Trisha Shetty (Editor)

Gnome Delta

Updated on
Edit
Like
Comment
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit

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).

Contents

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).

Applications

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

  • A preserved Gnome 9 Delta engine is on public display at the Musée des Arts et Métiers, Paris

    • Specifications (9 Delta)

    Data from Lumsden.

    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: 0.362 kg/kW/hr (0.6 lb/hp/hr)

    • References

    Gnome Delta Wikipedia
    (Text) CC BY-SA