Lycoming O-480
GO-480 | |
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Lycoming GO-480-B1 on display at the Deutsches Museum Flugwerft Schleissheim | |
Type | Piston aero-engine |
National origin | United States |
Manufacturer | Lycoming Engines |
First run | 1953 |
Major applications | Dornier Do 27 Helio Courier Utva 66 |
Produced | 1954–1986 out of production |
Developed from | Lycoming O-320 |
The Lycoming GO-480 is a family of six-cylinder, horizontally opposed fixed-wing aircraft engines of 479.6 cubic inch (7.86 L) displacement, made by Lycoming Engines. The engine is a six-cylinder version of the four-cylinder Lycoming O-320.
Design and development
GO-480 series engines are installed on a number of different aircraft types.
Variants
All engines have an additional prefix preceding the 480 to indicate the specific configuration of the engine. Although the series is known as the "O-480", there are only geared engines in the series.[2][3] There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different magnetos.
- GO-480
- Normally aspirated Opposed engine, equipped with a carburetor and Gearbox at the front end of the crankshaft to drive the propeller at a lower RPM than the engine.[1]
- GSO-480
- Supercharger driven by the engine, gearbox to drive propeller, and equipped with a carburetor. Designated the O-480-1 by the US military.[1]
- IGSO-480
- Supercharger driven by the engine, gearbox to drive propeller, with fuel Injection. Designated the O-480-3 by the US military.[1]
- IGO-480
- Gearbox to drive propeller, normally aspirated with fuel injection.[1]
Applications
- Aero Commander 560, 560A, 560E and 680, 680E and the pressurized 720 Alti-Cruiser.
- Aermacchi AM3CM (Bosbok)
- Beechcraft Twin Bonanza
- Beechcraft Queen Air
- Dornier Do 27
- Helio Courier
- Pilatus PC-6 Porter
- Soko J-20 Kraguj
- Temco 58
- Utva 66
Specifications (GSO-480-A1A6)
Data from FAA Type Certificate.[3]
General characteristics
- Type: Six-cylinder air-cooled geared supercharged horizontally opposed engine
- Bore: 5.125 in (130 mm)
- Stroke: 3.875 in (98 mm)
- Displacement: 479.6 in3 (7.86 L)
- Dry weight: 498 lb dry (226 kg)
Components
- overhead valvesper cylinder
- Supercharger: 11.27:1 ratio, providing 48" Hg (1.6 atm / 8.8 psi) manifold pressure at sea level at maximum power
- Fuel type: 100 octane rating gasoline
- Cooling system: Air-cooled
- Reduction gear: 77:120 (.642:1)
Performance
- Power output: 340 hp at 3,400 rpm at sea level
- Compression ratio: 7.3:1
See also
Comparable engines
Related lists
References
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
- ^ a b c d e Page listing all variants of the Lycoming O-480 series. Retrieved on 10 January 2009.
- ^ FAA GO-480 Series Type Certificate. Retrieved on 10 January 2009.
- ^ a b FAA Lycoming GSO-480 Series Type Certificate. Retrieved on 10 January 2009.