Progress D-18T

D-18T
D-18T engine installed on an Antonov An-124 "Ruslan"
Type	Turbofan
National origin	Soviet Union/Ukraine
Manufacturer	Ivchenko-Progress
First run	Template:Avyear
Major applications	Antonov An-124 Antonov An-225
Number built	188

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

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.

Applications

• Antonov An-124
• Antonov An-225

Specifications (D-18T)

Three D-18T engines on Antonov An-225 "Mriya"

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; 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

See also

Comparable engines

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

Related lists

• List of aircraft engines

External links

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