Rotary engine (disambiguation)
A rotary engine is a type of internal combustion piston engine used in some early aircraft, motorcycles, and cars. Virtually the whole engine rotates about a fixed crankshaft.
Rotary engine may also refer to:
- Pistonless rotary engine - pistonless internal combustion engines, e.g. the Wankel engine used in some NSU and Mazda cars.
- Turbine - a rotary engine that extracts energy from a fluid flow
- Windmill - a rotary engine that extracts energy from wind
- Waterwheel - a rotary engine that extracts energy from water
For internal combustion piston engines with a fixed engine block of radially-mounted cylinders driving a rotating crankshaft, see radial engine.
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