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PZL TS-11 Iskra
The PZL TS-11 ''Iskra'' ((英語:Spark)) is a Polish jet trainer aircraft, used by the air forces of Poland and India. It is notable as the main training aircraft of the Polish Air Force, and as the oldest jet aircraft still in service in Poland.
==Development==
The aircraft was designed in response to a Polish Air Force requirement for a jet trainer. The main designer was Tadeusz Sołtyk - hence a designation letters TS. The new aircraft was the first jet aircraft designed in Poland. Work started in 1957, the first prototype powered by an imported British Armstrong Siddeley Viper 8 of 7.80 kN (1,750 lbf) was flown on 5 February 1960. The next two prototypes, with a Polish copy of the Viper engine named the WSK HO-10 engine were flown in March and July 1961.
The new Aircraft fulfilled requirements and, after tests, was accepted for the Polish Air Force as the TS-11 Iskra bis A, produced since 1963. From about 1966, the aircraft were produced with a new Polish-designed engine WSK SO-1 with thrust of 9.80 kN (2,200 lbf). From 1969, WSK SO-3 engines with longer time between overhauls were used and later improved version WSK SO-3W with thrust of 10.80 kN (2,425 lbf).
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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