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Rolls-Royce Buzzard

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1920s British piston aircraft engine

Buzzard

Rolls-Royce Buzzard at theNational Air and Space Museum
Type	Piston V12 engine
Manufacturer	Rolls-Royce Limited
First run	June 1928
Major applications	Blackburn Iris Mark V Blackburn Perth
Number built	100
Developed from	Rolls-Royce Kestrel
Developed into	Rolls-Royce R

TheRolls-Royce Buzzard is a British pistonaero engine of 36.7 litres (2,240 cubic inches)capacity that produced about 800horsepower (600 kW). Designed and built byRolls-Royce Limited it is aV12 engine of 6 in (150 mm)bore and 6.6 in (170 mm)stroke. Only 100 were made. A further development was theRolls-Royce R engine. The Buzzard was developed by scaling-up theRolls-Royce Kestrel Engine.^[1]

List from Lumsden.

Buzzard IMS, (H.XIMS): (1927), Maximum power 955 hp (712 kW), nine engines produced at Derby.
Buzzard IIMS, (H.XIIMS): (1932-33), Maximum power 955 hp (712 kW), reduced propeller drive ratio (0.553:1), 69 engines produced at Derby.
Buzzard IIIMS, (H.XIVMS): (1931-33), Maximum power 937 hp (699 kW), further reduced propeller drive ratio (0.477:1), 22 engines produced at Derby.

Data fromLumsden^[2]

Lumsden, Alec.British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003.ISBN 1-85310-294-6.
Rubbra, A.A.Rolls-Royce Piston Aero Engines - A Designer Remembers. Rolls-Royce Heritage Trust. Historical Series no 16. 1990.ISBN 1-872922-00-7]

Wikimedia Commons has media related toRolls-Royce Buzzard.

By name:	Buzzard Condor Crecy Eagle (V-12) Eagle XVI (X-16) Eagle (H-24) Exe Falcon Goshawk Griffon Hawk Kestrel Merlin Pennine Peregrine "R" Vulture
By company designation:	PV12 Type H Type G Type F Type R