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The Rolls-Royce Buzzard was a British piston aero engine of 36.7 litres (2,240 cubic inches) capacity that produced about 800 horsepower (600 kW). Designed and built by Rolls-Royce Limited it is a V12 engine of 6 in (150 mm) Bore and 6.6 in (170 mm) Stroke. Only 100 were made. A further development was the Rolls-Royce R engine. The Buzzard was developed by scaling-up the Rolls-Royce Kestrel Engine.[1]

Buzzard
Rolls-Royce Buzzard at the National 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

Variants

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.

Applications

• Blackburn Iris Mark V
• Blackburn M.1/30
• Blackburn Perth
• Handley Page H.P.46
• Kawanishi H3K
• Short Sarafand
• Vickers Type 207

Specifications (Buzzard IMS)

Data from Lumsden[2]

General characteristics

• Type: Liquid-cooled V12 piston engine
• Bore: 6 in (152.4 mm)
• Stroke: 6.6 in (167.6 mm)
• Displacement: 2,239.3 in³ (36.7 L)
• Length: 75.7 in (1,923 mm)
• Width: 30.6 in (777 mm)
• Height: 44.4 in (1,128 mm)
• Dry weight: 1,140 lb (517 kg)

Components

• Valvetrain: Overhead camshaft
• Supercharger: Single-stage supercharger
• Fuel type: 73-77 octane petroleum
• Cooling system: Liquid-cooled

Performance

• Power output: 800 hp (600 kW)
• Specific power: 0.36 hp/in³ (16.3 kW/L)
• Compression ratio: 5.5:1
• Power-to-weight ratio: 0.7 hp/lb

See also

• Rolls-Royce aircraft piston engines

Related development

• Rolls-Royce Kestrel
• Rolls-Royce R

Comparable engines

• Daimler-Benz DB 600
• Fiat AS.3
• Rolls-Royce Griffon

Related lists

• List of aircraft engines

References

Notes

Bibliography

External links

Wikimedia Commons has media related to Rolls-Royce Buzzard.

• Flight magazine - Period Rolls-Royce Buzzard advertisement, August 1933

На других языках

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- [en] Rolls-Royce Buzzard

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[fr] Rolls-Royce Buzzard

La Rolls-Royce Buzzard est un moteur d'avion à pistons britannique d'une cylindrée de 36,7 litres produisant environ 800 ch (588 kW). Conçu et construit par Rolls-Royce Limited, il s'agit d'un moteur V12 avec un alésage de 152 mm et 167,64 mm de course. Seulement 100 exemplaires de ce moteur furent fabriqués. Un autre développement ultérieur donna le moteur Rolls-Royce R. Le Buzzard a été développé en augmentant les capacités du Rolls-Royce Kestrel[1].

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[it] Rolls-Royce Buzzard

Il Rolls-Royce Buzzard era un motore aeronautico 12 cilindri a V prodotto dalla britannica Rolls-Royce Limited alla fine degli anni venti.

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[ru] Rolls-Royce Buzzard

Роллс-Ройс Базард (англ. Rolls-Royce Buzzard), также известный под литерой H — британский поршневой авиационный двигатель, разработанный фирмой «Роллс-Ройс» в конце 20-х гг. XX в. В соответствии с системой фирменных обозначений получил название в честь хищной птицы — сарыча.

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