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Piaggio P.XI

Aircraft radial engine

Aircraft radial engine

FieldValue
nameP.XI
imagePiaggio P.XI. - Teknikens och sjöfartens hus.jpg
captionPreserved Piaggio P.XI
engine_typeRadial engine
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.

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 1500 m) ;P.XI R.C.30: (geared, rated altitude 3000 m) ;P.XI R.C.40D: ;P.XI R.C.40S :1,000 PS (geared, rated altitude 4000 m), opposite rotation to 40D. ;P.XI R.C.40bis: (geared, rated altitude 4000 m) ;P.XI R.2C.40:1,000 PS, (geared, rated altitude 4000 m), two-speed supercharger. ;P.XI C.40: (direct drive, rated altitude 4000 m) ;P.XI R.C.44: (geared, rated altitude 4400 m) ;P.XI R.C.50: (geared, rated altitude 5000 m) ;P.XI R.C.60: (geared, rated altitude 6000 m) ;P.XI R.C.72: (geared, rated altitude 7200 m) ;P.XI R.C.100: ;P.XI R.C.100/2v: (geared, rated altitude 10000 m)

Applications

  • Breda Ba.65
  • Breda Ba.88
  • CANT Z.516
  • CANT Z.1007
  • Caproni Ca.135
  • Caproni Ca.161
  • Reggiane Re 2000
  • Saab 17C
  • Savoia-Marchetti SM.79B
  • Savoia-Marchetti SM.84

Specifications (P.XI R.C.40)

  • **Take-off: **1000 PS at 2,200rpm
  • **Military: **1000 PS at 2,200rpm at 4000 m
  • **Cruising: **1000 PS at 1,800rpm at 4000 m |power/weight= 1.15 kW/kg (0.699 hp/lb)
  • Ignition: 2 x Marelli MF14 magnetos, 2 x spark plugs per cylinder fed by a shielded ignition harness.

References

Notes

Bibliography

  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989.

References

  1. Gunston 1989, p.110.
  2. Grey, C.G.. (1938). "Jane's All the World's Aircraft 1938". Sampson Low, Marston & company, ltd.
  3. Thompson, Jonathan. (1963). "Italian Civil & Military Aircraft 1930-1945". Aero Publishers Inc..
  4. Wilkinson, Paul H.. (1945). "Aircraft engines of the World 1945". Paul H. Wilkinson.
Info: Wikipedia Source

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