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An artist's rendition of an X-51A WaveRider (in white) attached to the wing of a B-52.
Pratt & Whitney
August 15, 2012 The experimental aircraft's controls failed before its "scramjet" engine could kick in, the Air Force says.
August 13, 2012 Over the Pacific Ocean, there's going to be a test of an experimental unmanned aircraft called the X-51A WaveRider. If all goes as planned, it will accelerate to about 3,600 mph — a speed that could get you from L.A. to N.Y.C. in 46 minutes.
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