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 man ...

of capacity that produced about . Designed and built by Rolls-Royce Limited 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 ...

of Bore and Stroke. Only 100 were made. A further development was the

Rolls-Royce R The Rolls-Royce R is a British 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 from the Rolls- ...

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 p ...

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 *

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

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