Shvetsov ASh-82

The M-62 was the result of development of the M-25, which was a licensed version of the Wright R-1820 Cyclone.

Arkadiy Shvetsov re-engineered the Wright Cyclone design, through the OKB-19 design bureau he headed, for Russian aviation engine manufacturing practices and metric dimensions and fasteners, reducing the stroke, dimensions and weight.

This allowed the engine to be used in light aircraft, where an American-design Twin Cyclone, of some 930 kg (2,045 lb) weight in "dry" condition could not be installed.

[1] The engine entered production in 1940 and saw service in a number of Soviet aircraft.

They were built in the 1950s to 1960s era under licence, both in Czechoslovakia (as the M-82) by the Walter (Motorlet) factory in Prague-Jinonice and in the German Democratic Republic by the VEB Industriewerke Karl-Marx-Stadt.

ASh-82T aircraft engine. The black metal plates mid-engine are baffles that re-direct airflow from the front of the engine (on the right in this image) over the heads of the cylinders.
Family tree of Shvetsov engines