Engineering:Kuznetsov NK-89

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Short description: 1980s Soviet/Russian turbofan aircraft engine
NK-89
Type Turbofan
National origin Soviet Union
Manufacturer Kuznetsov Design Bureau
First run 1989[1]
Major applications Tupolev Tu-155
Tupolev Tu-156[2]
Developed from NK-88

The Kuznetsov NK-89 was an experimental alternative fuel turbofan engine, designed by the Kuznetsov Design Bureau.

Development

The NK-89 was a modified version of the hydrogen-powered NK-88[1] and was designed to run on both liquified natural gas[2] (LNG) and kerosene.[2] It was intended for use on the proposed Tupolev Tu-156,[2] a modified version of the Tupolev Tu-154B.[2] This aircraft was to have cryogenic tanks in the rear of the cabin and forward baggage hold to store the LNG.[2] Kerosene would be carried in the wing tanks.[2] In January 1989, a test flight of a prototype of this engine was carried out onboard of the Tupolev Tu-155 flying laboratory where LNG was used as fuel.[1]

By default, the engine would run on LNG,[2] but kerosene could be used when flying out of airports where LNG is unavailable[2] or in case of emergency.[2] The switch from LNG to kerosene could be made in-flight in 5 seconds.[2]

Applications

Specifications (NK-89)

Data from Otechestvennaya aviatsionno-kosmicheskaya tekhnika - SAMARSKIY NTK[1] and janes.migavia.com[2]

General characteristics

  • Type: Two-spool alternative fuel turbofan
  • Length:
  • Diameter:
  • Dry weight:

Components

  • Compressor:
  • Fuel type: LNG[1][2] or kerosene[2]

Performance

See also

Comparable engines

Related lists

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 (in ru) Otechestvennaya aviatsionno-kosmicheskaya tekhnika - SAMARSKIY NTK. Samara, Russia: SNTK imeni N.D.Kuznetsova. pp. 42, 43, 77. 
  2. 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 "TUPOLEV Tu-156". https://janes.migavia.com/rus/tupolev/tu-156.html.