Gnome-Rhône 18L
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.
| 18L | |
|---|---|
 | |
| Type | Radial engine |
| National origin | France |
| Manufacturer | Gnome et Rhône |
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
- Alfa Romeo 135
- BMW 802
- Bristol Centaurus
- Fiat A.82
- Nakajima Homare
- Pratt & Whitney R-2800 Double Wasp
- Tumansky M-90
- Wright R-3350 Duplex-Cyclone
Related lists
References
- "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.
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