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Kuznetsov NK-25 
Summary
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.
| NK-25 | |
|---|---|
| |
| Type | Turbofan |
| National origin | Soviet Union |
| Manufacturer | Kuznetsov Design Bureau |
| Major applications | Tupolev Tu-22M |
Applications edit
Specifications (NK-25) edit
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 edit
Comparable engines
Related lists
References edit
- ^ a b c d e Otechestvennaya aviatsionno-kosmicheskaya tekhnika - SAMARSKIY NTK (in Russian). Samara, Russia: SNTK imeni N.D.Kuznetsova. pp. 42, 43, 77.
- ^ a b c d e f g h i j "NK-25". motor-s.ru. Archived from the original on 2002-04-08. Retrieved 14 October 2021.
- ^ a b c d "Tot samyy "NK"". engine.aviaport.ru (in Russian). Nikolay Aleksandrov. Retrieved 4 October 2021.
External links edit
- NK-25 on LeteckeMotory.cz (Czech)