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

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

Development

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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

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Specifications (NK-89)

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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

Performance

See also

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Comparable engines

Related lists

References

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  1. ^ a b c d e f g Otechestvennaya aviatsionno-kosmicheskaya tekhnika - SAMARSKIY NTK (in Russian). Samara, Russia: SNTK imeni N.D.Kuznetsova. pp. 42, 43, 77.
  2. ^ a b c d e f g h i j k l m n o p "TUPOLEV Tu-156". janes.migavia.com. Retrieved 8 October 2021.