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Rolls-Royce Hawk

Field	Value
name	Hawk
image	Rolls-Royce Hawk duxford.JPG
caption	Preserved Rolls-Royce Hawk
engine_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.

Applications

Avro 504F
Farman MF.7
Royal Aircraft Factory B.E.2
Sage Type 3
SS class blimp (1 example)
SSP class blimp
SSZ class blimp
SST class blimp

Post war one engine (serial number 332) was fitted into a specially built hull and launched on Windermere in 1922 with the name Canfly. With a flywheel added it was directly connected to the boat's propeller without a gearbox. Capable of reaching speeds of 26 knots Canfly was used as the official's boat at several world speed record attempts during the 1920s and 1930s. The boat and engine are now displayed in a working but non-operational state at the Windermere Jetty museum.

Specifications (Hawk I)

| and start a new, fully-formatted line with -- |power/weight=0.2 hp/lb (0.3 kW/kg)

References

Notes

Bibliography

Flight 7 May 1954
British Airships
Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. .
Pugh, Peter. The Magic of a Name – The Rolls-Royce Story: The First 40 Years. Duxford, Cambridge: Icon Books, 2001. .
Taulbut, Derek S. Eagle – Henry Royce’s First Aero Engine, Rolls-Royce Heritage Trust, 2011. .

References

Pugh 2001, p.78.
(2019). "Canfly". Windermere Jetty: Museum of Boats, Steam and Stories.
Lumsden 2003, p.187.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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