DARPA green lights Aurora, Bell for next phase in SPRINT X-plane competition
Northrop Grumman and Piasecki Aircraft Corporation have been eliminated from a DARPA effort to design, develop and fly a high-speed vertical takeoff and landing X-plane.
Northrop Grumman and Piasecki Aircraft Corporation have been eliminated from a DARPA effort to design, develop and fly a high-speed vertical takeoff and landing X-plane.