Determination of temperature mode of rotary bearings of gas turbine engine with air and fuel lubrication system
The article is devoted to the problem of choosing the optimal parameters of the air-fuel mixture in gas turbine engines (GTE) with the air-fuel lubrication system. Currently, determining the optimal parameters of the air-fuel mixture is significantly complicated by the inability to calculate the t...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Omsk State Technical University, Federal State Autonomous Educational Institution of Higher Education
2020-06-01
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| Series: | Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение" |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2020/%D0%A2.%204,%20%E2%84%96%202%20(%D0%90%D0%A0%D0%B8%D0%AD%D0%9C)/117-128%20%D0%9A%D0%BB%D0%B8%D0%BC%D0%BE%D0%B2%20%D0%92.%20%D0%9D.,%20%D0%94%D1%83%D0%B4%D1%8C%D0%B5%D0%B2%20%D0%94.%20%D0%AF.,%20%D0%A1%D0%B8%D0%B3%D0%B0%D0%B9%D0%BB%D0%BE%20%D0%92.%20%D0%AF.,%20%D0%9A%D0%BB%D0%B8%D0%BC%D0%BE%D0%B2%20%D0%9D.%20%D0%98..pdf |
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| Summary: | The article is devoted to the problem of choosing the optimal parameters of the air-fuel mixture in gas
turbine engines (GTE) with the air-fuel lubrication system. Currently, determining the optimal parameters
of the air-fuel mixture is significantly complicated by the inability to calculate the temperature mode
of the bearings. The main specific characteristics of the gas turbine engine significantly depend on the
amount of air and fuel taken from the flow part and the fuel line of the engine. Therefore, determining
the dependence of the bearing temperature on their operating conditions (parameters of the air-fuel
mixture and operating modes) is an urgent task.
The purpose of this work is to develop a method for determining the temperature of a bearing that is
lubricated and cooled by an air-fuel mixture.
The paper analyzes the thermal state of bearings installed in the rotor supports of a gas turbine engine
with an air-fuel lubrication system. On the basis of the test results of hybrid ball radial thrust bearings
45-126205РЯ the dependences of the friction moment and the coefficient of convective heat transfer on
the parameters of the air-fuel mixture and operating modes are determined. A method for calculating
the temperature of a bearing that is lubricated and cooled by an air-fuel mixture has been developed.
The use of the obtained results in the design of promising short-life gas turbine engines with air-fuel
lubrication system will lead to improved engine performance and will contribute to expanding the
scope of its application |
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| ISSN: | 2588-0373 2587-764X |