Tumansky R-11

R-11
Preserved Tumansky R-11 turbojet engine at the Polish Aviation Museum
Type	Turbojet
Manufacturer	Tumansky
First run	1956
Major applications	Sukhoi Su-15 Mikoyan-Gurevich MiG-21
Number built	20,900

The Tumansky R-11 (initially AM-11) is a turbojet engine.

Contents 1 Design and development 2 Variants 3 Specifications (R-11F2S-300) 4 References 4.1 Notes 4.2 Bibliography 5 External links

Design and development

The Tumansky R-11 was developed by A.A. Mikulin, S.K. Tumansky, and B.S. Stechkin as a twin-spool axial-flow high-altitude non-afterburning turbojet for Yakovlev Yak-25RV reconnaissance aircraft. This engine was the first Soviet twin-spool turbojet. It was first run in early 1956.^[1] The basic design was very successful and it was evolved into Tumansky R-13 and Tumansky R-25. Also experimental Tumansky R-21 was an evolution of R-11. A total of 20,900 R-11 engines were built.

Variants

• R-11V-300 - first production version, high-altitude, non-afterburning
• R-11F-300 (R-37F) - afterburning version, entered production in 1956, used on MiG-21F, P and U.
• R-11AF-300 - improved version for Yakovlev Yak-28B, L and U.
• R-11F2-300 - new compressor, afterburner and nozzle, used on MiG-21P, PF and FL.
• R-11AF2-300 - R-11F2-300 adapted for Yakovlev Yak-28I, R and P.
• R-11F2S-300 - upgraded version for MiG-21PFM, PFS, S, U and UM, and for Sukhoi Su-15, UT and UM.
• Shenyang WP-7, Chinese license built copies of the R-11

Specifications (R-11F2S-300)

General characteristics

• Type: Afterburning turbojet
• Length: 4,600 mm (181.1 in)
• Diameter: 906 mm (35.7 in)
• Dry weight: 1,124 kg (2,477 lb)

Components

• Compressor: Axial compressor

Performance

• Maximum thrust:
  
  • 38.7 kN (8,708 lbf) military power
  • 60.6 kN (13,635 lbf) with afterburner
  • Overall pressure ratio: 8.9:1
  • Turbine inlet temperature: 955 °C (1,750 °F)
  • Specific fuel consumption:
    
  • 97 kg/(h·kN) (0.95 lb/(h·lbf)) at idle
  • 242 kg/(h·kN) (2.37 lb/(h·lbf)) with afterburner
  • Thrust-to-weight ratio: 53.9 N/kg (5.5:1)

• List of aircraft engines

References

Notes

Bibliography

External links

LeteckeMotory.cz - R-11 (cs,sk)

Tumansky aircraft engines Piston engines M-85 · M-86 · M-87 · M-88 · M-90 Gas turbines RD-9 · RD-10 · R-11 · R-13 · R-15 · R-21 · R-25 · R-29

Lists relating to aviation General Aircraft (manufacturers) Aircraft engines (manufacturers) Airlines (defunct) Airports Civil authorities Museums Registration prefixes Rotorcraft (manufacturers) Timeline Military Air forces Weapons Experimental Missiles Unmanned Accidents/incidents Commercial airliners (by location) Fatalities (by death toll) General aviation Military Records Airspeed Altitude Distance Endurance Firsts Most-produced aircraft