Engineering:Kuznetsov NK-25
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Short description: 1960s Soviet turbofan aircraft engine
| NK-25 | |
|---|---|
| |
| Type | Turbofan |
| National origin | Soviet Union |
| Manufacturer | Kuznetsov Design Bureau |
| Major applications | Tupolev Tu-22M |
The Kuznetsov NK-25 is a turbofan aircraft engine used in the Tupolev Tu-22M strategic bomber. It can equal the NK-321 engine as one of the most powerful supersonic engines in service today. It is rated at 245 kN (55,000 lbf) thrust. The three shaft engine we call the NK-25 was designed in the years 1972–1974. It is made by the Soviet Kuznetsov Design Bureau.
Applications
Specifications (NK-25)
Data from motor-s.ru,[2] Otechestvennaya aviatsionno-kosmicheskaya tekhnika - SAMARSKIY NTK[1] and engine.aviaport.ru[3]
General characteristics
- Type: Three-spool low-bypass afterburning turbofan
- Length: 7,300 mm (290 in)[2]
- Diameter: 1,770 mm (70 in)[2] at the nozzle casing
- Dry weight: 3,575 kg (7,882 lb)[2]
Components
- Compressor: 3-stage LP, 5-stage IP and 7-stage HP[3]
- Combustors: Annular multi-nozzle combustion chamber[2]
- Turbine: 4-stage axial turbine[2]
Performance
- Maximum thrust:
- Overall pressure ratio: 25.9[3]
- Bypass ratio: 1.45[2]
- Air mass flow: 211 kg/s (470 lb/s)
- Turbine inlet temperature: 1,597 K (1,324 °C; 2,415 °F)[3]
- Specific fuel consumption:
- Thrust-to-weight ratio: 6.99 kgf/kg (31.1 N/lb)
See also
Comparable engines
Related lists
References
- ↑ 1.0 1.1 1.2 1.3 1.4 (in ru) Otechestvennaya aviatsionno-kosmicheskaya tekhnika - SAMARSKIY NTK. Samara, Russia: SNTK imeni N.D.Kuznetsova. pp. 42, 43, 77.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 "NK-25". http://motor-s.ru/NK25.htm.
- ↑ 3.0 3.1 3.2 3.3 "Tot samyy "NK"" (in ru). Nikolay Aleksandrov. http://engine.aviaport.ru/issues/08/page39.html.
External links
- NK-25 on LeteckeMotory.cz (Czech)
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