تماشای ویدئو Boeing Phantom Eye High Altitude Long Endurance UAV First Flight 720p از آی-ویدئو

By Randy Jackson. Towed onto the dry lakebed of Edwards Air Force Base, Calif., before day break, the morning sun rose to welcome Boeing's Phantom Eye. At 6:22 a.m. Pacific time the unmanned aircraft lifted off its launch cart and climbed to an altitude of 4,080 feet into the desert sky. The autonomous aircraft, with its 150-foot wingspan and powered by energy efficient liquid hydrogen, completed its first take off and landing June 1. After touching down, the vehicle sustained some damage when th
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