Lotarev D-136

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D-136
The Ivchenko-Progress D-136 engine on display at the 2009 MAKS Air Show.
Type	Turboshaft
National origin	Soviet Union
Manufacturer	Ivchenko-Progress / Motor Sich
Major applications	Mil Mi-26
Developed from	Lotarev D-36
Developed into	Progress D-236

The Lotarev D-136 is a turboshaft engine from the ZMKB Progress Design Bureau. The engine powers the Mil Mi-26 "Halo" helicopter. Development of the engine had begun in about 1972.^: 76. The D-136 first flew on a production Mi-26 helicopter in 1980.^: 79

Design

The core of the engine is identical to the Lotarev D-36 turbofan from which the D-136 is derived.

Applications

• Mil Mi-26

Specifications

Data from Mil's heavylift helicopters, pages 90-91

General characteristics

• Type: 3-spool turboshaft
• Length: 3,964 mm (13 ft 0 in)
• Width: 1,670 mm (5 ft 6 in)
• Height: 1,160 mm (3 ft 10 in)
• Diameter:
• Dry weight: 1,050 kg (2,315 lb)

Components

• Compressor: 7-stage subsonic high-pressure (HP) compressor, 6-stage transonic low-pressure (LP) compressor
• Combustors: Annular combustion chamber, 24 fuel nozzles, 2 igniters
• Turbine: 1-stage HP turbine @ 14,170 rpm, 1-stage LP turbine @ 10,950 rpm, 2-stage free-power turbine @ 8,300 rpm (±300 rpm)

Performance

• Maximum power output: Takeoff: 10,000 equivalent shp (7,500 kW); Contingency: 11,400 equivalent shp (8,500 kW); Sustained: 8,500 equivalent shp (6,338 kW)
• Overall pressure ratio: 18.3
• Air mass flow: 36 kg/s (79 lb/s)
• Turbine inlet temperature: Takeoff: 1,478 K (2,660 °R; 1,205 °C; 2,201 °F); Maximum: 1,516 K (2,729 °R; 1,243 °C; 2,269 °F)
• Specific fuel consumption: Takeoff: 0.198 kg/(hp⋅h) (0.265 kg/kWh; 0.436 lb/(hp⋅h)); Cruise: 0.206 kg/(hp⋅h) (0.276 kg/kWh; 0.454 lb/(hp⋅h))
• Power-to-weight ratio: 4.93 shp/lb (8.1 kW/kg)

See also

Related development

• Lotarev D-36
• Progress D-236

Comparable engines

• Allison T701
• Aviadvigatel PD-12V

Related lists

• List of aircraft engines

References

Bibliography

• "Ukraine starts testing improved engine for heavy helicopters". Russian Aviation Insider. 26 January 2017.
• "Soviets develop turboshaft powerplant for transports". Paris Air Show. Aviation Week & Space Technology. 15 June 1981. pp. 28–29. ISSN 0005-2175.

External links

Wikimedia Commons has media related to Progress D-136.

• "D-136 turboshaft". SE Ivchenko-Progress. Retrieved 11 June 2021.
• "AI-136T /D-136T-2 / AI-136T-2 turboshaft engine family". SE Ivchenko-Progress. Retrieved 11 June 2021.
• "D-136 / D-136 series 1". Motor Sich. Retrieved 11 June 2021.
• "D-136-2". Motor Sich. Retrieved 11 June 2021.