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PWS-26
The PWS-26 was a Polish advanced training aircraft, used from 1937 to 1939 by the Polish Air Force, constructed in the PWS (''Podlaska Wytwórnia Samolotów'' - Podlasie Aircraft Factory). It was the second most numerous Polish pre-war aircraft, after the RWD-8.
==Design and development==
The aircraft was a final development of a series: PWS-12, PWS-14 and PWS-16, designed in response to a Polish Air Force requirement for an advanced trainer. The chief designer was Augustyn Zdaniewski. The PWS-26 was a direct development of the PWS-16bis, sharing the same silhouette, being a more militarized variant - with strengthened construction, which allowed dive-bomber training. Contrary to its predecessors, the PWS-26 could be armed with a forward-shooting machine gun and practice bombs. It also had other improvements and was capable of aerobatics. A visual difference from the PWS-16bis were the canvas-covered struts of the landing gear.
The prototype was flown in 1935. After trials, its production started in 1936. By the outbreak of World War II in 1939, 320 had been built.
The PWS-26 was used in Polish military aviation from early 1937, becoming a standard type of advanced trainer for fighter pilots. It replaced most of the older PWS-14s, PWS-16s, PWS-18s (a licence-built Avro Tutor) and Bartel BM-5d's. They carried numbers starting with "81-". The PWS-26 was regarded as a successful aircraft, with good flight characteristics. During its Polish service, there were 10 fatal crashes, which was not a high number.
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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