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

high-bypass turbofan A turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a combination of references to the preceding generation engine technology of the turbojet and the additional fan stag ...

that powers the

Antonov An-124 Ruslan The Antonov An-124 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 Ukrainian SSR of the Soviet Union (USSR). The An-124 is the ...

and

An-225 The Antonov An-225 Mriya (; NATO reporting name: Cossack) was a large strategic airlift cargo aircraft designed and produced by the Antonov, Antonov Design Bureau in the Soviet Union. It was originally developed during the 1980s as an enlarged ...

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 (, ''Zaporizhzhia Machine-Building Design Bureau "Progress" State Enterprise named after Academician O.H.Ivchenko''), formerly OKB, OKB-478 and Ivchenko Lotarev, is a state design bureau that creates drafts and plans for ai ...

design bureau. It is manufactured by the

Motor Sich The Motor Sich, Joint Stock Company () is a Ukrainian aircraft engine manufacturer headquartered in Zaporizhzhia. The company manufactures engines for airplanes and helicopters as well as industrial marine gas turbines and installations. Ov ...

factory in

Zaporizhzhia Zaporizhzhia, formerly known as Aleksandrovsk or Oleksandrivsk until 1921, is a city in southeast Ukraine, situated on the banks of the Dnieper, Dnieper River. It is the Capital city, administrative centre of Zaporizhzhia Oblast. Zaporizhzhia ...

Ukraine Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ...

. It was the first engine in the

USSR The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

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 (; ; 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 Ukrainian SSR of the Soviet Union (USSR). The An-124 is the ...

s of

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

. 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 Gas turbine, gas turbine engine unexpectedly stops producing Power (physics), power due to a malfunction other than fuel exhaustion. It often applies for aircraft, but other turbine engines can also fail, ...

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

Volga-Dnepr Airlines Volga-Dnepr Airlines, LLC () is an airline based in Ulyanovsk, Russia. It specializes in providing air charter services through all-cargo aircraft certified for global operations. Volga-Dnepr Airlines serves governmental and commercial organizat ...

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

Applications

Antonov An-124 The Antonov An-124 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 Ukrainian SSR of the Soviet Union (USSR). The An-124 is the ...

Antonov An-225 The Antonov An-225 Mriya (; NATO reporting name: Cossack) was a large strategic airlift cargo aircraft designed and produced by the Antonov Design Bureau in the Soviet Union. It was originally developed during the 1980s as an enlarged derivat ...

(destroyed 2022)

Specifications (D-18T)

References

External links