Armstrong Siddeley Genet Major

Genet Major, installed in a Southern Martlet ( Shuttleworth Collection )

The Armstrong Siddeley Genet Major is an aircraft engine that the British manufacturer Armstrong Siddeley built from 1928. The air-cooled 5-cylinder radial engine (later: 7-cylinder radial engine) achieved up to 140 bhp (104 kW). The 7-cylinder version for the Royal Air Force was called Civet I . Following the tradition of the manufacturer, the motor was named after the feline family, in this case after the gorse cat (Genet) or the civet .

Variants and applications

Genet Major I.

The Genet Major I was a 5-cylinder radial engine with 105 bhp (78 kW), which was closely related to the Genet I model , but had a larger cylinder bore and a larger piston stroke.

• Avro Avian
• Avro 619
• Avro 624
• Avro 638 Club Cadet
• Cierva C. 19 gyroplane
• Civilian coupe
• Junkers A 50 (some machines of the A 50 ce series )
• Saro Cutty Sark
• Southern Martlet
• Westland IV

Genet Major IA (Civet I)

Armstrong Siddeley Civet

The Genet Major IA (or Civet I at the RAF) was a 7-cylinder variant of the Genet Major I with a nominal output of 145 bhp (107 kW).

• Avro Avian
• Avro Cadet
• Avro Rota
• Ciervo C 30A gyroplane
• RWD-6 (subtype 7-cylinder Genet-Major not specified)
• Saro Cutty Sark
• Westland Wessex

Genet Major III

like Genet Major IA, but with cast valve covers.

Genet Major IV

like Genet Major IA, but with a reduction gear and an output of 160 bhp (118 kW).

• ANBO V

Surviving engines

An Armstrong Siddeley Genet Major powers a Southern Martlet , part of the Shuttleworth Collection , which is flown regularly during the summer months.

Motors on display

• An Armstrong Siddeley Genet Major IA Civet is placed in the Royal Airforce Museum Cosford .
• Two Genet Major in the Aviation Heritage Museum (Western Australia)
• An Armstrong Siddeley Genet Major IV can be seen in the Polish Aviation Museum in Krakow .

Dates (Genet Major IA = Civet I)

Source: Alec Lumsden: British Piston Engines and their Aircraft.

General

• Single-row 7-cylinder radial engine, air-cooled
• Bore: 107.95 mm
• Stroke: 114.3 mm
• Displacement: 7407 cm³
• Length: 985.5 mm
• Diameter: 970 mm
• Weight: 148 kg

Components

• Valve train: Two overhead valves per cylinder
• Fuel: gasoline , 77 octane
• Cooling: air
• Reduction gear: no

power

• Power: 165 bhp (123 kW) at 2425 rpm. at a height of 0 m
• Output per liter: 16.61 kW / l
• Compression: 5: 1
• Power-to-weight ratio : 1.203 kg / kW

Individual evidence

1. ^ ^{A b} Alec Lumsden: British Piston Engines and their Aircraft. Airlife Publishing, Marlborough, Wiltshire 2003, ISBN 1-85310-294-6 , p. 71.
2. ^ The Shuttleworth Collection - Southern Martlet . Retrieved June 28, 2015.
3. ^ Royal Air Force Museum Cosford - Armstrong Siddeley Genet Major 1A 'Civet' www.rafmuseum.org.uk Accessed June 28, 2015.
4. ^ Aviation Heritage Museum. Retrieved on June 28, 2015 (English): "It is possible that this engine was used as a power plant in the airplane built in Fremantle in 1935 and known as the" Fremantle Monoplane "." 
5. ↑ Zbiory - silniki lotnicze ( pl ) In: Muzeum Lotnictwa Polskiego (Polish Aviation Museum) . Lotnictwa Polskiego Museum. Retrieved June 28, 2015.

literature

• Alec Lumsdem: British Piston Engines and their Aircraft. Airlife Publishing, Marlborough 2003, ISBN 1-85310-294-6 .
• Bill Gunston: World Encyclopedia of Aero Engines. Patrick Stephens, Wellingborough 1986, ISBN 0-7509-4479-X , p. 18.

Web links

Commons : Armstrong Siddeley Genet Major  - Collection of images, videos and audio files