PWS-19

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The PWS-19 was a Polish reconnaissance - bomber plane prototype of the 1930s, constructed in the PWS (Podlaska Wytwórnia Samolotów - Podlasie Aircraft Factory).

Contents

[edit] Development

The PWS-19 was constructed in 1930 in order to replace Fench-designed bombers Potez 25 and Breguet 19 in the Polish Air Force. It was a developement of the PWS-17, which remained in sketches. Main designers were Zbysław Ciołkosz and Antoni Uszacki. It was planned to be produced in two variants: reconnaissance PWS-19A2 and bomber PWS-19B2. It was a conventional design, a strutted high-wing monoplane with quite elegant silhouette, open cockpits and fixed landing gear. It was fitted with double tailfins to obtain a good field of defense fire.

The only prototype first flew in Biała Podlaska in September 1931. During tests it showed quite good flight characteristics. However, on March 17, in 1933, wings distorted in a dive and the prototype crashed (killing an observer). The Air Force considered ordering of PWS-19A2 with Bristol Pegasus engine, but at the same time, more modern plane PZL.23 Karaś was developed in the PZL - a low-wing monoplane of all-metal construction. As a result, works upon the PWS-19 stopped.

In 1934 Antoni Uszacki designed a smaller plane basing on the PWS-19, designated PWS U-6, with G-1620 Mors 400 hp engine. It participated in a contest for an army cooperation plane, but lost against RWD-14 Czapla and was not built.

[edit] Description

Mixed construction high-wing (parasol) monoplane. A fuselage of a metal frame, covered with duralumin in front section and canvas in mid and rear sections. Two-spar wings, of wooden construction, plywood covered. Stabilizers, rudder and elevator of metal construction, canvas covered. Twin vertical tailfins. Crew of two (pilot and observer/gunner) in open individual cockpits. Conventional fixed landing gear, with a rear skid.

Engine: 9 cylinder air-cooled radial Pratt & Whitney Hornet T2 in front, with a Townend ring (there were optional Bristol Jupiter VII or Bristol Pegasus). Two-blade metal propeller of a fixed pitch. Fuel tank 420 l in a fuselage, dropped in emergency.

Armament: single fixed 7.7 mm Vickers machineguns with an interrupter gear in a right side, single 7.7mm Vickers on a ring mounting of the observer. Up to 250 kg bombs (maximum bomb size - up to 50 kg).

General characteristics

  • Crew: 2, pilot, observer/gunner
  • Length: 9.17 m ()
  • Wingspan: 14.5 m ()
  • Height: 3.16 m ()
  • Wing area: 29 m2 (ft2)
  • Empty weight: 1340 kg ()
  • Loaded weight: 1950 kg ()
  • Useful load: 845 kg ()
  • Max takeoff weight: 2185 kg ()
  • Powerplant: 1× Pratt & Whitney Hornet T2 air-cooled 9-cylinder radial, 525 hp ()

Performance

Armament

2 x 7.7 mm Vickers machineguns (1 forward-firing, 1 movable), 250 kg bombs

Designation sequence

PWS-15 - PWS-16 - PWS-18 - PWS-19 - PWS-20 - PWS-21 - PWS-24 - PWS-26

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[edit] References

  • Andrzej Glass: "Polskie konstrukcje lotnicze 1893-1939" (Polish aviation constructions 1893-1939), WKiŁ, Warsaw 1977 (Polish language, no ISBN)

[edit] External links

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