Shvetsov ASh-62

ASh-62
Type	Radial engine
Manufacturer	Shvetsov
First run	1937
Major applications	Antonov An-2, Polikarpov I-153, Polikarpov I-16, Lisunov Li-2
Number built	40,361
Developed from	Shvetsov M-25
Developed into	Shvetsov ASh-82

The Shvetsov ASh-62 (Russian: АШ-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 Poland as the ASz-62 and the People's Republic of China as the HS-5.

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 of 2017).^[1] The Ash-62 was also produced in China. It is estimated that 40,361 were produced in the USSR.

Polish-built ASz-62IR engines (Polish transcription of Russian name), by WSK "PZL-Kalisz" in Kalisz, 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. From 2015 the ASz-62IR-16E was produced with electronic fuel injection, offering greater power and the possibility of running on commercial automotive fuel.^[1]

The M-63 was an improved version of the M-62 with the 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 (14,800 ft) due to a higher compression ratio of 7.2:1 and a higher redline.

Applications

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

Specifications (M-62)

Family tree of Shvetsov engines

Data from Liss.^[2]

General characteristics

Type: Nine-cylinder single-row supercharged air-cooled radial engine
Bore: 155.5 mm (6.12 in)
Stroke: 174.5 mm (6.87 in)
Displacement: 29.876 L (1,823.1 cu in)
Length: 1,213 mm (47.76 in)
Diameter: 1,378 mm (54.25 in)
Dry weight: 560 kg (1,230 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

Notes

^ ^a ^b Gruszczyński, Jerzy. W pierwszej lidze dostawców, "Lotnictwo Aviation International" Nr. 9/2017, p. 34-37 (in Polish)
^ Liss 1966, p. 9

Bibliography

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

[grusz-1] Gruszczyński, Jerzy. W pierwszej lidze dostawców, "Lotnictwo Aviation International" Nr. 9/2017, p. 34-37 (in Polish)

[2] Liss 1966, p. 9

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