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

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]

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.

Shenyang WP-15

Chinese reverse-engineered copy of the R-29-300.^[4]

Applications

• IAR 95 (Intended application)
• Mikoyan-Gurevich MiG-23
• Mikoyan MiG-27
• Chengdu J-10 (Prototype)
• Shenyang J-13 (Intended application)
• Sukhoi Su-22

Specifications (R-29-300)

Data from ^[5]

General characteristics

• Type: Turbojet
• Length: 4,953 mm (195.0 in)
• Diameter: 912 mm (35.9 in)
• Dry weight: 1,880 kg (4,140 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 lb_f) full military (dry)
• 112.81 kilonewtons (25,360 lb_f) 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: =
  
  • 96,8 kg/(h·kN) (0.95 lb/(h·lbf)) at maximum military power
  • 202,76 kg/(h·kN) (2 lb/(h·lbf)) with afterburner
• Thrust-to-weight ratio: 4.446; 6.119 with afterburner.