Adjustable guide vane adjustment method for aero-engine compression components in response to temperature distortion

Abstract

The present application provides a method for adjusting an adjustable guide vane of a compression part of an aero-engine to cope with temperature distortion, comprising: arranging at least two temperature sensors at different positions of the engine inlet or the inlet of the compression part in the circumferential direction, for measuring the inlet of the engine or the inlet of the compression part temperature; determine the difference between the highest value and the lowest value of the temperature sensor, if the difference between the highest value and the lowest value is greater than a predetermined value, the value of the temperature sensor with the highest value in the temperature sensor is used as the control input, Adjust the adjustable guide vane angle of the compression part; if the difference between the highest value and the lowest value is less than a predetermined value, the average value of the temperature sensor is used as the control input to adjust the adjustable guide vane of the compression part angle. The method of the present application can improve the engine's ability to resist temperature distortion with less sacrifice in performance, and can also achieve stability expansion only when temperature distortion is encountered, which is beneficial to improve the performance of other flight positions within the entire envelope except for temperature scenarios.

Description

technical field [0001] The application belongs to the technical field of aero-engines, and in particular relates to a method for adjusting guide vanes of aero-engine compression components to cope with temperature distortion. Background technique [0002] During the take-off or flight of the aircraft, due to the operation of the engine, a low pressure area will be generated near the air intake of the aircraft, and the nearby air will be sucked in. When there is a heat source in the air, the air sucked into the engine inlet will be distorted in space and time sequence, that is, Spatial inhomogeneities and temporal steps. After the temperature distortion superimposes the pressure distortion of the intake port itself, it will have an important impact on the performance and stability of the engine, and even lead to engine surge in severe cases, affecting flight safety. [0003] There are many scenarios that produce temperature distortion, such as: when the aircraft is flying in...

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a method for adjusting the adjustable guide vane of the compression part of the aeroengine to deal with temperature distortion, so as to solve or alleviate at least one of the problems in the background art

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