Kuznetsov NK-32
1980s Soviet/Russian turbofan aircraft engine
From Wikipedia, the free encyclopedia
The Kuznetsov NK-32 is an afterburning three-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 produces 245 kN (55,000 lbf) of thrust in afterburner.
| NK-32 | |
|---|---|
| |
| Type | Turbofan |
| National origin | Soviet Union/Russia |
| Manufacturer | Kuznetsov Design Bureau |
| Major applications | Tupolev Tu-160 |
An upgraded variant known as NK-32 Tier 2 will be used in modernised Tu-160s, and a non-afterburning variant NK-65 will be used in the upcoming Russian stealth bomber, the Tupolev PAK DA.[1]
The NK-65 and a geared high-bypass turbofan variant, the PD-30, with a thrust of 30,000 kilograms-force (290 kN; 66,000 lbf) has been proposed for use on new Russian wide-body airliners, as well as the upgraded Antonov An-124 Ruslan heavylifter.[2][3]
Applications
Specifications
General characteristics
- Type: Three-spool low-bypass afterburning turbofan
- Length: 6,000 mm (240 in)[5]
- Diameter: 1,460 mm (57 in)[5]
- Dry weight: 3,400 kg (7,500 lb)[5]
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)[6] Afterburning thrust: 25 000 kgf (55,000 lbf, 245 kN)[6]
- Overall pressure ratio: 28.4[5]
- Bypass ratio: 1.4[5]
- Turbine inlet temperature: 1630 K (1357 °C)
- Specific fuel consumption: (supersonic) 1.70 kg/kgf/hour[7] (subsonic): 0.72-0.73 kg/kgf/hour[7]
- Thrust-to-weight ratio: 7.35
