The Rolls-Royce Buzzard is a British piston

aero engine An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbin ...

capacity Capacity or capacities may refer to: Mathematics, science, and engineering * Capacity of a container, closely related to the volume of the container * Capacity of a set, in Euclidean space, the total charge a set can hold while maintaining a giv ...

that produced about . Designed and built by

Rolls-Royce Limited Rolls-Royce Limited 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 Crane ( ...

it is a

V12 engine A V12 engine is a twelve-Cylinder (engine), cylinder Internal combustion engine#Reciprocating engines, piston engine where two banks of six cylinders are arranged in a V engine, V configuration around a common crankshaft. V12 engines are more c ...

of bore and

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

. Only 100 were made. A further development was the

Rolls-Royce R The Rolls-Royce R is a British Aircraft engine, aero engine that was designed and built specifically for air racing purposes by Rolls-Royce Limited. Nineteen R engines were assembled in a limited production run between 1929 and 1931. Developed ...

engine. The Buzzard was developed by scaling-up the

Rolls-Royce Kestrel The Rolls-Royce Kestrel (internal type F) is a 21.25 litre (1,295 in³) V-12 aircraft engine from Rolls-Royce. It was their first cast-block engine, and used as the pattern for most of their future piston-engine designs. Used during the interw ...

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 served 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 boat e ...

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 made ...

* Kawanishi H3K *

Short Sarafand The Short S.14 Sarafand was a British biplane flying boat built by Short Brothers. It was planned as a general reconnaissance aircraft for military service. When it was built in 1932 it was the largest aeroplane in the United Kingdom. The Saraf ...

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 V12 aircraft engines