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1980s Soviet/Russian turbofan aircraft engine From Wikipedia, the free encyclopedia
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 |
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]
Data from Otechestvennaya aviatsionno-kosmicheskaya tekhnika - SAMARSKIY NTK[1] and janes.migavia.com[2]
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