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Gnome 7 Gamma / Gnome 14 Gamma-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:

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

 

 


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