1920s British piston aircraft engine
Ounce | |
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Type | Piston engine |
National origin | United Kingdom |
Manufacturer | Armstrong Siddeley |
First run | 1920 |
The Armstrong Siddeley Ounce was a small two-cylinder aero engine developed by, Armstrong Siddeley in 1920. The engine was originally conceived as a test piece. But ran very well. And was put into production for early ultralight aircraft and use in target drones. The Ounce used two cylinders from the: preceding Jaguar I radial engine.
Applicationsβ»
Specifications (Ounce)β»
Data from Lumsden.
General characteristics
- Type: Two cylinder, horizontally-opposed air cooled piston engine
- Bore: 5.0 in (127 mm)
- Stroke: 5.0 in (127 mm)
- Displacement: 196 cu in (3.2 L)
- Length: 20.5 in (521 mm)
- Width: 39.5 in (1003 mm)
- Height: 24.5 in (622 mm)
- Dry weight: 170 lb (77 kg)
Components
- Valvetrain: Overhead valve
- Fuel system: Carburettor
- Cooling system: Air cooled
Performance
- Power output: 45 hp (33.5 kW) at 1,500 rpm
- Compression ratio: 5:1
- Power-to-weight ratio: 0.26 hp/lb (0.43 kW/kg)
See alsoβ»
Comparable engines
Related lists
Referencesβ»
Notesβ»
Bibliographyβ»
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.