Lotarev D-36
The Ivchenko Progress D -36 (also called Lotarjow D- 36) is a three-shaft turbofan engine with high bypass ratio of the Ukrainian producer Ivchenko (English Ivchenko Progress).
The development of this intended for the Yak-42, An-72 and An-74 (then for the time and Russian standards very progressive ) engine began in the early 1970s under the leadership of Vladimir Lotarjow. First test runs started in 1971, first flight tests followed in 1974. Serial production began in 1977.
The engine has a one-stage fan 29 titanium sheets and an outer shell made of aramide ( "Kevlar" ), which is driven by a three-stage turbine. Of the six-stage low-pressure compressor with titanium sheets driven by a single-stage non-cooled low pressure turbine. The seven-stage high-pressure compressor with steel blades will be driven by a single-stage film and internally cooled high pressure turbine.
The engine of the series 4A for the An- 74TK -300 comes standard equipped with a thrust reverser.