The Progress D-18T (or Lotarev D-18T) is a

high-bypass turbofan 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 mechanica ...

that powers the

Antonov An-124 Ruslan The Antonov An-124 Ruslan (; russian: Антонов Ан-124 Руслан, , Ruslan; NATO reporting name: Condor) is a large, strategic airlift, four-engined aircraft that was designed in the 1980s by the Antonov design bureau in the Ukrain ...

and An-225 large freighters.

Design and development

The engine was developed in the second half of the 1970s by the then Soviet

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 ...

design bureau. It is manufactured by the Motor Sich factory in

Zaporizhzhia Zaporizhzhia ( uk, Запоріжжя) or Zaporozhye (russian: Запорожье) is a city in southeast Ukraine, situated on the banks of the Dnieper River. It is the administrative centre of Zaporizhzhia Oblast. Zaporizhzhia has a populat ...

Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inva ...

. It was the first engine in the USSR that could deliver more than 20,000 kgf (~196 kN or ~44,000 lbf) of thrust. The first start of a full-scale engine occurred on September 19, 1980, the An-124 maiden flight on December 24, 1982 and the engine passed official bench tests on December 19, 1985. An upgraded 3M version was developed to reduce emissions and increase the life of the hot section to 14,000 h, and is introduced on

An-124 The Antonov An-124 Ruslan (; russian: Антонов Ан-124 Руслан, , Ruslan; NATO reporting name: Condor) is a large, strategic airlift, four-engined aircraft that was designed in the 1980s by the Antonov design bureau in the Ukrain ...

s of Antonov Airlines. Currently 188 D-18T engines are in operation with a total flight time of over 1 million hours.

Incidents

In March 2020 Ukrainian authorities ordered a one time inspection of all D-18T engine intermediate pressure compressor disks following an uncontained engine failure. Inspections were required to be carried out within six months. On 13 November 2020 a Volga-Dnepr Airlines An-124 had an uncontained failure of the inboard left (number 2) D-18T engine.

Applications

* Antonov An-124 * Antonov An-225 (destroyed 2022)

Specifications (D-18T)

References

External links