|Manufacturer||Gnome et Rhône|
|Major applications||Bloch MB.150
Messerschmitt Me 323
Lioré et Olivier LeO 45
|Developed from||Gnome-Rhône Mistral Major|
|Developed into||Gnome-Rhône 14M|
The Gnome-Rhône 14N was a 14-cylinder two-row air-cooled radial engine designed and manufactured by Gnome-Rhône. A development of the pre-war Gnome-Rhône 14K, the 14N was used on several French and German aircraft of World War II.
Design and development
Facing criticisms over the 14K's reliability, Gnome-Rhône undertook a major upgrade of its 14-cylinder design, using different materials for the pistons and valves, and enlarging cooling surfaces by 39%.
The new 14N was introduced in 1937 and was quickly adopted on several aircraft models. In 1939, minor improvements allowed Gnome-Rhône to increase the compression ratio from 6.1:1 to 6.8:1, which resulted in increased power for wartime production aircraft.
The 14N was further developed into the Gnome-Rhône 14R featuring a 2-stage supercharger, but this type was not widely used until after World War II as production of improved engines was prohibited by the terms of the armistice with Germany.
- LH rotation, 790 kW (1,060 hp).
- RH rotation version of -2.
- LH rotation, 682 kW (915 hp).
- RH rotation version of -16.
- LH rotation, 780 kW (1,050 hp).
- RH rotation version of -44.
- LH rotation, 880 kW (1,180 hp).
- RH rotation version of -48.
- LH rotation, 1,000 kW (1,400 hp).
- LH rotation, 930 kW (1,250 hp).
- RH rotation version of -54.
- LH rotation, 880 kW (1,180 hp).
- RH rotation version of -58.
- Amiot 351
- Amiot 354
- Bloch MB.131
- Bloch MB.151
- Bloch MB.152
- Bloch MB.155
- Bloch MB.170
- Bloch MB.174
- Bloch MB.175
- Bloch MB.220
- Breguet 891R Mars (2 × 14R)
- Farman F.222
- Latécoère 611
- Lioré et Olivier LeO 45
- Sud-Est SE.161 Languedoc
- Messerschmitt Me 323
- Koolhoven F.K.58
- PZL P.24
- PZL.43 Karaś
- SNCAO CAO.700 (2X 14N-48 + 2x 14N-49)
Data from Aircraft engines of the World 1945
- Type: Fourteen-cylinder two-row air-cooled piston engine
- Bore: 146 mm (5.75 in)
- Stroke: 165 mm (6.50 in)
- Displacement: 38.67 l (2,360 cu in)
- Length: 1,480 mm (58.27 in)
- Diameter: 1,290 mm (50.79 in)
- Dry weight: 620 kg (1,370 lb)
- Valvetrain: Two inlet and two exhaust overhead valves per cylinder
- Supercharger: Single-stage single-speed centrifugal type supercharger
- Fuel system: Stromberg carburetor
- Fuel type: 87 octane rating gasoline
- Oil system: Pressure fed at 480 kPa (70 psi)
- Cooling system: Air-cooled
- Reduction gear: 0.5:1 planetary reduction gearing
- Power output:
- Take-off: 880 kW (1,180 hp) at 2,650 rpm
- Military: 790 kW (1,060 hp) at 2,400 rpm at 3,900 m (12,800 ft)
- Cruise: 630 kW (850 hp) at 2,100 rpm at 3,900 m (12,800 ft)
- Specific power: 22.45 kW/l (0.49 hp/in³)
- Compression ratio: 6.8:1
- Power-to-weight ratio: 1.4 kW/kg (0.85 hp/lb)
- Pratt & Whitney R-1830 a comparable engine sometimes fitted as an alternative to the 14N on French designs
- Tumansky M-88
- BMW 801
- Bristol Hercules
- Wright R-2600
- Fiat A.74
- Mitsubishi Kinsei
- Nakajima Sakae
- Shvetsov ASh-82
|Wikimedia Commons has media related to Gnome-Rhône 14N.|
- Wilkinson, Paul H. (1946). Aircraft engines of the World 1946 (4th ed.). London: Sir Isaac Pitman & Sons Ltd.
- Wilkinson, Paul H. (1945). Aircraft engines of the World 1945 (3rd ed.). -New York: Paul H. Wilkinson.
- Danel, Raymond and Cuny, Jean. L'aviation française de bombardement et de renseignement 1918-1940 Docavia n°12, Editions Larivière