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Kuznetsov NK 32

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Kuznetsov NK-32

The Kuznetsov NK-32 is an afterburning 3-spool low bypass turbofan jet engine which powers the Tupolev Tu-160 supersonic bomber, and was fitted to the later model Tupolev Tu-144LL supersonic transport. It is the largest and most powerful engine ever fitted on a combat aircraft. It produces 245 kN (55,000 lbf) of thrust in maximum afterburner.

Contents

A non-afterburning variant known as NK-32 Tier 2 and NK-65 will be used in the upcoming Russian bomber, PAK DA.

A geared high-bypass turbofan variant PD-30 , with a thrust of 30 tonnes (around 300 kN) has been proposed for use on new Russian wide-body airliners, as well as the upgraded Antonov An-124 Ruslan heavylifter.

Applications

  • Tupolev Tu-160
  • Tupolev Tu-144LL
  • Yakovlev Yak-43
  • PAK DA

    • General characteristics

  • Type: Three-spool low-bypass afterburning turbofan
  • Length: 6,000 mm (20 ft)
  • Diameter: 1,460 mm (4.79 ft)
  • Dry weight: 3,400 kg (7,500 lb)

    • Components

  • Compressor: 3-stage LP (fan), 5-stage IP, 7-stage HP
  • Combustors: annular
  • Turbine: 1-stage HP, 1-stage IP, 2-stage LP

    • Performance

  • Maximum thrust: Cruise thrust: 14 000 kgf (31,000 lbf, 137 kN) Afterburning thrust: 25 000 kgf (55,000 lbf, 245 kN)
  • Overall pressure ratio: 28.4
  • Bypass ratio: 1.4
  • Turbine inlet temperature: 1630 K (1357 °C)
  • Specific fuel consumption: (supersonic) 1.70 kg/kgf/hour(subsonic): 0.72-0.73 kg/kgf/hour
  • Thrust-to-weight ratio: 7.35 Kgf/kg

    • References

    Kuznetsov NK-32 Wikipedia
    (Text) CC BY-SA