Lotarev D-136

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.^[1]^: 76. The D-136 first flew on a production Mi-26 helicopter in 1980.^[1]^: 79

Design

The core of the engine is identical to the Lotarev D-36 turbofan from which the D-136 is derived.^[2]

Applications

Mil Mi-26

Specifications

Data from Mil's heavylift helicopters,^[1] 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)

References

^ ^a ^b ^c Gordon, Yefim; Komissarov, Dmitriy; Komissarov, Sergey (2005). Mil's heavylift helicopters: Mi-6/Mi-10/V-12/Mi-26. Red Star. Vol. 22. Midland Publishing. ISBN 1-85780-206-3. OCLC 62343294.
^ Bessette, John; Carolla, Mark (December 1981). Bree, Betsy (ed.). "The Mi-26/Halo". Review of the Soviet ground forces. No. RSGF 4-81. Defense Intelligence Agency. p. 10.

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

"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.

[MilHelicopters-1] Gordon, Yefim; Komissarov, Dmitriy; Komissarov, Sergey (2005). Mil's heavylift helicopters: Mi-6/Mi-10/V-12/Mi-26. Red Star. Vol. 22. Midland Publishing. ISBN 1-85780-206-3. OCLC 62343294.

[RSGF4-81-2] Bessette, John; Carolla, Mark (December 1981). Bree, Betsy (ed.). "The Mi-26/Halo". Review of the Soviet ground forces. No. RSGF 4-81. Defense Intelligence Agency. p. 10.

[1]

76

79

[2]