That would be the Le Rhone Rotary engine.
No wonder ya needed goggles flying one of those - oil flyin' everywhere.................FRegards
It makes a neat hydraulic motor, as well as an airplane engine. Any V-twin is just a pie slice out of one.
The big advance in radial engine technology came about on late WW1 airplanes when it was decided to stop spinning the entire crankcase while holding the crankshaft stationary.
That would be the Le Rhone Rotary engine.
No wonder ya needed goggles flying one of those - oil flyin' everywhere.................FRegards
Not all of them, IMHO. The HD style common-crankpin engines are. Some of them are more like a vertical twin with the cylinders staggered.