Boeing Unveils Hydrogen-Powered Drone That Can Stay Airborne For Days
A new Boeing unmanned drone powered by liquid-hydrogen and designed to stay airborne for days has completed its first autonomous flight at the NASA Dryden Flight Research Center at Edwards Air Force Base. During the 28-minute flight, the Phantom Eye reached an altitude of 4,080 feet (1,244 meters) with a cruising speed of 62 knots [...]
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June 7, 2012 


