| Culverin | |
|---|---|
 | |
| Cutaway view of a Junkers Jumo 205, a decreased capacity version of the Jumo 204/Culverin. | |
| Type | Aircraft Diesel engine |
| Manufacturer | D. Napier & Son |
| First run | 1934 |
| Major applications | Blackburn Iris (test bed only) Fairey III |
TheNapier Culverin was a licensed built version of theJunkers Jumo 204 six-cylindervertically opposed liquid-cooleddiesel aircraft engine built byD. Napier & Son. The name is derived from the French word,culverin, for an early cannon or musket.[1] First flown in 1938, the engine went into limited production, with testing carried out on aBlackburn Iris V biplane flying-boat aircraft andFairey IIIF biplane.[1]
The six cylinders were arranged vertically. Twocrankshafts were located at the top and bottom of the engine and coupled together by gears. The inlet and exhaust ports were controlled by the pistons, as in a petrol-fuelledtwo-stroke engine.
Data from[1]