The PWS-1 was a Polish two-seat fighter and reconnaissance aircraft, constructed by Podlaska Wytwórnia Samolotów (PWS) in 1927, which remained a prototype.

Class Aircraft
Type Fighter
Manufacturer Podlaska Wytwornia Samolotow
Production Period 1926 - 1927
Origin Poland
Country Name Origin Year
Poland 1927
Country Name Operational Year Retirement Year
Poland View
ManufacturerName Production From Production To Quantity
Podlaska Wytwornia Samolotow 1926 1927 1 View

The PWS-1 was the first design of the Podlaska Wytwórnia Samolotów (Podlasie Aircraft Factory), and the second aircraft designed and built in Poland, after the CWL WZ-X. It was conceived as a single-engine high-wing two-seat fighter, a main purpose of which was the escorting of bombers. Design work was carried in 1926 by Zbyslaw Ciolkosz and Aleksander Grzedzielski, under direction of Stanislaw Cywinski.

After static tests, the prototype first flew on 25 April 1927 in Biala Podlaska. Tests revealed poor manoeuvrability, its speed was also low due to a thick wing, despite STOL capability.

In 1928 the aircraft was reworked, receiving a new, lighter, straight wing of thinner profile and duralumin construction instead of a wooden, slightly swept one. It also received an enormous vertical stabilizer of rectangular shape with rounded top. After modifications it was flown in early 1929, under a designation PWS-1bis. Its performance improved, but because of its relatively low speed compared to other fighters, its primary role was changed to reconnaissance. Development was however discontinued, because it had little payload, and in a meantime Poland had bought large numbers of better Breguet 19 and Potez 25 reconnaissance and bomber aircraft.

Role Fighter aircraft
Manufacturer Podlaska Wytwórnia Samolotów
First flight 25 April 1927
Status prototype
Primary user Polish Air Force
Number built 1

General characteristics

  • Crew: 2, pilot and observer
  • Length: 8.7 m 
  • Wingspan: 13.7 m
  • Height: 4.3 m
  • Wing area: 30 m² (ft²)
  • Empty weight: 1113 kg
  • Loaded weight: 1500 kg
  • Useful load: 387 kg
  • Max. takeoff weight: 1550 kg
  • Powerplant: 1 × Lorraine-Dietrich LD-12Eb water-cooled inline W12 engine, 478 hp


  • Maximum speed: 232 km/h
  • Cruise speed: 200 km/h
  • Stall speed: <98 m
  • Range: 750 km
  • Service ceiling: 5,600 m
  • Rate of climb: 5.4 m/s
  • Wing loading: 65 kg/m²


  • 2 x 7.7 mm Vickers machine guns (pilot's fixed in the fuselage)
  • 2 x 7.7 mm Lewis machine gun (observer's on a ring mounting)

End notes