Lyulka AL-21

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The Lyulka AL-21 is an axial flow turbojet engine created by the Soviet company named for its chief designer Arkhip Mikhailovich Lyulka (1908-1984).

AL-21 entered service in the early 1960's. With later marks (AL-21F-3) it was used in the Sukhoi Su-17M 'Fitter', Sukhoi Su-24 'Fencer', early Mikoyan-Gurevich MiG-23 'Flogger', and Sukhoi T-10 (Sukhoi Su-27 'Flanker' prototype). A non-afterburning version powered the Yakovlev Yak-38 'Forger' VTOL fighter.

[edit] Specifications (AL-21F-3)

General characteristics

• Type: Afterburning turbojet
• Length: 5,300 mm (209 in)
• Diameter: 1,000 mm (39 in)
• Dry weight: 1,700 kg (3,740 lb)

Components

• Compressor: 14-stage axial compressor with variable stator blades

Performance

• Thrust:
  
  • 76.4 kN (17,175 lbf) dry
  • 109.8 kN (24,675 lbf) with afterburner
• Overall pressure ratio: 14.75:1
• Turbine inlet temperature: 1,100 °C (2,000 °F)
• Specific fuel consumption:
  
  • 77.5 kg/(h·kN) (0.76 lb/(h·lbf)) at idle
  • 87.7 kg/(h·kN) (0.86 lb/(h·lbf)) at maximum military power
  • 189.7 kg/(h·kN) (1.86 lb/(h·lbf)) with afterburner
• Thrust-to-weight ratio: 64.7 N/kg (6.6:1)
• Life expectancy: 1,800 hours

[edit] Reference

• Page of the engine at Russian Aircraft Encyclopedia