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Li-2 HA-LIX AS-62IR 02.jpg
Shvetsov Ash-62 installed in a Lisunov Li-2 (Cowling removed).
Type Radial engine
Manufacturer Shvetsov
First run 1937
Number built 40,631
Developed from Shvetsov M-25
Developed into Shvetsov ASh-82

The Shvetsov ASh-62 (designated M-62 before 1941) is a nine-cylinder, air-cooled, radial aircraft engine produced in the Soviet Union. A version of this engine is produced in the People's Republic of China as the HS-5.

Design and development[edit]

The ASh-62 was a development of the Wright R-1820 Cyclone that had been built in Russia under licence as the Shvetsov M-25, the main improvements including a two-speed supercharger and a more efficient induction system. Power was increased from the Cyclone's 775 hp to 1,000 hp. First run in 1937, licenced versions are still in production by WSK "PZL-Kalisz" in Poland as the ASz-62 (as of 2007). The Ash-62 was also produced in China. It is estimated that 40,361 were produced in the USSR.

Polish-built ASz-62IR engines are compatible with FAR-33 requirements. Further developments in Poland are the K9-AA, K9-BA and K9-BB engines, with take-off power of 1178 hp (860 kW), indicated power 698 kW.

The M-63 was an improved version of the M-62 with power output increased to 821 kW (1,100 hp) at 2,300 rpm for takeoff and 671 kW (900 hp) at 2,200 rpm at 4,500 m (14,764 ft) due to a greater compression ratio of 7.2:1 and a higher redline.


ASz-62 installed in an Antonov An-2 (Cowling installed)

Specifications (M-62)[edit]

Family tree of Shvetsov engines

Data from [1]

General characteristics

  • Type: Nine-cylinder single-row supercharged air-cooled radial engine
  • Bore: 156 mm (6.12 in)
  • Stroke: 175 mm (6.87 in)
  • Displacement: 29.8 l (1,819 in³)
  • Length: 47.76 in (1,213 mm)
  • Diameter: 54.25 in (1,378 mm)
  • Dry weight: 560kg (1,235 lb)





  1. ^ Liss 1966, p. 9


  • Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. p. 154. 
  • Russian Aviation Museum
  • Venik's Aviation
  • Kotelnikov, Vladimir (2005). Russian Piston Aero Engines. Crowood Press Ltd. pp. 119–122. 
  • Liss, Witold (1966). The Polikarpov I-16 (Aircraft in Profile Number 122). Profile Publications Ltd. 

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Shvetsov_ASh-62 — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
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