The Rolls-Royce Buzzard was a British piston

aero engine An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many ...

of capacity that produced about . Designed and built by

Rolls-Royce Limited Rolls-Royce was a British luxury car and later an aero-engine manufacturing business established in 1904 in Manchester by the partnership of Charles Rolls and Henry Royce. Building on Royce's good reputation established with his cranes, they ...

it is a

V12 engine A V12 engine is a twelve-cylinder piston engine where two banks of six cylinders are arranged in a V configuration around a common crankshaft. V12 engines are more common than V10 engines. However, they are less common than V8 engines. The f ...

of Bore and

Stroke A stroke is a disease, medical condition in which poor cerebral circulation, blood flow to the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemorr ...

. Only 100 were made. A further development was the Rolls-Royce R engine. The Buzzard was developed by scaling-up the

Rolls-Royce Kestrel The Kestrel or type F is a 21 litre (1,300 in³) 700 horsepower (520 kW) class V-12 aircraft engine from Rolls-Royce, their first cast-block engine and the pattern for most of their future piston-engine designs. Used during the interwar ...

Engine.Rubbra 1990, p. 59.

Variants

''List from Lumsden''. ;Buzzard IMS, (H.XIMS) :(1927), Maximum power , nine engines produced at Derby. ;Buzzard IIMS, (H.XIIMS) :(1932-33), Maximum power , reduced propeller drive ratio (0.553:1), 69 engines produced at Derby. ;Buzzard IIIMS, (H.XIVMS) :(1931-33), Maximum power , further reduced propeller drive ratio (0.477:1), 22 engines produced at Derby.

Applications

* Blackburn Iris Mark V * Blackburn M.1/30 *

Blackburn Perth The Blackburn Perth was a British flying boat which was in service during the interwar period. It was essentially an upgraded Iris, and hence the largest flying-boat to serve with the Royal Air Force at the time (and the largest biplane flying ...

Handley Page H.P.46 The Handley Page H.P.46 was a two-seat, single-engined biplane built to an Air Ministry specification for a carrier-based torpedo bomber. With an advanced combination of high lift, slow flying controls it was beset by handling problems and ma ...

* Kawanishi H3K * Short Sarafand *

Vickers Type 207 The Vickers Type 207 was a single-engined two-seat biplane designed as a shipborne torpedo bomber to an early 1930s specification. Structurally innovative, only one was built. Development The Vickers Type 207 was often known as the Vickers M.1 ...

Specifications (Buzzard IMS)

References

Notes

Bibliography

* Lumsden, Alec. ''British Piston Engines and their Aircraft''. Marlborough, Wiltshire: Airlife Publishing, 2003. . * Rubbra, A.A.''Rolls-Royce Piston Aero Engines - A Designer Remembers''. Rolls-Royce Heritage Trust. Historical Series no 16. 1990. ]

External links

''Flight'' magazine - Period Rolls-Royce Buzzard advertisement, August 1933
{{Rolls-Royce aeroengines Rolls-Royce aircraft piston engines, Buzzard 1920s aircraft piston engines