Sierra Space had been looking to join SpaceX and Northrop Grumman as one of three commercial resupply partners for NASA aiming to fly its Dream Chaser spacecraft to the International Space Station.
Breaking Mach 9.6 with an air-breathing engine wasn’t just a speed stunt. It confirmed that scramjets can operate where rockets once had the field to themselves,” said Harry J. Kazianis, citing the ...
The maker of America’s largest helicopters just received a new order for its enormous heavy lift CH-53K King Stallion. The ...
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