The Progress D-436 is a triple-spool high-bypass turbofan engine developed by the Ukrainian company Ivchenko-Progress during the Soviet era, and manufactured by Motor Sich in Ukraine. It was initially developed to meet the requirements for late versions of the Yakovlev Yak-42 and the Antonov An-72 in the 1980s. The engine first ran in 1985 and was subsequently certified in 1987. Several variants have been developed and are currently in service with a variety of aircraft.
5-606: The D-436 engine was developed as a follow on to the Lotarev D-36 . The engine took several of its design features from that engine and another Progress engine, the Progress D-18 . The D-436 incorporated an updated, higher RPM fan, a lower emissions combustor, and new compressor sections. Several variants of the engine incorporate a FADEC . The Motor-Sich plant in Zaporozhie, where the assembly line for D-436 engines
10-596: Is driven by a single-stage non-cooled low pressure turbine. The seven-stage high-pressure compressor with steel blades is driven by a steel bladed high-pressure turbine. Since the tradition in the Soviet era was to gradually and continuously improve engines in serviceability, engines went from Series 1 to 3A (depending on the application). The Series 1 (used on Yak-42D) did not feature any reverse thrust system however, series 1A to 3A were fitted with bucket-type thrust reversers (used on An-72/An-74). The most recent upgrade (after
15-462: The Soviet breakup) is Series 4A which has been in manufacture since 2002. Improvements included updated curved titanium blades and a built-in reverse thrust device. More advanced blade design along with proprietary wear-resistant and heat-protective coatings have resulted in improved specific fuel consumption (kg/h/kgf) dropping from 0.65 to 0.63. Specified service life has also improved exponentially to 40,000 hours. The current application for Series 4A
20-524: Was developed for the Yak-42 , An-72 and An-74 aircraft and was very advanced when it was first introduced in the 1970s. The engine was designed by Vladimir Lotarev . The first test runs began in 1971, first flight tests followed in 1974, serial production began in 1977. The engine has a single-stage fan with 29 titanium blades and a Kevlar outer shell, which is driven by a three-stage turbine . The six-stage low pressure compressor with titanium blades
25-490: Was located, was destroyed by Russian forces in late May 2022 following the 2022 Russian invasion of Ukraine . Data from Elodie Roux, page 159 Related development Comparable engines Related lists Lotarev D-36 The Ivchenko Progress D-36 (also known as Lotarev D-36 ) is a three-shaft high bypass ratio turbofan currently produced by the Ukrainian Motor Sich company. The engine
#465534