Mikulin AM-37

The Mikulin AM-37 was a Soviet aircraft piston engine designed prior to Russia's entry into World War II. An improved version of the Mikulin AM-35 V-12 engine, it was only produced in small numbers because of its unreliability.

Development
Design work on a development of the AM-35 with boosted supercharging and an intercooler positioned behind the supercharger began on the factory's initiative in December 1939. A batch of ten prototypes was completed in 1940 and bench-testing began on 5 January 1941. It passed its State acceptance trials the following April and was approved for production. It was tested in a variety of aircraft, but proved to be unreliable and prone to overheating. Factory No. 24 in Moscow built only twenty-nine AM-37s, as the new engine was designated, in 1941 before the German advance forced the factory to evacuate in October. Mikulin had been unable to resolve the issues with the AM-37 in the meantime and production was not resumed.

Variants

 * AM-37A
 * Planned version to be tested in February 1940, but no information if it was tested or it was even completed. 1600 hp and a weight of 850 kg.


 * AM-37TK
 * TK for toorbokompressor. Planned version with a turbocharger, no further information known.


 * AM-37P
 * P for Pushechnyy or cannon. A 1940 project for a model with an autocannon mounted in the space between the cylinders, firing through a hollow reduction-gear shaft. No further information available.


 * Am-37u/v or AM-37UV
 * UV for udlinyonniy val or lengthened shaft. An engine with a lengthened shaft and remote gearing for use in the Gudkov G-1 fighter that carried the engine behind the pilot. Ordered developed in 1940 and design work started in 1941, but it was not completed.

Applications

 * Mikoyan-Gurevich MiG-1
 * Mikoyan-Gurevich MiG-3
 * Mikoyan-Gurevich DIS
 * Polikarpov TIS
 * Tupolev Tu-2
 * Yermolaev Yer-2