The Napier Culverin was a licensed built version of the
Junkers Jumo 204
The Jumo 204 was an opposed-piston, inline, liquid-cooled 6-cylinder aircraft Diesel engine produced by the German manufacturer Junkers. It entered service in 1932. Later engines in the series, the Jumo 205, Jumo 206, Jumo 207 and Jumo 208, diffe ...
six-cylinder
vertically opposed liquid-cooled
diesel aircraft engine
Diesel may refer to:
* Diesel engine, an internal combustion engine where ignition is caused by compression
* Diesel fuel, a liquid fuel used in diesel engines
* Diesel locomotive, a railway locomotive in which the prime mover is a diesel engine ...
built by
D. Napier & Son. The name is derived from the French word,
culverin
A culverin was initially an ancestor of the hand-held arquebus, but later was used to describe a type of medieval and Renaissance cannon. The term is derived from the French "''couleuvrine''" (from ''couleuvre'' "grass snake", following the La ...
, for an early cannon or musket.
[Lumsden 2003, p.170.] First flown in 1938, the engine went into limited production, with testing carried out on a
Blackburn Iris V biplane flying-boat aircraft and
Fairey IIIF
The Fairey Aviation Company Fairey III was a family of British reconnaissance biplanes that enjoyed a very long production and service history in both landplane and seaplane variants. First flying on 14 September 1917, examples were still in us ...
biplane.
[Lumsden 2003, p.170.]
Design
The six cylinders were arranged vertically. Two
crankshaft
A crankshaft is a mechanical component used in a piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating shaft containing one or more crankpins, that are driven by the pistons via the connecting ...
s 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-fuelled
two-stroke engine
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of t ...
.
Specifications (Culverin)
See also
Comparable engines
*
Junkers Jumo 205
The Jumo 205 aircraft engine was the most famous of a series of aircraft diesel engines produced by Junkers. The Jumo 204 first entered service in 1932. Later engines of this type comprised the experimental Jumo 206 and Jumo 208, with the Jumo ...
Related lists
*
List of aircraft engines
This is an alphabetical list of aircraft engines by manufacturer.
0–9 2si
*2si 215
*2si 230
* 2si 430
* 2si 460
*2si 500
* 2si 540
* 2si 690
3W
''Source: RMV''
*3W 106iB2
*3W-110
*3W-112
*3W-170
*3W-210
*3W-220
A
Abadal (Fr ...
References
Notes
Bibliography
* Lumsden, Alec. ''British Piston Engines and their Aircraft''. Marlborough, Wiltshire: Airlife Publishing, 2003. .
External links
Photo of a Napier Culverin at Napierheritage.org
{{Napierengines
Culverin
A culverin was initially an ancestor of the hand-held arquebus, but later was used to describe a type of medieval and Renaissance cannon. The term is derived from the French "''couleuvrine''" (from ''couleuvre'' "grass snake", following the La ...
Two-stroke diesel engines
Aircraft diesel engines
Opposed piston engines
1930s aircraft piston engines
Diesel engines by model
Diesel engines by maker