Kuznetsov NK-22
The Kuznetsov NK-22 is an afterburning turbofan engine, designed by the Kuznetsov Design Bureau.
| NK-22 | |
|---|---|
| Type | Turbofan |
| National origin | Soviet Union |
| Manufacturer | Kuznetsov Design Bureau |
| First run | April 1968[1] |
| Major applications | Tupolev Tu-22M[2] |
| Developed from | NK-144 |
| Developed into | NK-23 |
Development
In April 1967, the Kuznetsov Design Bureau accepted an official request to create a new engine that would later be designated as the NK-22.[2] The design of the NK-22 was based on the NK-144 engine used on the Tupolev Tu-144 SST.[2]
The first specimen of the engine was completed on April 10, 1968[2] and the first factory tests where passed in the same month.[2] State tests took place in October 1970.[2] The engines where later installed on Tu-22M0, M1 and M2 bombers.[2] Serial production of the NK-22 started in 1969 and was terminated in 1984.[1]
A modernised version of the NK-22, the NK-23, first ran in July 1976[1] and was tested in flight on a Tupolev Tu-22M2 bomber.[2] Despite having more thrust (220 kN)[3] than its predecessor, the NK-23 was not put into serial production.[3]
Applications
- Tupolev Tu-22M0, M1 and M2
Specifications (NK-22)
Data from airwar.ru[4] and leteckemotory.cz[2]
General characteristics
- Type: Two-spool low-bypass afterburning turbofan
- Length: 5,200 mm (200 in)[4]
- Diameter: 1,500 mm (59 in)[4]
- Dry weight:
Components
- Compressor: 12-stage axial compressor
- Combustors: Annular multi-nozzle combustion chamber
- Turbine: 3-stage turbine
- Fuel type: T-7 or RT kerosene type fuel
Performance
- Maximum thrust:
- Overall pressure ratio: 14.75[2]
- Bypass ratio: 0.6[2]
- Turbine inlet temperature: 1,087 °C (1,989 °F)[2]
- Specific fuel consumption: 1.95 kg/(kgf⋅h)[2] with full afterburner
References
- Otechestvennaya aviatsionno-kosmicheskaya tekhnika - SAMARSKIY NTK (in Russian). Samara, Russia: SNTK imeni N.D.Kuznetsova. pp. 33, 34, 75.
- Kussior, Zdeněk. "NK-22, NK-23". leteckemotory.cz (in Czech). Retrieved 6 October 2021.
- "Tot samyy "NK"". engine.aviaport.ru (in Russian). Nikolay Aleksandrov. Retrieved 4 October 2021.
- "NK-22". airwar.ru (in Russian). Retrieved 5 October 2021.