Gnome Delta

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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).

Delta
Type Rotary aero engine
Manufacturer Société des Moteurs Gnome
First run c.1909
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).[1]

Applications

List from Lumsden

Engines on display

Specifications (9 Delta)

Data from Lumsden.[1][3]

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 [4]
  • 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

See also

Comparable engines
Related lists

References

Notes

  1. 1.0 1.1 Lumsden 2003, p. 152.
  2. Hauet (2001) p.55
  3. Lua error in package.lua at line 80: module 'strict' not found.
  4. Angle 1921, p. 212.

Bibliography

  • 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.
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