Boeing 'Phantom Eye' Hydrogen Powered Vehicle Takes Shape
Boeing has begun to build Phantom Eye -- its first unmanned, liquid-hydrogen powered, high altitude long endurance (HALE) demonstrator aircraft.
The twin-engine Phantom Eye demonstrator will have a 150-foot wingspan and be capable of flying for more than four days at altitudes up to 65,000 feet while carrying a payload of up to 450 pounds.
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