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Saturn AL-41
The AL-41F is a designation for two different Russian military turbofan engine variants. The NPO Saturn AL-41F is a Russian variable-bypass ratio turbofan engine, designed for supercruise flight for the ''MFI'' (''Mnogofunktsionalni Frontovoy Istrebitel'', "Multifunctional Frontline Fighter") program, which resulted in the Mikoyan Project 1.44. It is considered by Jane's as the Russian counterpart to the General Electric YF120 engine which lost to the more conventional fixed-bypass YF-119 in the Advanced Tactical Fighter engine program. Since the cancellation of the MFI program, the AL-41F1S and AL-41F1 designation was assigned to heavily upgraded AL-31F variants that powers the Su-35S and initial production PAK FA stealth aircraft.
==Design and development==
The AL-41F program was launched in 1982, and the first prototype engine flew in a MiG-25 Foxbat testbed. Originally developed for the Mikoyan Project 1.44,〔http://archive.russia-today.ru/2009/no_12/12_from_backlog_01.htm〕〔http://maria-online.com/cinema/article.php?q=%D0%90%D0%9B-41%D0%A4〕 28 engines were built, however the engine did not advance beyond prototype stage and when the MiG 1.44 was cancelled.
The AL-41 designation was reused for heavily upgraded variants of the AL-31 used to power the Su-35S (Izdeliye 117S / AL-41F1A) and initial production PAK FA (Izdeliye 117 / AL-41F1) stealth aircraft. Some of the technologies of the original AL-41F were applied in the 117S and 117 engines.
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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