Rolls-Royce Hawk ( English Rolls-Royce Hawk ) - British aircraft engine developed by Rolls-Royce in 1915. The basis of the design was one row (6 cylinders) of the Eagle engine. The initial power was 75 hp at 1370 rpm, but was gradually increased to 91 hp by February 1916 and 105 hp by October 1918 [1] .
| Rolls royce hawk | |
|---|---|
 | |
| Manufacturer | Rolls-Royce Limited |
| Years of production | 1914-1918 |
| Specifications | |
| Volume | 7.41 l |
| Power | 75 hp (56 kW) at 1350 rpm |
| Power density | 7.56 kW / l |
| Compression ratio | 5.1: 1 |
| Bore | 101.6 mm |
| Piston stroke | 152.4 mm |
| Number of cylinders | 6 |
| Valves | overhead valve with one camshaft |
| Fuel system | twin carburetor Claudel-Hobson FZR |
| Fuel type | petrol |
| Cooling system | liquid |
| Dimensions | |
| Length | 1190 mm |
| Width | 597 mm |
| Height | 902 mm |
| Dry weight | 175.5 kg. |
After the prototype was created by Rolls-Royce, Hawk was manufactured under license from Brasil Straker in Bristol from 1915 to 1918. During this time, 204 engines were built, which have earned a reputation as very reliable.
Many engines of this type were used as a power plant for coast guard type SSZ airships, of which 76 were built.
Content
Application
Aircraft
- Avro 504 F
- Farman mf.7
- Royal Aircraft Factory BE2
Airships
- SS type
- SSP type
- SSZ type
- SST type
Specification (Hawk I)
Main characteristics
- Type: 6-cylinder in-line liquid cooling engine
- Cylinder Bore: 101.6 mm
- Piston stroke: 152.4 mm
- Engine capacity: 7.41 liters.
- Length: 1190 mm
- Width: 597 mm
- Height: 902 mm
- Dry weight: 175.5 kg
Features of operation
- Valves: upper valve gas distribution mechanism with one camshaft
- Fuel system: twin carburetor Claudel-Hobson FZR
- Fuel type: gasoline
- Cooling system: liquid
Performance
- Output power: 75 hp (56 kW) at 1350 rpm
- Power density : 7.56 kW / l
- Compression ratio : 5.1: 1
- Power density by weight: 0.3 kW / kg
See also
- Mercedes D.II
Notes
- β Pugh 2001, p.78.
Literature
- Flight 7 May 1954
- British airships
- Lumsden, Alec. British Piston Engines and their Aircraft . Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6 .
- Pugh, Peter. The Rolls-Royce Story: The First 40 Years . Duxford, Cambridge: Icon Books, 2001. ISBN 1-84046-151-9 .