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Klimov M-103

1930s Soviet piston aircraft engine

Field	Value
name	M-103
image	Klimow M-103 MLP 08.jpg
caption	Klimov M-103 on display at the Polish Aviation Museum
engine_type	V12 inline engine
manufacturer	Klimov
first_run	October 1936
number_built	11,681
developed_from	Klimov M-100
developed_into	Klimov M-105

The Klimov M-103 is a V12 liquid-cooled piston aircraft engine used by Soviet aircraft during World War II.

Design and development

The M-103 was a further development of the Klimov M-100 engine that was itself a licensed copy of the French Hispano-Suiza 12Ybrs. It differed from both engines in a number of aspects such as increased compression ratio, increased supercharger ratio, increased rpm's, strengthened cylinder blocks, a new crankshaft, a more aggressive camshaft, and flat bottomed cylinders. Developed in 1936 it was ready for testing in October 1936. The first two models failed testing due to cracked cylinder blocks and the engine was resubmitted for testing in 1937. After passing its trials it was cleared for production in 1938 and 11,681 were produced until 1942 at its factory in Rybinsk. The M-103 was followed by the M-105.

Variants

M-103A - 148 mm rather than 150 mm bore cylinders.
M-103P - A ShVAK cannon fitted to fire through the engine vee.
M-103SP - A proposed version with two engines married to a common crankshaft.
M-103G - With Glycol rather than water cooling.
M-103A-TK - With an experimental Turbo-Supercharger
M-103U - Improved service life variant.
M-104 - Basically a M-103A with a two speed single stage supercharger for increased performance. 232 built.

Applications

Bolkhovitinov S
Beriev MBR-7
Polikarpov TsKB-44
Polikarpov VIT-1 & VIT-2
Tupolev SB
Yakovlev Yak-2
Yakovlev Yak-12
Yakovlev Yak-22

Specifications (M-103A)

| and start a new, fully-formatted line with --

at 2,450 rpm for take-off, boost rated at
at 2,400 rpm at , boost rated at
at 2,450 rpm at |power/weight=1.50 kW/kg (0.916 hp/lb)

References

Notes

Bibliography

Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989.

References

Gunston 1989, p. 90.
Valtion Lentokonetehdas. (1943). "Hispano-Suiza 12Y-31, M-103, M-105. Rakenneselostus, Käyttö – Ja Huoltoohjeet ["Valtion Lentokonetehdas" State Aircraft Factory: Hispano-Suiza 12Y-31, M-103, M-105. Use and Maintenance Instructions.]". Maintenance and spare technical manual of the Finnish Government. The National Library of Finland.
During the war, the Soviet Air Force used automotive gasoline and all kind of mixtures without troubles.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

1930s-aircraft-piston-engines klimov-aircraft-engines v12-aircraft-engines

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