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The Ivchenko AI-24 turboprop aircraft engine was designed and developed by Progress ZMKB (OKB-478) which later became known as Ivchenko-Progress design bureau and manufactured thereafter by Motor Sich JSC. It was designed to power Antonov's successful An-24, An-26 and An-30 aircraft series. ==Design and development== In 1958, based on the experience gained in the course of designing the AI-20 turboprop engine and using advanced methods of simulation, a scaled-down turboprop engine, AI-24, rated at 2550 ehp was developed.〔Fulton, K.; "International Turbine Engine Directory", ''Flight'', 13 January 1979, Pages 81-104, 125-138 ((Ivchenko, Page 98 )).〕 The engine was specifically designed to power the Antonov An-24 passenger aircraft. True to the Soviet tradition, design was kept separate from serial production which was started in 1960. The turboprop engine along with many of the bureau's other designs were manufactured at Motor Sich JSC which is also located in Zaporozhye. Attempts were made to also produce a turboshaft variant - for instance in 1960, eleven pre-production units of AI-24V turboshaft variants rated at 2000 hp were manufactured for powering the first two V-8 (Мi-8) prototype helicopters. However later on, due to the fact that the TV2-117 engine was selected for powering the Mi-8, the works on the AI-24V engine aborted. The AI-24A produced 1,900 kW (2,550 shp).〔 An improved series was introduced in 1966.〔 Each engine nacelle included a fire extinguishing system that could be set to an automatic operation mode. The AI-24 turboprop engines featured wide gas dynamic stability margin at all power conditions, altitudes and flight speeds. The most notable feature of the engine was in its operational reliability. The main advantages of the engine were simple design, high reliability, long service life and easy maintainability. The later AI-24T had water injection giving increased power output. It also introduced automatic limiting of power overloads and exhaust gas temperatures, along with vibration monitoring, automatic shutdown and feathering.〔''Jane's'' (1980).〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ivchenko AI-24」の詳細全文を読む スポンサード リンク
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