The Vertol VZ-2 (or Model 76) is a research aircraft built in the United States in 1957 to investigate the tiltwing approach to vertical take-off and landing.The aircraft had a fuselage of tubular framework (originally uncovered) and accommodation for its pilot in a helicopter-like bubble canopy.The T-tail incorporated small ducted fans to act as thrusters for greater control at low speeds.Ground tests began in April 1957 and on 13 August, the VZ-2 took off for the first time in hover mode only.By the time the test program ended in 1965, the VZ-2 had made some 450 flights, including 34 full transitions.