The Piaggio Stella P.VII was the first P series aircraft engine produced by Rinaldo Piaggio S.p.A. Based on its experience license-producing the Gnome-Rhône 7K, Piaggio sold the engine to be used on a wide range of Italian aircraft before and during World War II, including the record-breaking Caproni Ca.133.
Having built engines under licence from Gnome et Rhône, Piaggio designed a seven-cylinder radial using the same principles.
[1] The engine, named P.VII for its seven cylinders, was one in a series of radial engines produced by Piaggio initially named Stella, meaning star.
[3] One notable version was the P.VII Z which was fitted with a floatless Piaggio AS80 carburettor for aerobatic flight.
It powered the Caproni Ca.133 flown by Renato Donati that, in 1933, broke the record for the longest duration in inverted flight.