Gnome Delta
The Gnome 9 Delta was a French designed, nine-cylinder, air-cooled rotary aero engine that was produced under license in Britain. Powering several World War I era aircraft types it produced 100 hp (75 kW) from its capacity of 16 litres (980 cu in).[1]
| Delta | |
|---|---|
 | |
| Gnome 9 Delta as shown in a 1913 Gnome catalog | |
| Type | Rotary aero engine |
| Manufacturer | Société des Moteurs Gnome |
| First run | c.1909 |
| Major applications | Avro 500 Vickers F.B.9 Gunbus |
| Variants | Oberursel U.I |
Variants
- Delta
- The baseline 9-cylinder 100 hp (75 kW) rotary engine.
- Delta-Delta
- An 18-cylinder 200 hp (150 kW) two-row rotary engine - Two Deltas on a common crankshaft.
Applications
List from Lumsden
Engines on display
- A preserved Gnome 9 Delta engine is on public display at the Musée des Arts et Métiers, Paris
Specifications (9 Delta)
Gnome 18 Delta-Delta from the 1913 Gnome catalog
General characteristics
- Type: 9-cylinder, single-row, rotary engine
- Bore: 124 mm (4.88 in)
- Stroke: 150 mm (5.91 in)
- Displacement: 16.28 L (993.47 cu in)
- Length: 1,150 mm (45.28 in)
- Diameter: 1,020 mm (40.16 in)
- Dry weight: 135 kg (297.6 lb)
Components
- Valvetrain: Automatic centre-piston inlet valve, one overhead exhaust valve per cylinder.
- Fuel system: one static Bloctube carburettor feeding the crankcase
- Fuel type: 40 / 50 Octane gasoline
- Oil system: Total loss pressure fed
- Cooling system: Air-cooled
Performance
- Power output: 75 kW (100 hp) at 1,200 rpm
- Specific fuel consumption: 362 g/(kW·h) (0.6 lb/(hp·h))
References
Wikimedia Commons has media related to Gnome Delta and Gnome Delta-Delta.
- Lumsden, Alec S.C. (1994). British piston aero-engines and their aircraft (1. publ. in the UK. ed.). Shrewsbury: Airlife Publ. p. 152. ISBN 1-85310-294-6.
- Hauet, André (2001). Les Avions Caudrons. Vol. 1. Outreau: Lela Presse. p. 55. ISBN 2 914017-08-1.
- Moteurs Gnome (PDF) (in French). Paris: Société des Moteurs Gnome. October 1913. pp. 15–18. Retrieved 26 June 2018.
- Angle, Glenn D. (1921). Airplane Engine Encyclopedia. Dayton, Ohio: THE OTTERBEIN PRESS. p. 212.
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