Tumansky R-29

The Tumansky R-29 is a Soviet turbojet aircraft engine that was developed in the early 1970s.[1] It is generally described as being in the "third generation" of Soviet gas turbine engines which are characterized by high thrust-to-weight ratios and the use of turbine air cooling.[2]

R-29
Tumansky R-29-300 on display at the Deutsches Museum Flugwerft Schleissheim
Type Turbojet
Manufacturer Tumansky, UMPO , MMP Chernyshev , AMNTK Sojuz
First run 1972
Major applications MiG-23
Developed from Tumansky R-27
Developed into Tumansky R-35

Variants
R-29-300

Original variant. Used in the MiG-23MF and related variants.[3]

R-29B-300

Simplified variant of the engine intended for the MiG-27.[3]

R-29PN

Advanced variant that replaced the -300 model on non-export aircraft.[3]

R-29BS-300

Variant with modified gearbox. Used in several export variants of the Sukhoi Su-17.[3]

Khatchaturov R-35-300
Developed version used in late variants of the MiG-23

Applications

Specifications

Data from Gunston

General characteristics

  • Type: Turbojet
  • Length: 4,991 mm (196.5 in)
  • Diameter: 968 mm (38.1 in)
  • Dry weight: 1,760 kg (3,880 lb)

Components

  • Compressor: Two-spool Five-stage low pressure, six-stage high pressure (axial)
  • Combustors: Annular
  • Turbine: Two-stage high pressure, single-stage low pressure

Performance

  • Maximum thrust:
  • 78.48 kilonewtons (17,640 lbf) full military (dry)
  • 112.81 kilonewtons (25,360 lbf) with boosted afterburner (CSR mode, altitude < 4,000 metres (13,000 ft))
  • Overall pressure ratio: 12.9:1
  • Air mass flow: 105 kg/s
  • Turbine inlet temperature: 1,083 °C
  • Specific fuel consumption: =
    • 95,8 kg/(h·kN) (0.94 lb/(h·lbf)) at maximum military power
    • 183.5 kg/(h·kN) (1.81 lb/(h·lbf)) with afterburner
  • Thrust-to-weight ratio: 4.55; 6.54 with afterburner.
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See also

Comparable engines

Related lists

References

Citations
  1. Gunston 1989, p. 168.
  2. Sosounov, V.A. (1990). The Development of Aircraft Power Plant Construction in the USSR and the 60th Anniversary of CIAM. AlAA/ASME/SAE/ASEE 26th Joint Propulsion Conference, July 16–18, 1990. Orlando, Florida. AIAA-90-2761.
  3. TMKB Soyuz R29-300 (subscription required). Janes Aero Engines. Edited: 1 April 2010. Retrieved: 8 September 2010.

Sources
  • Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9.
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