Rotary engine (disambiguation)
From Wikipedia, the free encyclopedia
A rotary engine was a rotating piston engine used in some early aircraft.
Confusingly, the Wankel engine - a pistonless internal combustion engine used in NSU and some Mazda cars has also been referred to as a "rotary engine"
Rotary engine may also refer to:
- Pistonless rotary engine - other proposed pistonless internal combustion engines
- Turbine - a rotary engine that extract energy from a fluid flow
- Windmill - a rotary engine that extract energy from wind
- Waterwheel a rotary engines that extract energy from water

