Initial data from the partially successful May 26 X-51A Waverider hypersonic demonstrator flight reveals the scramjet engine was still running normally when the vehicle began experiencing control difficulties prior to termination. Hailed as an overall success for achieving several key hypersonic test milestones, the flight was halted early when telemetry was lost at around 200 sec. into the test. “From what we saw, the engine was not the cause of the failure,” says Charles Brink, U.S. Air ...


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