This article refers to the two-valve Gnome rotary engine (automatic inlet valve in the piston crown and pushrod operated exhaust valve). For the 100 hp Monosoupape engine go to Gnome Monosoupape 9 Type B-2, (Monosoupape engines had a single pushrod operated exhaust valve and inlet ports exposed by the piston near bottom dead centre).
|Type||Rotary aero engine|
|Manufacturer||Société des Moteurs Gnome|
|Major applications||Avro 500
Vickers F.B.9 Gunbus
|Unit cost||22,000 Francs|
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 horsepower (75 kW) from its capacity of 16 litres (990 cubic inches).
List from Lumsden
- Avro Type 500
- Caudron Type L
- Pemberton-Billing P.B.25
- Royal Aircraft Factory S.E.2
- Vickers No.7 Monoplane
- Vickers F.B.9 Gunbus
Engines on display
Specifications (9 Delta)
- 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)
- 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
- Power output: 75 kW (100 hp) at 1,200 rpm
- Specific fuel consumption: 0.362 kg/kW/hr (0.6 lb/hp/hr)
- Comparable engines
- Related lists
- Lumsden 2003, p. 152.
- Hauet (2001) p.55
- Moteurs Gnome (PDF) (in French). Paris: Société des Moteurs Gnome. October 1913. pp. 6–10. Retrieved 3 October 2014.
- Angle 1921, p. 212.
- Angle, Glenn D. Airplane Engine Encyclopedia. Dayton, Ohio: The Otterbein Press, 1921.
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
- Hauet, André (2001). Les Avions Caudrons. 1. Outreau: Lela Presse. ISBN 2 914017-08-1.