1990: YF-22 Demonstrated Supercruise Capacity
On November 3, 1990 at Edwards AFB, California. The YF-22 demonstrated it supercruise capacity for the first time. It reached Mach 1.58 at 40,000 ft. During the supersonic portion of the flight, the aircraft used 1/3 less fuel than it would if the afterburners had been employed.
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