test aircraft

X-51A WaveRider test flight at Mach 6 failed

The US Air Force has announced that an attempt to fly its hypersonic jet X-51A WaveRider at Mach 6 (3,600 mph; 5795 km/h) has failed

The US Air Force has announced that an attempt to fly its hypersonic jet X-51A WaveRider at Mach 6 (3,600 mph; 5795 km/h) has failed. The unmanned aircraft had been designed to fly at six times the speed of sound after being dropped from a B-52 bomber. But officials said that a faulty control fin [...]

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