• Source: Armstrong Siddeley Hyena

The Armstrong Siddeley Hyena was a British aero engine developed by Armstrong Siddeley. Designed in the 1930s, it was an unusual experimental radial engine with inline cylinder banks. It was flown using an Armstrong Whitworth A.W.16 fighter aircraft as a test bed. Unresolved problems with cooling of the rear cylinders prevented the engine from going into production. Few details of this engine survive as company records were lost.




Armstrong Siddeley in-line radial engines


The Hyena arrangement of cylinder banks arranged as a radial engine was continued with further designs, but with little commercial success, with only the Deerhound and Hyena being built.

Hyena
15 cylinders (5 banks of 3 cyl.)
Terrier
14 cylinders (7 banks of 2 cyl.)
Deerhound
21 cylinders (7 banks of 3 cyl.)
Wolfhound
28 cylinders (7 banks of 4 cyl.)
Boarhound
24 cylinders (6 banks of 4 cyl.)
Mastiff
36 cylinders (9 banks of 4 cyl.)




Specifications (Hyena)


Data from Lumsden.




= General characteristics

=
Type: 15-cylinder 3-row radial engine with inline banks.
Bore: 5.3 in (137 mm)
Stroke: 4.88 in (125 mm)
Displacement: 1,615.58 cu in (26.6 L)




= Components

=
Valvetrain: Overhead poppet valves
Supercharger: Medium supercharged
Fuel type: 77 Octane petrol
Cooling system: Air-cooled
Reduction gear: Epicyclic geared, left hand tractor




= Performance

=
Power output: 618 hp at 2,000 rpm at sea level




See also



Comparable engines

Armstrong Siddeley Deerhound
BMW 803
Curtiss H-1640
Daimler-Benz DB 604
Dobrynin VD-4K
Junkers Jumo 222
Lycoming R-7755
Wright R-2160 Tornado
Related lists

List of aircraft engines




References






= Notes

=




= Bibliography

=

Kata Kunci Pencarian:

• Armstrong Siddeley Hyena
• Armstrong Siddeley
• Armstrong Siddeley Deerhound
• Hyena (disambiguation)
• Armstrong Siddeley Jaguar
• Lycoming XR-7755
• Wright R-2160 Tornado
• Junkers Jumo 222
• Dobrynin VD-4K
• List of aircraft engines