Mikulin AM-42

The Mikulin AM-42 was a 1940s Soviet aircraft piston engine designed by Alexander Mikulin.[1] Representing a high-output version of the AM-38F, the AM-42 was used in the Ilyushin Il-1 fighter, and the Il-8 and Il-10 ground attack aircraft.

Type Liquid-cooled V-12 piston engine
National origin USSR
Manufacturer Mikulin
First run November 1942
Major applications Ilyushin Il-10
Number built 10,232
Developed from Mikulin AM-38
Developed into Mikulin AM-43


The AM-42 was a low-altitude engine for attack aircraft that evolved from the earlier AM-38F. Compared to the AM-38F it had a reduced compression ratio, increased supercharging, strengthened and counterbalanced crankshaft, strengthened connecting rods, strengthened pistons and a revised oil system. The AM-42 was developed by the design bureau of Factory No. 24 now called the Salyut factory in Moscow. The first examples were produced in November 1942 and passed its 50-hour Factory tests in January 1943. In September 1943 the AM-42 began State tests but these were unfinished due to piston damage while testing. It wasn't until spring 1944 that a strengthened version of the AM-42 completed its State tests. The AM-42 was produced in large numbers between 1944–1948 and an improved 400 hour service life version was produced from 1951–1954. The majority of engines were produced at Factory No. 24 which was evacuated to Kuybyshev at the end of 1941. 10,232 were built by the time it was phased out of production in the USSR in 1954. In addition to being produced in the USSR it was also produced in Czechoslovakia as the M-42 at the Dimitrov factory to power the Avia B-33 a Czech built version of the IL-10.[2]


  • AM-42TK: A version with a TK-300B turbo-supercharger.
  • AM-42FNV: A fuel injected version.
  • AM-42B-TK: A version with two TK-300B turbo-superchargers.
  • AM-42FB-TK: A version with two TK-1A turbo-superchargers.[3]

Specifications (AM-42)

Data from Kotelnikov.[4]

General characteristics


  • Supercharger: Single-speed GCS
  • Cooling system: Liquid-cooled


See also

Related development

Comparable engines

Related lists



  1. Gunston 1989, p. 104.
  2. Kotelnikov 2005, p. 114.
  3. Kotelnikov 2005, p. 114.
  4. Kotelnikov 2005, p. 114.


  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
  • Kotelnikov, Vladimir. Russian Piston Aero Engines. Marlborough, Wiltshire. The Crowood Press Ltd. 2005. ISBN 1-86126-702-9.
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