Just how automated the B-21 is remains unclear, but officials pushing to fly it with just one pilot points to a breakthrough ...

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Boeing’s X-51A “Waverider” was a hypersonic tech demonstrator built with AFRL, DARPA, and Pratt & Whitney Rocketdyne to ...

A, an unmanned scramjet testbed, set the world record for an air-breathing aircraft by hitting Mach 9.6 in 2004. -Launched ...