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LWS-3 Mewa
The LWS-3 Mewa ("Seagull") was the Polish observation and close reconnaissance aircraft, designed in the late-1930s by the LWS factory. It was ordered by the Polish Air Force, but did not manage to enter service before the outbreak of World War II.
==Design and development==
The aircraft was designed as the successor to the obsolete Lublin R-XIII army cooperation plane. First sketches were drawn in 1936 by Zbysław Ciołkosz, the chief designer of the LWS factory (''Lubelska Wytwórnia Samolotów''). It was similar to the earlier light ambulance plane LWS-2, which itself was inspired by the STOL plane RWD-9 wing design. After Ciołkosz had left LWS in 1937, the project, named LWS-3 Mewa, was modified and further developed at the LWS bureau. In the same year, the Polish Air Force ordered three prototypes. The first prototype LWS-3/I was flown in November 1937. It revealed some handling deficiencies, but otherwise a good performance. Following tests, the design of the aircraft was improved. In 1938, the second prototype LWS-3/II was flown. It had a crank mechanism to lower tailfin and rudder in order to increase angle of the rear machine gun fire, but as it proved impractical, the next prototype LWS-3/III from autumn 1938 again had a classic tailfin design. The third prototype, with some further changes, among others to the engine cover and canopy, was the pattern for serial production. The first prototype was exhibited at the 16th International Paris Aviation Salon in November 1938 (as "PZL Mewa"), where it met with interest.
Official tests were satisfactory, and in 1938 the Polish Air Force ordered 200 aircraft of the production variant LWS-3A Mewa (or "Mewa A"). The production started in early 1939, and first aircraft were to be ready in the summer. In August 1939, about 30 aircraft were almost completed (10 ready, but lacking propellers, 7 in painting and 10 in final assembly).
LWS-3B Mewa variant powered with a Fiat R74 860 hp (640 kW) engine for Bulgaria was being developed as well as a floatplane LWS-3H (hydro) variant for the Polish naval aviation. None were produced due to the war outbreak.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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