Mikulin AM-34

AM-34
Mikulin M-34, 1932
Type Liquid-cooled V12 engine
National origin Soviet Union
Designer Alexander Mikulin
First run 1931
Major applications Tupolev TB-3
Produced 1934–1943
Number built 10,538
Developed into Mikulin AM-35

The Mikulin AM-34 (M-34) was a Soviet mass-produced, liquid-cooled, aircraft engine of domestic design. Its initial development was troubled, but it eventually became one of the most successful Soviet aircraft engines of the 1930s. It was utilized on numerous aircraft, including the Beriev MBR-2, Tupolev TB-3, Tupolev TB-4, Tupolev ANT-20, Petlyakov Pe-8, Kalinin K-7, Polikarpov I-17, and Bolkhovitinov DB-A, as well as the G-5 class and various prototype motor torpedo boats. A version of the maritime model was adapted for use in several prototype heavy tanks in 1939, although none was placed into production.