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The Armstrong Siddeley Tiger was a British 14-cylinder air-cooled aircraft radial engine developed by Armstrong Siddeley in the 1930s from their Jaguar engine. The engine was built in a number of different versions but performance and dimensions stayed relatively unchanged. The Tiger VIII was the first British aircraft engine to use a two-speed supercharger.[1][2]

Tiger
Armstrong Siddeley Tiger at the Science Museum (London)
Type	Radial engine
Manufacturer	Armstrong Siddeley
First run	1932
Major applications	Armstrong Whitworth Ensign Blackburn Shark

Applications

• Armstrong Whitworth A.W.19
• Armstrong Whitworth AW.23
• Armstrong Whitworth A.W.29
• Armstrong Whitworth Ensign
• Armstrong Whitworth Whitley
• Blackburn B-6
• Blackburn B-7
• Blackburn Shark
• Blackburn Ripon
• Fairey G4/31
• Handley Page H.P.51
• Short Calcutta

Engines on display

A preserved Armstrong Siddeley Tiger is on display at the Science Museum (London).

Specifications (Tiger VIII)

Data from Lumsden.[3]

General characteristics

• Type: 14-cylinder supercharged two-row air-cooled radial engine
• Bore: 5.5 in (139.7 mm)
• Stroke: 6.0 in (152.4 mm)
• Displacement: 1,995 in³ (32.7 L)
• Length: 64.6 in (1,641 mm)
• Diameter: 50.8 in (1,290 mm)
• Dry weight: 1,287 lb (584 kg)

Components

• Valvetrain: Two pushrod-actuated valves per cylinder
• Supercharger: Two-speed centrifugal type supercharger, first gear ratio 5.34:1, second gear 7.96:1.
• Fuel system: Claudel-Hobson carburettor
• Fuel type: 87 octane rating petrol
• Cooling system: Air-cooled
• Reduction gear: Spur, 0.594:1

Performance

• Power output:
  
• 907 hp (677 kW) at 2,375 rpm for takeoff
• 850 hp (634 kW) at 2,450 rpm at 7,150 ft (2,180 m) – first supercharger gear
• 771 hp (575 kW) at 2,450 rpm at 16,240 ft (4,950 m) – second supercharger gear
• 582 hp (434 kW) at 2,200 rpm economy cruise
• Specific power: 0.45 hp/in³ (20.7 kW/L)
• Compression ratio: 6.25:1
• Specific fuel consumption: 0.49 lb/(hp•h) (294 g/(kW•h))
• Oil consumption: 0.21–0.42 oz/(hp•h) (8–16 g/(kW•h))
• Power-to-weight ratio: 0.70 hp/lb (1.16 kW/kg)

See also

Related development

• Armstrong Siddeley Jaguar
• Armstrong Siddeley Panther

Related lists

• List of aircraft engines

References

Notes

Bibliography

External links

• Oldengine.org

На других языках

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[de] Armstrong Siddeley Tiger

Der Armstrong Siddeley Tiger ist ein Flugmotor, den der britische Hersteller Armstrong Siddeley ab 1932 baute. Der zweireihige 14-Zylinder-Sternmotor hat einen Hubraum von 32.692 cm³. Der Tiger wurde aus dem Modell Jaguar entwickelt. Es gab etliche Varianten, die aber in Leistung und Größe nur unwesentlich vom Basismodell abwichen. Der Tiger VIII war der erste britische Flugmotor mit einem Kompressor, der mit zwei verschiedenen Geschwindigkeiten betrieben werden konnte.[1][2]

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- [en] Armstrong Siddeley Tiger

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[fr] Armstrong Siddeley Tiger

Le Armstrong Siddeley Tiger était un moteur d'avion britannique à 14 cylindres en étoile, refroidi par air et développé par Armstrong Siddeley dans les années 1930 à partir de son moteur Jaguar. Le moteur a été construit dans un certain nombre de versions différentes, mais les performances et les dimensions sont restées relativement les mêmes. Le Tiger VIII fut le premier moteur d'avion britannique à utiliser un compresseur à deux vitesses[1],[2].

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[it] Armstrong Siddeley Tiger

L'Armstrong Siddeley Tiger era un motore aeronautico radiale a 14 cilindri doppia stella raffreddato ad aria sviluppato dall'azienda britannica Armstrong Siddeley negli anni trenta.

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[ru] Armstrong Siddeley Tiger

Armstrong Siddeley Tiger — британский поршневой 14-цилиндровый двухрядный авиадвигатель воздушного охлаждения, разработанный в 1932 году. В его конструкции были использованы элементы одного из предыдущих моторов Armstrong Siddeley, 14-цилиндрового Jaguar.

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