Both of these technologies were used in the X-51A WaveRider, a vehicle developed by DARPA, the US Air Force and space agency NASA that made the longest-ever hypersonic flight for a vehicle of its kind in May 2013.

Aerojet Rocketdyne also did propulsion system test firings for a future ground-launched hypersonic missile, under DARPA’s Operational Fires program.

Developing technologies able of intepcting incoming missiles or other fast-moving vehicles out of the sky is a priority for armies around the world.

source: express.co.uk

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