Gnome Gamma
# Gnome Gamma

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).

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 7 Gamma

* Blériot XXI
* Bristol Biplane Type T
* Bristol Prier-Dickson
* Henry Farman Biplane
* Grahame-White Passenger Biplane VIIc
* Handley Page H.P.3
* Morane-Borel seaplane
* Nieuport Monoplane
* Paulhan Biplane
* Royal Aircraft Factory B.E.3
* Royal Aircraft Factory B.E.4
* Short School Biplane
* Short S.32
* Short S.36
* Short S.38
* Short S.45
* Sopwith Three-Seater
* Vickers No.6 Monoplane
* Vickers No.8 Monoplane

### 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
