The WN-3 was a Polish seven-cylinder air-cooled radial engine of the 1950s, produced by WSK-Kalisz, designed by Wiktor Narkiewicz.
Design and development
In 1946, Wiktor Narkiewicz, who prior to the Second World War was technical director of the Czechoslovakian Avia aero-engine factory, was appointed chief designer of the Polish Central Engine Office, and later the Aero-engine department of the Polish Aviation Institute (Instytut Lotnictwa, IL). He led the design of the WN-1, a 48 kW (65 hp) air-cooled flat-four piston engine which was the first post-war Polish aero-engine, followed by the 213 kW (285 hp) WN-2 in 1947, but both of these engines failed to enter production.[1][2]
In 1952 Narkiewicz set up a small design team to design a new seven-cylinder radial engine, the WN-3. The first prototype, rated at 220 kW (300 hp) was completed in 1954, and by the time testing was completed in 1955, the engine's power rose to 250 kW (330 hp).[1][2] The WN-3 entered production in 1956,[3] powering the PZL TS-8 Bies training aircraft.[2]
The engine was produced in 1957-1960 by WSK-Kalisz in Kalisz,[4] it might be known also as PZL WN-3, or (in Western sources) as Narkiewicz WN-3.[3]
Specific fuel consumption: .186–.201 kg/kWh (0.114–0.123 lb/MJ) at max power .160 kg/kWh (0.098 lb/MJ) (econ cruise)
References
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^ a b c dTaylor 1961, pp. 457–458.
^ a b c d eFlight 26 July 1957, p. 127.
^ a bCynk Flight International 4 January 1962, p. 17.
^ a bBabiejczuk, Janusz; Grzegorzewski, Jerzy (1974). Polski przemysł lotniczy 1945–1973 (in Polish). Warsaw: Wydawnictwo MON. pp. 145, 149–151.
^Taylor 1961, pp. 121–122.
^Taylor 1961, pp. 118–119.
"Aero Engines 1957". Flight. Vol. 72, no. 2531. 26 July 1957. p. 127.
Cynk, Jerzy B. (4 January 1962). "Progress in Poland". Flight International. Vol. 81, no. 2756. pp. 14–17.
Taylor, John W. R. (1961). Jane's All The World's Aircraft 1961–62. London: Sampson Low, Marston & Company, Ltd.
Babiejczuk, Janusz; Grzegorzewski, Jerzy (1974). Polski przemysł lotniczy 1945–1973 [Polish aviation industry 1945-1973] (in Polish). Warsaw: Wydawnictwo MON. pp. 145, 149–151.