Curtiss-Wright X-19 VTOL

In March 1960 the Curtiss-Wright Corporation developed the X-100, a prototype for a new, vertical take-off transport aircraft. The X-100 had a single turboshaft engine, which propelled two tilting-rotors, while at the tail swivelling nozzles used the engine’s exhaust gases to give additional control in hovering or slow flight. From the X-100 Curtiss-Wright developed the larger X-200, of which the United States Air Force ordered two prototypes designated the X-19A. The X-19 was a high-wing monoplane with two sets of wings. Each wing mounted a 13 ft (4 m) propeller that could be rotated through 90 degrees allowing the aircraft to take off and land like a helicopter. The propellers were driven by twin Avco Lycoming T55-L-5 turboshaft engines mounted in the fuselage.