El primer vuelo del X-51A ha sido considerado como éxito después de que consiguiera alcanzar Mach 5 a 70.000 pies. La prueba ha durado 140 segundos.
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The first X-51A flight was considered successful after it acheived Mach 5 speed at 70,000ft. The test last 140 seconds before it was aborted till to lost of telemetry.
www.flightglobal.com
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