Armstrong Siddeley Genet

1920s British piston aircraft engine

Genet

Preserved Armstrong Siddeley Genet at the Shuttleworth Collection
Type  | Radial engine
National origin | United Kingdom
Manufacturer  | Armstrong Siddeley
First run  | 1926
Developed into | Armstrong Siddeley Genet Major

The Armstrong Siddeley Genet  is a five-cylinder, air-cooled, radial engine for aircraft use built in the UK, first run in 1926. It developed 80 hp at 2,200 rpm in its final form and was a popular light aircraft powerplant. Following the company tradition with a slight deviation the engine was named after the Genet, a catlike animal of the same order but different family.[1]

## Variants and applications

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### Genet I

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Genet I producing 65 hp.

* Avro 618 Ten
* Avro Avian prototype
* Blackburn Bluebird I
* BFW M.23
* Cierva autogyros. C.9 and C.10
* Drzewiecki JD-2
* Fleet Fawn
* Junkers A50 Junior
* Medwecki and Nowakowski M.N.5
* Saro Cutty Sark
* Southern Martlet
* Westland-Hill Pterodactyl

### Genet II

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The Genet II produced 80 hp due to an increased compression ratio of 5.25:1.[2]

* ANEC IV
* Avro Avian
* Blackburn Bluebird II
* Cierva C.19 autogyro
* Darmstadt D-18
* de Havilland DH.60 Moth
* Fairchild 21
* Klemm Kl 25
* Nicholas-Beazley NB-8G
* Parnall Imp
* Robinson Redwing II
* Southern Martlet
* Westland Widgeon

### Genet IIA

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Also 80 hp and with minor differences to the Mark I.

* Robinson Redwing II

## Engines on display

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Two preserved Armstrong Siddeley Genets are on static display at the Shuttleworth Collection, Old Warden, Bedfordshire.

A preserved Genet is on display at the Australian National Aviation Museum, Moorabbin, Victoria, Australia

There is a restored Genet at the New England Air Museum, Bradley Int'l Airport, Windsor Locks, CT.

A Genet is on display at the Aviation Heritage Museum (Western Australia).[3]

## Specifications (Genet I)

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Data from Lumsden.[4]

### General characteristics

* Type: 5-cylinder single-row radial
* Bore: 4 in (101.6 mm)
* Stroke: 4 in (101.6 mm)
* Displacement: 251.43 cu in (4.1 L)
* Length: 28.5 in (724 mm)
* Diameter: 34 in (863.6 mm)
* Dry weight: 168 lb (76 kg)

### Components

* Valvetrain: Overhead poppet valves
* Cooling system: Air-cooled
* Reduction gear: Direct drive, Left hand tractor

### Performance

* Power output: 65 hp at 1,800 rpm
* Compression ratio: 5.2:1
* Power-to-weight ratio: 0.38 hp/lb

## See also

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Related development

* Armstrong Siddeley Genet Major

Comparable engines

* BMW X
* Warner Scarab Junior

Related lists

* List of aircraft engines

## References

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### Notes

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1. ^ Sanderson, Living Mammals of The World, NY, c.1967
2. ^ Lumsden 2003, p.69.
3. ^ "Aviation Heritage Museum | Bull Creek, Perth".
4. ^ Lumsden 2003, p.68

### Bibliography

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

## External links

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Wikimedia Commons has media related to Armstrong Siddeley Genet.

* Armstrong Siddeley Genet at the Australian National Aviation Museum
* "Armstrong Siddeley Genet". Flight. No. 26 August 1926. pp. 531–2.

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Armstrong Siddeley aero engines

Piston engines|

* Boarhound
* Cheetah
* Civet
* Cougar
* Deerhound
* Genet
* Genet Major
* Hyena
* Jaguar
* Jaguar Major
* Leopard
* Lynx
* Lynx Major
* Mongoose
* Ounce
* Panther
* Puma
* Serval
* Tiger (V12)
* Tiger (Radial)
* Wolfhound

Turbojets|

* Adder
* ASX
* Sapphire
* Viper

Turboprops|

* ASP
* Double Mamba
* Mamba
* Python

Rocket engines|

* Beta
* Snarler
* Screamer
* Stentor
* Gamma

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