MCF13-0015-455
As gaseous hydrogen vents from the top of the fuselage, ground crewmen secure Boeing’s Phantom Eye technology demonstration aircraft following its landing on Rogers Dry Lake after its second test flight over Edwards Air Force Base on Feb. 25, 2013. The slow-flying aircraft flew for 66 minutes at a speed of about 62 knots before touching down on its bicycle-style landing gear. 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 at altitudes up to 65,000 feet for up to four days.February 25, 2013
Boeing Photo / Bob Ferguson