Another tip jet helicopter was the Sud-Ouest Djinn [1] from the 1950s. This design was somewhat successful, with 178 units being built. Unlike other tip jet d

Another tip jet helicopter was the Sud-Ouest Djinn [1] from the 1950s. This design was somewhat successful, with 178 units being built. Unlike other tip jet designs, the Djinn used a fixed gas turbine to drive an air-compressor, and the blades were simply powered by compressed-air tip jets. Since tip jet driven rotors don't generate a lot of torque, the Djinn didn't have a tail rotor. [1] https://en.wikipedia.org/wiki/Sud-Ouest_Djinn https://en.wikipedia.org/wiki/Sud-Ouest_Djinn