Armstrong Siddeley Hyena
Armstrong Siddeley Hyena was the name of a piston aircraft engine made by the British manufacturer Armstrong Siddeley , which was intended for use in military and civil aviation.
The air-cooled 15-cylinder triple -star engine presented in 1933 was installed on a trial basis in the Armstrong Whitworth AW16 fighter aircraft ( aircraft registration G-ABKF). For this purpose, the aircraft was given a special engine fairing, which had five air inlet openings that could be changed in size. The then chief pilot Charles Turner-Hughes completed the first flight on October 24, 1933 and the subsequent testing . Originally, it was planned to install the engine in two other models. On the one hand in the single -seater Armstrong Whitworth AW28 and on the other hand in the two-seat multi-purpose aircraft Armstrong Whitworth AW37 . Since there was no series production because the problem of cooling the rear star could not be satisfactorily solved, the engine was practically without further use.
The three stars of the engine were arranged one behind the other and not offset, so that three cylinders were in a row. Despite a fan built in to support the cooling, this remained inadequate. The motor had a planetary reduction gear to drive the propeller .
Technical specifications
| drilling | 134.6 mm |
| Hub | 123.95 mm |
| Displacement | 26.6 l |
| Starting power | 618 hp |
swell
- British Piston Aero Engines and their Aircraft. Alec Lumsden, ISBN 1853102946 .
- Oliver Tapper: Armstrong Whitworth aircraft since 1913. Putnam, ISBN 0370100042 .