Narkiewicz WN-1

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 air-cooled flat-four piston engine which was the first post-war Polish aero-engine, followed by the WN-2 in 1947, but both of these engines failed to enter production.''Flight'' 26 July 1957, p. 127.

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 was completed in 1954, and by the time testing was completed in 1955, the engine's power rose to . The WN-3 entered production in 1956,Cynk ''Flight International'' 4 January 1962, p. 17. powering the PZL TS-8 Bies training aircraft.

The engine was produced in 1957-1960 by WSK-Kalisz in Kalisz, it might be known also as PZL WN-3, or (in Western sources) as Narkiewicz WN-3.

Variants

;WN-3
:Production version, .
;WN-4
:Modified version for use in helicopters.

Applications

* PZL TS-8 BiesTaylor 1961, pp. 121–122.
* PZL MD-12 (prototype)Taylor 1961, pp. 118–119.
* BŻ-4 Żuk (prototype)

Specifications

References

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*{{cite book , last1=Babiejczuk , first1=Janusz , last2=Grzegorzewski , first2=Jerzy, date= 1974, title=Polski przemysł lotniczy 1945–1973 , trans-title= Polish aviation industry 1945-1973, language= pl, location=Warsaw , publisher= Wydawnictwo MON, pages=145, 149–151

1950s aircraft piston engines
Aircraft air-cooled radial piston engines