The Pentagon’s Defense Advanced Research Projects Agency (DARPA) has selected Bell Textron to build an X-plane demonstrator capable of flying at speeds of up to 450 knots, with the office confirming ...
An artist's impression of the Polaris Spaceplanes Hypersonic Test and Experimentation Vehicle (HYTEV) research vehicle. The first flight is anticipated before the end of 2027. (Polaris Spaceplanes) ...
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