Nagler VG-1 Vertigyro
The 1963 VG-1 Vertigyro (N5395Z) comprised a Piper Colt aircraft fuselage, complete with engine and prop. Its rotor system was driven by a turbine engine, enabling the craft to be flown as a gyroplane, a helicopter, or a combination of both. Only the one was built.
The vehicle could take off and fly as a helicopter at 75mph, powered by a Garret-AiResearch GTC-85-90 gas turbine to feed compressed air to nozzles in the two-blade rotor, then convert into an autogyro to do 85mph powered by the one 108hp Lycoming O-235.
Engines: 1 x Garret-AiResearch GTC-85-90 gas turbine / 1 x Lycoming O-235, 108hp
Rotor diameter: 36 ft 0 in
Minimum gyro speed: 45 mph