NORTH EDWARDS, Calif., March 13 (UPI) -- Boeing says its Phantom Eye unmanned aircraft, burning liquid hydrogen as a fuel, has successfully completed its initial taxi test in California.
While it will someday soar to 65,000 feet, it took a modest, ground-level spin at Edwards Air Force Base in its first medium-speed taxi test this month, Boeing said Tuesday. It covered about 4,000 feet at speeds of up to 34.5 mph.