The UK government’s decision to send its Watchkeeper uncrewed air vehicles (UAVs) into early retirement marks an ignominious end for a once-ambitious effort to boost the British Army’s airborne ...
LOS ANGELES (AP) — An unmanned experimental aircraft failed during an attempt to fly at six times the speed of sound in the latest setback for hypersonic flight. The X-51A Waverider was designed to ...
LOS ANGELES — The Air Force says an unmanned experimental aircraft suffered a control failure during an attempt to fly at six times the speed of sound. The X-51A Waverider was designed to reach Mach 6 ...
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