Ratsiyevich "Rat"


Ivan Z. Ratsievich's patent for a helicopter with rotor drive powered optionally by steam, electric motor, or pilot's muscles, and two paddle-wheels for providing transitional flight and power increase. A light gas was also to be pumped into a hollow section of the craft, supposedly to aid in lift. In case of an emergency, the pilot had to tear away parts to jump out of the machine. The design was rejected by the Department of Trade and Manufactures "for lack of novelty."