The Shvetsov M-71 was a Soviet radial engine built in small numbers during World War II . It was derived from the Shvetsov M-25 , which was a license-built copy of the American Wright R-1820-F3 Cyclone engine.
6-671: The M-71 was developed from the Shvetsov M-70, a failed attempt at a two-row version of the single-row Wright R-1820 Cyclone. It used components from the Shvetsov M-63 , which was an improved version of the M-25 with more horsepower than the original. Development began at the beginning of 1939 and it was bench tested that August, but did not pass its State acceptance tests until the autumn of 1942. It weighed 970 kg (2,140 lb) and produced 2,000 horsepower (1,500 kW ). It
12-891: 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 . 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
18-514: The DVB-102 high-altitude bomber designed by Vladimir Myasishchev during the summer of 1943. Evaluations of the M-71 were generally favorable, but no production capacity was available to use for a brand-new engine during the war. Data from Kotelnikov, Russian Piston Aero Engines Related lists Shvetsov ASh-62 The Shvetsov ASh-62 (Russian: АШ-62 , designated M-62 before 1941)
24-662: 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. 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
30-582: Was flight-tested in a Polikarpov I-185 prototype fighter in March–April 1942. A boosted version, the M-71F, was built in small numbers. It was flown in the prototypes of the single-engined Sukhoi Su-6 and the twin-engined Sukhoi Su-8 ground-attack aircraft in 1943–44 as well as the Lavochkin La-7 fighter in 1944. A version of the M-71F was developed with two TK-3 turbochargers and flight tested in
36-658: 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). 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
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