Rolls-Royce Hawk
| Hawk | |
|---|---|
 |
|
| Preserved Rolls-Royce Hawk | |
| Type | Liquid-cooled inline piston engine |
| Manufacturer | Rolls-Royce Limited |
| First run | 1914 |
| Major applications | SSZ class blimp |
| Number built | 205 |
The Rolls-Royce Hawk was a British aero engine designed by Rolls-Royce in 1915. Derived from one bank of six cylinders of the Rolls-Royce Eagle, it produced 75 horsepower at 1,370 rpm. Power was progressively increased to 91 hp by February 1916, and 105 hp by October 1918.
After Rolls-Royce made the prototypes, the Hawk was manufactured under licence by Brazil Straker in Bristol between 1915 and 1918. During this period 204 engines were built, and the Hawk earned a reputation for high reliability.
Many engines of this type were used to power the SSZ class coastal patrol airships of which 76 were built.
Data from Lumsden
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