Posts tagged US
US Military And NASA Test 4,500Mph Hypersonic Aircraft

A hypersonic jet known as the ‘X-15A WaveRider’ and co-funded by the US military and NASA will today undergo its latest test; dropping from around 50,000ft before rocketing to speeds of more than 4,000Mph, climbing to 70,000ft, before falling into the Pacific Ocean to break up.

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