From oil soaked World War I rotary engines to the massive 28 cylinder R 4360 Wasp Major, this episode traces the evolution of the air cooled radial. We break down how engineers balanced cooling, power ...

Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need valves to ...

If you look at aircraft from the Second World War or earlier, you'll notice that many of them have engines with large frontal areas and cylinders arranged about the propeller crankshaft. This a radial ...