Gnome-Rhône 18L

18L
Type Radial engine
National origin France
Manufacturer Gnome et Rhône

The Gnome et Rhône 18L was a French-designed twin-row 18-cylinder air-cooled radial engine. The 18L was a large step up in terms of displacement, power and number of cylinders. The majority of Gnome-Rhone engines were either 7, 9 or 14 cylinders. The engine proved not to be a success, and it was dropped in 1939 due to a poor power-to-weight ratio.

Specifications (Gnome Rhone 18L-00)

Data from Flight:POWER at the SALON[1]

General characteristics

  • Type: 18-cylinder twin-row air-cooled radial engine
  • Bore: 146 mm (5.7 in)
  • Stroke: 190 mm (7.5 in)
  • Displacement: 54.2 L (3,310 cu in)
  • Height: 1,400 mm (55 in)
  • Dry weight: 736 kg (1,623 lb)

Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder
  • Supercharger: Yes
  • Fuel system: 1 Bronzania Carburetor
  • Fuel type: 87 octane
  • Cooling system: air
  • Reduction gear: 0.684:1

Performance

  • Power output: 970 kW (1,300 hp) at 2,170 rpm at 3,400 m (11,000 ft); 1,000 kW (1,400 hp) max
  • Compression ratio: 5.5:1
  • Power-to-weight ratio: 0.8 hp/lb at cruise speed

See also

Comparable engines

Related lists

References

  1. ^ "POWER at the SALON: a Detailed Review of the British and Continental Engines at the Show : A Remarkable Variety of Types". Flight. 26 November 1936. p. 577. Retrieved 14 March 2015.
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Further reading

  • Gunston, Bill (1987). World Encyclopaedia of Aero Engines (Reprint. ed.). Wellingborough: Stephens. p. 84. ISBN 9780850597172.

External links

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Gnome rotary engines
Le Rhône rotary engines
Gnome et Rhône radial engines