Progress D-18T
| Type | Turbofan |
|---|---|
| National origin | Soviet Union/Ukraine |
| Manufacturer | Motor Sich |
| Designer | Ivchenko-Progress |
| First run | 1980 |
| Major applications | Antonov An-124 Ruslan Antonov An-225 Mriya |
| Number built | 188[1] |
The Progress D-18T (or Lotarev D-18T) is a Template:Cvt high-bypass turbofan that powers the Antonov An-124 Ruslan 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 design bureau.[2] It is manufactured by the Motor Sich factory in Zaporizhzhia, Ukraine. It was the first engine in the USSR that could deliver more than 20,000 kgf (~196 kN or ~44,000 lbf) of thrust.[3] 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-124s of Antonov Airlines.[2] Currently 188 D-18T engines are in operation with a total flight time of over 1 million hours.
Incidents
Script error: No such module "Labelled list hatnote". 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.[4] On 13 November 2020 a Volga-Dnepr Airlines An-124 had an uncontained failure of the inboard left (number 2) D-18T engine.[5]
Applications
- Antonov An-124
- Antonov An-225 (destroyed 2022)
Specifications (D-18T)
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Data from forecastinternational.com[6]
General characteristics
- Type: Three-spool high bypass turbofan engine with a single-stage fan
- Length: 5.4 m (212.6 in)
- Width: 2.93 m (115.6 in)
- Height: 2.79 m (109.9 in)
- Fan diameter: 2.33 m (91.73 in)
- Diameter:
- Dry weight: 4,100 kg (9,039 lb)
Components
- Compressor: Seven-stage IP compressor, seven-stage HP axial compressor
- Combustors: Annular combustion system
- Turbine: Single-stage HP turbine, single-stage IP turbine, four‑stage LP turbine
Performance
- Maximum thrust: Takeoff: Template:Cvt; Cruise: Template:Cvt[7]
- Overall pressure ratio: 27.5
- Bypass ratio: 5.7
- Turbine inlet temperature: 1,600 K (1,327 °C; 2,420 °F)
- Specific fuel consumption: Takeoff: Template:Cvt; Cruise: Template:Cvt[7]
- Thrust-to-weight ratio: 5.72
See also
Comparable engines
- General Electric TF39
- General Electric CF6
- General Electric GEnx-2B
- Pratt & Whitney JT9D
- Pratt & Whitney PW4000
- Rolls-Royce RB211-524
- Rolls-Royce Trent 500
- Rolls-Royce Trent 900
Related lists
References
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- ↑ D18T at deagel.com
- ↑ a b Script error: No such module "citation/CS1".
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External links
- D-18T Series 3 Turbofan Aero Engine - SE Ivchenko-Progress
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