Kuznetsov NK-32

NK-32
Type	Turbofan
National origin	Soviet Union/Russia
Manufacturer	Kuznetsov Design Bureau
Major applications	Tupolev Tu-160

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 lb_f) of thrust in maximum afterburner.

A non-afterburning variant known as NK-32 Tier 2 for Tu-160 and NK-65 will be used in the upcoming Russian bomber, PAK DA.^[1]

NK-65 and 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.^{[2] [3]}

Applications

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

Specifications

General characteristics

• Type: Three-spool low-bypass afterburning turbofan
• Length: 6,000 mm (20 ft)^[4]
• Diameter: 1,460 mm (4.79 ft)^[4]
• Dry weight: 3,400 kg (7,500 lb)^[4]

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)^[5] Afterburning thrust: 25 000 kgf (55,000 lbf, 245 kN)^[5]
• Overall pressure ratio: 28.4^[4]
• Bypass ratio: 1.4^[4]
• Turbine inlet temperature: 1630 K (1357 °C)
• Specific fuel consumption: (supersonic) 1.70 kg/kgf/hour^[6](subsonic): 0.72-0.73 kg/kgf/hour^[6]
• Thrust-to-weight ratio: 7.35 Kgf/kg

See also

Comparable engines

• General Electric F101

Related lists

• List of aircraft engines

References

External links

Wikimedia Commons has media related to Kuznetsov NK-32.

• NK-32 on LeteckeMotory.cz (Czech)