| Polaris | |
|---|---|
.jpg.webp) | |
| Walter Polaris | |
| Type | Radial aero engine |
| National origin | Czechoslovakia |
| Manufacturer | Walter Aircraft Engines |
The Walter Polaris was a Czechoslovakian three-cylinder, air-cooled radial engine for powering light aircraft that was developed in the 1930s.[1]
Applications
Engines on display
A preserved example of the Walter Polaris engine is on display at the following museum:
Specifications (Polaris)
General characteristics
- Type: 3-cylinder radial piston engine
- Bore: 105 mm (4.13 in)
- Stroke: 120 mm (4.72 in)
- Displacement: 3.12 L (190 cu in)
- Length: 708 mm (27.9 in)
- Diameter: 926 mm (36.5 in)
- Dry weight: 72 kg (159 lb)
Components
- Valvetrain: One intake and one exhaust valve per cylinder
- Fuel system: Carburettor
- Fuel type: Petrol
- Cooling system: Air-cooled
Performance
- Power output: 44 kW (59 hp) at 1,900 rpm
- Compression ratio: 5.15:1
See also
Comparable engines
Related lists
References
Wikimedia Commons has media related to Walter Polaris.
Notes
- ↑ Gunston 1989, p. 174.
Bibliography
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
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