The Progress D-436 is a three-shaft high by-pass

turbofan engine The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which achieves mechanic ...

developed by the Ukrainian company

Ivchenko-Progress Ivchenko-Progress ZMKB ( uk, Запорізьке машинобудівне конструкторське бюро «Прогрес» ім. О.Г.Івченка, ''Zaporizhzhia Machine-Building Design Bureau "Progress" State Enterprise named af ...

, and manufactured by

Motor Sich The Motor Sich Joint Stock Company ( uk, АТ «Мотор Січ») is a Ukrainian aircraft engine manufacturer headquartered in Zaporizhzhia. The company manufactures engines for airplanes and helicopters, and also industrial marine gas turbi ...

in Ukraine. It was initially developed to meet the requirements for late versions of the

Yakovlev Yak-42 The Yakovlev Yak-42 (russian: Яковлев Як-42; NATO reporting name: "Clobber") is a 100/120-seat three-engined mid-range passenger jet developed in the mid 1970s to replace the technically obsolete Tupolev Tu-134. It was the first airli ...

and the

Antonov An-72 The Antonov An-72 (NATO reporting name: Coaler) is a Soviet/Ukrainian transport aircraft, developed by Antonov. It was designed as an STOL transport and intended as a replacement for the Antonov An-26, but variants have found success as commer ...

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.

Design and development

The D-436 engine was developed as a follow on to the

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 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 A full authority digital engine (or electronics) control (FADEC) is a system consisting of a digital computer, called an "electronic engine controller" (EEC) or "engine control unit" (ECU), and its related accessories that control all aspects of ai ...

. The Motor-Sich plant in Zaporozhie, where the assembly line for D-436 engines was located, was destroyed by Russian forces in late May 2022 following the

2022 Russian invasion of Ukraine On 24 February 2022, in a major escalation of the Russo-Ukrainian War, which began in 2014. The invasion has resulted in tens of thousands of deaths on both sides. It has caused Europe's largest refugee crisis since World War II. An ...

Variants

;D-436K: The "K" variant was the initial model of the engine. It had a bypass ratio of 6.2 and a pressure ratio of 21.0. Proposed for use in the defunct

Antonov An-71 The Antonov An-71 ( NATO reporting name: Madcap) was a Soviet AWACS aircraft intended for use with VVS-FA (Fighter Bomber) forces of the Soviet Air Force, developed from the An-72 transport. Only three prototypes were built before the program w ...

. ;D-436M: The "M" variant was proposed for use on the Yak-42M. ;D-436T1: The "T1" variant is used on the

Tu-334 The Tupolev Tu-334 (russian: Туполев Ту-334) was a Russian Short haul, short-to-medium range airliner project that was developed to replace the ageing Tupolev Tu-134, Tu-134s and Yak-42s in service around the world. The airframe was ...

and has been offered for use on the in-development Tu-414. See detailed specifications below. The variant was also proposed for use on the now-defunct An-174. ;D-436T1-134: The "T1-134" variant was proposed as a replacement for the engines on the

Tu-134 The Tupolev Tu-134 (NATO reporting name: Crusty) is a twin-engined, narrow-body jet airliner built in the Soviet Union for short and medium-haul routes from 1966 to 1989. The original version featured a glazed-nose design and, like certain ot ...

. ;D-436T2: The "T2" variant is uprated to of thrust and is used on the Tu-334-100D and the Tu-334-200D. ;D-436TP: The "TP" variant is a specific "maritime" corrosion-resistant version developed for use in the Be-200 amphibious aircraft. This variant produces 7,500 kgf (16,534 lbf) each. ;D-436T3: The "T3" variant added a booster section behind the new wide-chord fan and had a maximum thrust around . The T3 variant was also considered for the

Il-214 The Ilyushin Il-276 (SVTS) (russian: Средний военно-транспортный самолет �ВТС}) is a medium-airlift military transport aircraft currently being developed by initially United Aircraft Corporation (UAC). It is ...

, but the aircraft's thrust requirements exceeded the max engine thrust of . ;D-436-148: The "-148" variant was developed specifically for the

An-148 The Antonov An-148 ( ua, Антонов Ан-148) is a regional jet designed and built by Antonov of Ukraine. Development of the aircraft was started in the 1990s, and its maiden flight took place on 17 December 2004. The aircraft completed its ...

. This version is derated to of thrust for longer engine life. ;D-436TX: The "TX" variant uses the same core at the "T3", but includes an updated turbine and a geared fan. It is in the class.

Derivatives

;AI-436T12: This derivative engine was designed for use on the Irkut/Ilyushin

MC-21 The Irkut MC-21 (russian: Иркут МС-21) is a single-aisle airliner, developed in Russia by the Yakovlev Design Bureau and produced by its parent Irkut, a branch of the United Aircraft Corporation (UAC), itself a 92%-owned subsidiary of ...

. It was projected to produce of thrust.ENGINES (2008). ''DEFENSE and SECURITY (Russia)''. No. 100, September 10, 2008 Irkut has since replaced the AI-436T12 with the

Aviadvigatel PD-14 The Aviadvigatel PD-14 (previously known as PS-12) is a high-bypass turbofan being developed by Aviadvigatel to power the Irkut MC-21 twin-jet airliner. It is a 14 tf (30,865 lbf) thrust powerplant. Development In December 2009, the PD-14 ...

Applications

* Antonov An-148 * Antonov An-72/74 * Beriev Be-200 *

Tupolev Tu-334 The Tupolev Tu-334 (russian: Туполев Ту-334) was a Russian short-to-medium range airliner project that was developed to replace the ageing Tu-134s and Yak-42s in service around the world. The airframe was based on a shortened Tupol ...

* Yakovlev Yak-42M

Specifications (D-436-T1)

References

Notes

{{Ivchenko aeroengines Ivchenko-Progress aircraft engines High-bypass turbofan engines 1980s turbofan engines Three-spool turbofan engines