P.XI
ManufacturerPiaggio
Developed fromGnome-Rhône Mistral Major

The Piaggio P.XI was an Italian 14-cylinder radial aircraft engine. The P.XI was a licensed derivative of the French Gnome-Rhône Mistral Major 14K produced in Italy.[1]

Further development led to the P.XIX. This featured an increased compression ratio from 6:1 to 7:1 and an rpm increase from 2,400 to 2,600.

Variants

P.XI
P.XIbis
P.XI R.C.15
(geared, rated altitude 1,500 m (4,900 ft))
P.XI R.C.30
(geared, rated altitude 3,000 m (9,800 ft))
P.XI R.C.40D
[2]
P.XI R.C.40S
740 kW (1,000 PS) (geared, rated altitude 4,000 m (13,000 ft)), opposite rotation to 40D.
P.XI R.C.40bis
(geared, rated altitude 4,000 m (13,000 ft))
P.XI R.2C.40
740 kW (1,000 PS), (geared, rated altitude 4,000 m (13,000 ft)), two-speed supercharger.
P.XI C.40
(direct drive, rated altitude 4,000 m (13,000 ft))
P.XI R.C.44
(geared, rated altitude 4,400 m (14,400 ft))
P.XI R.C.50
(geared, rated altitude 5,000 m (16,000 ft))
P.XI R.C.60
(geared, rated altitude 6,000 m (20,000 ft))
P.XI R.C.72
(geared, rated altitude 7,200 m (23,600 ft))
P.XI R.C.100
P.XI R.C.100/2v
(geared, rated altitude 10,000 m (33,000 ft))

Applications

References

Notes

  1. ^ Gunston 1989, p.110.
  2. ^ Grey, C.G. & Bridgman, Leonard (1938). Jane's All the World's Aircraft 1938. London: Sampson Low, Marston & company, ltd. :740 kW (1,000 PS) (geared, rated altitude 4,000 m (13,000 ft))

Bibliography

  • Thompson, Jonathan (1963). Italian Civil & Military Aircraft 1930-1945. New York: Aero Publishers Inc. ISBN 0-8168-6500-0. LCCN 63-17621.
  • Wilkinson, Paul H. (1945). Aircraft engines of the World 1945. 2nd ed. London: Paul H. Wilkinson. pp. 306–307.
  • Grey, C. G. & Bridgman, Leonard (1938). Jane's All the World's Aircraft 1938. London: Sampson Low, Marston & company, ltd.
  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9