High-temperature resistant resonant cavity microwave sensor for precision blade tip clearance monitoring in aeroengines.

IF 3.9 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Scientific Reports Pub Date : 2025-07-22 DOI:10.1038/s41598-025-11570-1

Haolin Sun

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引用次数: 0

Abstract

In the aerospace field, accurate measurement of the blade tip clearance of aeroengines is highly important for enhancing engine performance and ensuring flight safety. Existing measurement techniques, such as capacitive, inductive, and optical methods, have limitations in terms of stability, application range, or tolerance to complex environments. Moreover, the problem of sensor performance degradation in high-temperature environments has not been effectively resolved. This study aims to design a high-temperature resistant microwave blade tip clearance sensor to overcome these limitations. The sensor structure is designed on the basis of the resonant cavity principle and electromagnetic field theory. The sensor has a radiation efficiency of 97% near 24 GHz, a reflection coefficient as low as 0.01, good measurement resolution within the 0-6 mm clearance measurement range, and the impact of changes in the dielectric constant at high temperatures on its performance is controllable. This research provides a new solution for the measurement of aeroengine blade tip clearance, improving the stability and reliability of the measurement.

Abstract Image

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用于航空发动机叶尖间隙精密监测的耐高温谐振腔微波传感器。

在航空航天领域，精确测量航空发动机叶尖间隙对提高发动机性能和保证飞行安全具有重要意义。现有的测量技术，如电容式、电感式和光学方法，在稳定性、应用范围或对复杂环境的容忍度方面存在局限性。此外，高温环境下传感器性能下降的问题还没有得到有效解决。本研究旨在设计一种耐高温微波叶片间隙传感器来克服这些限制。基于谐振腔原理和电磁场理论设计了传感器结构。该传感器在24 GHz附近的辐射效率为97%，反射系数低至0.01，在0-6 mm间隙测量范围内具有良好的测量分辨率，且高温下介电常数变化对其性能的影响是可控的。该研究为航空发动机叶尖间隙的测量提供了一种新的解决方案，提高了测量的稳定性和可靠性。

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来源期刊

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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