PlaneSpottingWorld welcomes all new members! Please gives your ideas at the Terminal.

Shvetsov M-25

From PlaneSpottingWorld, for aviation fans everywhere

The Shvetsov M-25 was an aircraft radial engine produced in the Soviet Union in the 1930s and 40s, a licensed production variant of the Wright R-1820-F3.

The first M-25s were produced from kits imported from the United States and the main difference between the later M-25 and the R-1820-F3 is the use of metric components. 13,888 M-25s were produced in the USSR at factories in Perm and Kazan. There were a number of subvariants which differed from the original M-25 in having reduction gears, rather than direct drive. Performance was similar to the equivalent Wright engines. The M-25 was later developed into the ASh-62 and was later used as a pattern for the M-70. The M-70 being a twin-row 18 cylinder engine, eventually developed into the ASh-73 which powered the Tupolev Tu-4, a reverse engineered copy of the Boeing B-29.

Family tree of Shvetsov engines

Specifications (Shvetsov M-25)




  • Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens, 175. 
  • Kotelnikov, Vladimir (2005). Russian Piston Aero Engines. Crowood Press Ltd., p.118-119. 

cs:švecov M-25

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "Shvetsov M-25".