Walter Castor
1920s Czech piston aircraft engine
From Wikipedia, the free encyclopedia
The Walter Castor was a Czechoslovak seven-cylinder, air-cooled radial engine for powering aircraft that was developed in the late 1920s. The Super Castor was a nine-cylinder development.[1] Castor I production began in 1928, Castor II in 1932 and the Castor III in 1934.
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| Castor | |
|---|---|
| Walter Castor III | |
| Type | Radial aero engine |
| National origin | Czechoslovakia |
| Manufacturer | Walter Aircraft Engines |
| First run | 1929 |
Applications
Engines on display
A preserved example of the Walter Castor engine is on display at the following museum:
Specifications (Castor I)
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Data from Flight.,[2] L'Air 1 December 1929: Les Moteurs Walter[3]
General characteristics
- Type: 7-cylinder radial piston engine
- Bore: 135 mm (5.31 in)
- Stroke: 170 mm (6.69 in)
- Displacement: 17.033 L (1,039.4 cu in)
- Dry weight: 248 kg (547 lb)
Components
- Valvetrain: One intake and one exhaust valve per cylinder
- Fuel system: Zenith carburettor
- Fuel type: 50% Petrol, 50% Benzol
- Cooling system: Air-cooled
Performance
- Power output: 180 kW (240 hp) at 1,750 rpm normal
- Compression ratio: 6:1
- Specific fuel consumption: 0.302 kg/kWh (0.496 lb/(hp⋅h)) at 0.8 - 0.81 specific gravity
- Oil consumption: 0.027 kg/kWh (0.044 lb/(hp⋅h))
- Power-to-weight ratio: 0.78 kW/kg (0.48 hp/lb)
