As a result, they are considered more efficient by some metrics and require fewer moving parts to function. The first rotary engines were primarily used for aircraft during World War I ...

The rotary engine has the advantages of producing less vibration and having fewer component parts. It is more compact, weighs less and has a higher output than a conventional engine. The rotary ...

Giuseppe Genchi, who found a trove of engine parts at the University of Palermo, spent countless hours restoring an 11-cylinder rotary engine from World War I. Giorgio Hardouin You might say that ...