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Shvetsov ASh 62

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Shvetsov ASh-62

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.

Contents

Design and development

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, licensed 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.

Applications

  • Antonov An-2
  • Antonov An-6
  • de Havilland Canada DHC-3
  • Douglas TS-62
  • Lisunov Li-2
  • Neman R-10
  • Polikarpov I-153
  • Polikarpov I-16
  • PZL-106 Kruk (some variants)
  • PZL-Mielec M-18 Dromader
  • PZL M-24 Dromader Super (K-9AA)
  • Sukhoi Su-2 (prototype)
  • Sukhoi Su-12
  • VL Myrsky (one prototype)
  • Junkers Ju-52 (according to some sources)

    • Specifications (M-62)

    Data from

    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: 1,213 mm (47.76 in)
  • Diameter: 1,378 mm (54.25 in)
  • Dry weight: 560kg (1,235 lb)

    • Components

  • Valvetrain: Overhead valves
  • Supercharger: Two-speed centrifugal type supercharger
  • Fuel system: Carburetor
  • Fuel type: 92 RON, 87 (R+M)/2 (AKI) octane rating gasoline
  • Cooling system: Air-cooled

    • Performance

  • Power output: * 746 kW (1,000 hp) at 2,200 rpm for takeoff
  • 634 kW (850 hp) at 2,100 rpm at 4,200 m (13,780 ft)
  • Specific power: 25.03 kW/l (0.55 hp/in³)
  • Compression ratio: 6.4:1
  • Specific fuel consumption: 469 g/(kW•h) (0.77 lb/(hp•h))
  • Power-to-weight ratio: 1.3 kW/kg (.81 hp/lb)

    • References

    Shvetsov ASh-62 Wikipedia
    (Text) CC BY-SA