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.
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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