D-18T
Two D-18T engines on Antonov An-124 "Ruslan"
Type	Turbofan
National origin	Soviet Union/Ukraine
Manufacturer	Ivchenko-Progress
First run	1982
Major applications	Antonov An-124 Antonov An-225
Number built	188[1]

The Progress D-18T (or Lotarev D-18T) is a three-shaft high by-pass turbofan engine rated at more than 50,000 pounds of thrust and designed to power very large transport aircraft.

Contents 1 Design and development 2 Applications 3 Specifications (D-18T) 4 See also 5 References 6 External links

[edit] 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 (~44,000 lbf or ~196 kN) 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.

[edit] Applications

• Antonov An-124
• Antonov An-225

[edit] Specifications (D-18T)

Data from forecastinternational.com^[2][3]

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; 51,655 pounds-force (229.77 kN)
• 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

[edit] See also

Comparable engines

• General Electric CF6
• Pratt & Whitney JT9D
• Pratt & Whitney PW4000
• Rolls-Royce RB211-524
  

Related lists

• List of aircraft engines
  

[edit] References

[edit] External links

• Description of D-18T at Ivchenko-Progress corporate web-site

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