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 The Antonov An-225 Mriya ( uk, Антонов Ан-225 Мрія, lit=dream' or 'inspiration; NATO reporting name: Cossack) was a strategic airlift cargo aircraft designed and produced by the Antonov Design Bureau in the Soviet Union. It was o ...

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 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 ...

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 inv ...

. 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 Antonov Airlines is a Ukrainian cargo airline, a division of the Antonov aviation company. It operates international charter services in the oversized-cargo market. Its main base is Hostomel Airport near Kyiv. In the aftermath of the Battle ...

. 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 A turbine engine failure occurs when a turbine engine unexpectedly stops producing power due to a malfunction other than fuel exhaustion. It often applies for aircraft, but other turbine engines can fail, like ground-based turbines used in powe ...

. Inspections were required to be carried out within six months. On 13 November 2020 a

Volga-Dnepr Airlines Volga-Dnepr Airlines, LLC (russian: ООО «Авиакомпания «Волга-Днепр») is an airline based in Ulyanovsk, Russia. It specializes in providing air charter services by operating a unique fleet of twelve Antonov An-124 (lar ...

An-124 had an uncontained failure of the inboard left (number 2) D-18T engine.

Applications

Antonov 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 ...

Antonov An-225 The Antonov An-225 Mriya ( uk, Антонов Ан-225 Мрія, lit=dream' or 'inspiration; NATO reporting name: Cossack) was a strategic airlift cargo aircraft designed and produced by the Antonov Design Bureau in the Soviet Union. It was ...

(destroyed 2022)

Specifications (D-18T)

References

External links