Schwezow ASch-62

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ASch-62, installed in a Lissunow Li-2 , engine cowling removed

The Schwezow ASch-62 ( Russian Швецов АШ-62 , before 1941 referred to as M-62 ) is an air-cooled nine-cylinder radial engine that was manufactured in the Soviet Union . One version of this engine is manufactured in the People's Republic of China as the HS-5 . The name refers to the initials of its designer Arkadi Schwezow .

construction and development

The ASch-62 is an air-cooled nine-cylinder gasoline engine with a star-shaped piston arrangement. It is a further development of the Wright R-1820 Cyclone , which was manufactured under license in the Soviet Union as the Schwezow M-25 . The main improvements included a two-stage compressor and a more powerful suction system. This increased the maximum output from 570 to around 746  kW . The engine was put into operation for the first time in 1937 and is still manufactured today (as of October 2015) as ASz-62IR in Kalisz (Poland) by WSK "PZL-Kalisz" . It is estimated that over 40,000 engines were built in the Soviet Union.

With the successor variant M-63, an increase in the compression ratio (7.2: 1) and the maximum permissible number of revolutions increased the maximum power to 809 kW.

Applications

ASch-62, installed in an Antonov An-2 , engine cowling closed

Technical data (M-62)

Parameter Data
cylinder 9, air-cooled, single-row star arrangement
drilling 156 mm
Hub 175 mm
Displacement 29.8 l
length 1213 mm
diameter 1378 mm
Weight 560 kg
Charging two-stage compressor
Fuel system Carburetor
fuel Petrol , at least 92 octane . (Most of the time, AvGas 100 LL is prescribed).
power 746  kW (1,014.3  hp ) at 2200 rpm take-off power.
634 kW (862 hp) at 2100 rpm at 4200 m altitude.
Compression ratio 6.4: 1
Power / weight ratio 1.3 kW / kg

literature

  • Bill Gunston: World Encyclopedia of Aero Engines . Ed .: Patrick Stephens. 1986, p. 154 .
  • Vladimir Kotelnikov: Russian Piston Aero Engines . Crowood Press Ltd., 2005, p. 119-122 .

Web links

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