Gnome-Rhône 14N

The Gnome-Rhône 14N was a 14-cylinder two-row air-cooled radial engine designed and manufactured by Gnome-Rhône just before the start of World War II. A development of the Gnome-Rhône 14K, the 14N was used on several French and even one German aircraft.

Gnome-Rhône 14N
Type Radial engine
National origin France
Manufacturer Gnome et Rhône
First run 1937
Major applications Bloch MB.150
Messerschmitt Me 323
Amiot 351
Lioré et Olivier LeO 45
Developed from Gnome-Rhône 14K Mistral Major
Developed into Gnome-Rhône 14M,
Gnome-Rhône 14R

Design and development

The 14K's reliability was poor, so Gnome-Rhône carried out major redesign, using different materials for the pistons and valves, and enlarging the cooling fins to increase surface area by 39%.

The 14N was introduced in 1937 and was quickly installed 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 increased power.

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 restricted by the armistice with Germany.

Variants

Data from:Aircraft engines of the World 1945,[1] Aircraft engines of the World 1946[2]

  • 14N-2: Left hand (LH) rotation, 780 kW (1,050 hp)
  • 14N-3: Right hand (RH) rotation version of N-2
  • 14N-10: LH rotation, 680 kW (910 hp)
  • 14N-11: RH rotation version of N-10
  • 14N-16: LH rotation, 697 kW (935 hp)
  • 14N-17: RH rotation version of N-16
  • 14N-20: LH rotation, 846 kW (1,135 hp)
  • 14N-21: RH rotation version of N-20
  • 14N-44: LH rotation, 780 kW (1,050 hp)
  • 14N-45: RH rotation version of N-44
  • 14N-48: LH rotation, 880 kW (1,180 hp)
  • 14N-49: RH rotation version of N-48
  • 14N-50: LH rotation, 1,000 kW (1,400 hp)
  • 14N-54: LH rotation, 930 kW (1,250 hp)
  • 14N-55: RH rotation version of N-54
  • 14N-58: LH rotation, 880 kW (1,180 hp)
  • 14N-59: RH rotation version of N-58

Applications

Specifications (14N-48)

Data from Aircraft engines of the World 1945[1]

General characteristics
  • 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)

Components

Performance
  • 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)

See also

References
Wikimedia Commons has media related to Gnome-Rhône 14N.

Citations
  1. Wilkinson, Paul H. (1945). Aircraft engines of the World 1945 (3rd ed.). -New York: Paul H. Wilkinson. p. 235.
  2. Wilkinson, Paul H. (1946). Aircraft engines of the World 1946 (4th ed.). London: Sir Isaac Pitman & Sons Ltd.

Bibliography
  • Danel, Raymond and Cuny, Jean. L'aviation française de bombardement et de renseignement 1918-1940 Docavia n°12, Editions Larivière


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.