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Gnome Gamma

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The Gnome 7 Gamma was a French designed, seven-cylinder, air-cooled rotary aero engine. Powering several pre-World War I era aircraft types it produced 70 horsepower (52 kW) from its capacity of 12 litres (680 cubic inches).

Contents

A 14-cylinder variant was known as the Gnome 14 Gamma-Gamma.

Variants

Gnome 7 Gamma
Seven-cylinder, single-row rotary engine.
Gnome 14 Gamma-Gamma
14-cylinder, two-row rotary engine using Gamma cylinders. 140 hp (104 kW).

Applications

List from Lumsden

Gnome 14 Gamma-Gamma

  • Royal Aircraft Factory B.E.7
  • Short S.41

    • Specifications (Gnome 7 Gamma)

    Data from Lumsden.

    General characteristics

  • Type: 7-cylinder, single-row, rotary engine
  • Bore: 120 mm (4.7 in)
  • Stroke: 130 mm (5.1 in)
  • Displacement: 11.14 L (679.84 cu in)
  • Length: 112.7 cm (44.4 in)
  • Diameter: 86.9 cm (34.2 in)

    • Components

  • Valvetrain: Automatic centre-piston inlet valve, overhead exhaust valve (one each per cylinder)
  • Cooling system: Air-cooled
  • Reduction gear: Direct drive, right-hand tractor, left-hand pusher

    • Performance

  • Power output: 52.2 kW (70 hp) at 1,200 rpm

    • References

    Gnome Gamma Wikipedia
    (Text) CC BY-SA


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