With the purple-hued hills of the Tehachapi Range in the background, the slow-flying Boeing Phantom Eye technology demonstrator climbs out over Edwards Air Force Base on its second test flight on Feb. 25, 2013.
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With the purple-hued hills of the Tehachapi Range in the background, the slow-flying Boeing Phantom Eye technology demonstrator climbs out over Edwards Air Force Base on its second test flight on Feb. 25, 2013. The 150-foot wingspan aircraft, powered by two hydrogen-fueled internal combustion engines driving slow-turning propellers, is a prototype for a future long-endurance intelligence, surveillance, and reconnaissance aircraft that would be capable of remaining aloft for up to four days.February 25, 2013
Boeing Photo / Bob Ferguson