a System for indicating aircraft engine.
This system started to be used from in April 1942, (04/42), the purpose of the introduction of this system should be to eliminate inaccuracies in the labelling, which arose previously separate labelling of aeronautical engines by the army and naval air force, it was the engines that used both ingredients. The old label was no longer cluttered and complex.
The new label should have four basic parts: (ex. Ha-45-23 engine, air-cooled dvojhvězdicový osmnáctiválec, bore 130 mm stroke 150 mm, model 23 - u of this model has removed the problem of drop in boost pressure, see Nakajima Ki-84)
and.) Ha- (Hatsudoki) japanese engine
b.) the First digit to identify the type and version of the engine with regard to the cooling and the arrangement and number of cylinders
1. air-cooled in-line
2. air-cooled radial
3. air-cooled dvojhvězdicový čtrnáctiválec
4. air-cooled dvojhvězdicový osmnáctiválec
5. air-cooled vícehvězdicový and víceválcový engine
6. liquid-cooled engine
7. liquid-cooled víceválcový engine (more than 12)
8. diesel engine
9. special engines
c.) Second digit divides the engines by bore and stroke the engine cylinder [mm]
1. 140/130
2. 150/170
3. 140/150
4. 140/160
5. 130/150
0. 130/160
d.) the Last two digits of the represented the execution, or engine model of a given type.
Must say that the new designation was used especially in the navy, just as an additional and preferred was the designation of the sea, it also took over the scientific literature. .
This system started to be used from in April 1942, (04/42), the purpose of the introduction of this system should be to eliminate inaccuracies in the labelling, which arose previously separate labelling of aeronautical engines by the army and naval air force, it was the engines that used both ingredients. The old label was no longer cluttered and complex.
The new label should have four basic parts: (ex. Ha-45-23 engine, air-cooled dvojhvězdicový osmnáctiválec, bore 130 mm stroke 150 mm, model 23 - u of this model has removed the problem of drop in boost pressure, see Nakajima Ki-84)
and.) Ha- (Hatsudoki) japanese engine
b.) the First digit to identify the type and version of the engine with regard to the cooling and the arrangement and number of cylinders
1. air-cooled in-line
2. air-cooled radial
3. air-cooled dvojhvězdicový čtrnáctiválec
4. air-cooled dvojhvězdicový osmnáctiválec
5. air-cooled vícehvězdicový and víceválcový engine
6. liquid-cooled engine
7. liquid-cooled víceválcový engine (more than 12)
8. diesel engine
9. special engines
c.) Second digit divides the engines by bore and stroke the engine cylinder [mm]
1. 140/130
2. 150/170
3. 140/150
4. 140/160
5. 130/150
0. 130/160
d.) the Last two digits of the represented the execution, or engine model of a given type.
Must say that the new designation was used especially in the navy, just as an additional and preferred was the designation of the sea, it also took over the scientific literature. .