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Progress D 18T

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Progress D-18T

The Progress D-18T (or Lotarev D-18T) is a three-spool, high-bypass turbofan engine rated at more than 20,000 kg (44,000 lb) of thrust and designed to power very large transport aircraft.

Contents

Design and development

The engine was designed by the Ivchenko-Progress Design Bureau and is manufactured by Motor Sich factory in Zaporizhia, 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.

  • September 19, 1980 - first start of a full-scale engine.
  • December 24, 1982 - An-124 maiden flight.
  • December 19, 1985 – engine passes official bench tests.

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

    Applications

  • Antonov An-124
  • Antonov An-225

    • Specifications (D-18T)

    Data from forecastinternational.com

    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 axial HP compressor
  • Combustors: Annular combustion system
  • Turbine: Single-stage HP turbine, single-stage IP turbine, four‑stage LP turbine

    • Performance

  • Maximum thrust: 23,430 Kgf; 229.85 kN (51,670 lbf)
  • Overall pressure ratio: 27.5
  • Bypass ratio: 5.7
  • Turbine inlet temperature: 1,600 K (1,327 °C; 2,420 °F)
  • Thrust-to-weight ratio: Approx 5.7:1

    • References

    Progress D-18T Wikipedia
    (Text) CC BY-SA