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Attached to a booster rocket, the X-51A Waverider is mounted under the wing of a B-52 mothership. Powered by a Pratt Whitney Rocketdyne SJY61 scramjet engine, it is designed to ride on its own shockwave and accelerate to about Mach 6. (© Boeing)
Attached to a booster rocket, the X-51A Waverider is mounted under the wing of a B-52 mothership. Powered by a Pratt Whitney Rocketdyne SJY61 scramjet engine, it is designed to ride on its own shockwave and accelerate to about Mach 6. (© Boeing)