The Mikulin AM-39 is a Soviet aircraft engine designed in the late 1940s. It is a liquid-cooled, V-12 piston engine that was primarily used in military aircraft. The AM-39 was known for its reliability and performance, making it suitable for various applications during its operational period. This engine produced around 1,500 horsepower and was often used in heavy bombers and fighter aircraft. Its design contributed to the development of subsequent engines in the Mikulin series, influencing the evolution of aviation technology in the Soviet Union.