A Northrop Grumman tiltrotor unmanned air vehicle crashed Saturday after successfully completing a 26-minute demonstration prototype flight test, the company and the Navy announced today. The vertical take-off and landing tactical UAV followed a preprogrammed mission plan during the test at the Naval Air Warfare Center, China Lake, CA. "At the conclusion of the flight test, the vehicle failed to transition from its hover over the final waypoint to the landing site and was destroyed upon impact," the Navy said...
