Polish Aviation Museum

31-864 Kraków,
al. Jana Pawła II 39
phone: (12) 640 99 60,
(12) 642 40 70
e-mail: info@muzeumlotnictwa.pl

a cultural institution of the Malopolska Region

Małopolska – Kraków Region


Mecenas Muzeum

Kraków Airport

Instytut Techniczny Wojsk Lotniczych - sponsor restauracji samolotu Caudron  CR.714 Cyclone


Patroni Medialni

Skrzydlata Polska



Aircraft engine: PZL WN-3

PZL WN-3
Poland
radial engine
1955



Configuration7-cylinder radial
Coolingair-cooled
Displacement13.4 l (793.3 cu in)
Compression ratio6.2
Weight240 kg (529 lb)
Maximum power320 hp at 2,350 RPM
Cruise power283 hp at 2,250 RPM

First Polish-designed aircraft engine to enter serial production after WW2.

At the beginning of the 1950s the Polish military aviation laid an order for a new training aircraft, which was designed by Tadeusz Sołtyk. The then-available Soviet radial engines did not fulfill Polish Air Force requirements, therefore a new powerplant had to be constructed.

A team led by Wiktor Narkiewicz designed a very successful design, meeting these specifications. It was a further development of the earlier WN-2 version. The design had its roots in pre-war Polish engines. The WN-3 had no supercharger nor propeller reduction gear, and compressed air was used for startup.

The new powerplant was produced at the WSK Kalisz. The production lasted until 1970 and totalled 329 examples. The WN‑3 was used on the WSK TS‑8 Bies trainer and the WSK MD‑12 passenger aircraft prototypes.

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