The Piaggio P.XII is an Italian 18-cylinder radial aircraft engine developed in the 1930s by Rinaldo Piaggio S.p.A. The P.XII was two Piaggio P.X engines in tandem, which were versions of the French

Gnome-Rhône 9K The Gnome-Rhône 9K Mistral was a nine-cylinder 550 hp (405 kW) to 700 hp air-cooled radial engine, that started life as an enlarged Gnome-Rhône 7K with two extra cylinders. Design and development The Gnome-Rhône 7K itself was a ...

''Mistral'' made under license, themselves being much modified Gnome-Rhône 9A - a license-built

Bristol Jupiter The Bristol Jupiter was a British nine-cylinder single-row piston radial engine built by the Bristol Aeroplane Company. Originally designed late in World War I and known as the Cosmos Jupiter, a lengthy series of upgrades and developments turn ...

. The engine was used in some Italian aircraft from 1940 until the end of

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

, especially the Piaggio P.108. An up-rated version was tested as the Piaggio P.XXII.

Variants

Variants of the Piaggio P.XII include: (R - ''Riduttore'' - reduction gearing and C - ''Compressore'' - supercharged) ;P.XII R.C.35: (geared, rated altitude ) ;P.XII R.C.40: (geared, rated altitude ) ;P.XII R.C.l00/2v: (geared, rated altitude ) ;P.XV R.C.60/2v: (geared, rated altitude ) ;P.XXII R.C.35D:Higher rating with slightly higher displacement than the P.XII series engines. (geared, rated altitude ) ;P.XXII R.C.35R:Same as P.XXII R.C.35D, but propeller rotates in opposite direction ;P.XXII R.C.60: (geared, rated altitude )

Applications

* CANT Z.1015 *

CANT Z.1018 The CRDA CANT Z.1018 ''Leone'' (Lion) was an Italian medium bomber of the 1940s. Design and development In 1939, the ''Regia Aeronautica'' (Italian Air Force) initiated its ''R Plan'', or ''3,000 airplanes'', a campaign to quickly increase its ...

CANT Z.511 The CANT Z.511 was a four-engine long-range seaplane designed by Filippo Zappata of the "Cantieri Riuniti dell'Adriatico" (CRDA) company. Originally designed for the Central and South Atlantic passenger routes, it was later adapted as a military ...

* Caproni Ca.169 *

Piaggio P.108 The Piaggio P.108 ''Bombardiere'' was an Italian four-engine heavy bomber that saw service with the Regia Aeronautica during World War II.Matricardi 2006, p. 257. The prototype first flew on 24 November 1939 and it entered service in 1941. I ...

Savoia-Marchetti SM.84 The Savoia-Marchetti SM.84, not to be confused with the Savoia-Marchetti S.84 airliner prototype, was an Italian bomber aircraft of World War II. It was designed by Savoia-Marchetti as a replacement for its successful SM.79, and shared its thr ...

ter * Savoia-Marchetti SM.89

Specifications (P.XII R.C.35)

References

Notes

Bibliography