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Volume 25
Issue 10
10.3390/s25103059
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Review

Gap Measurements in Aerospace Engineering

by
Xinyuan Zhao
1,2,3,
Chao Zhang
2,
Long Xu
4,
Tao Wang
4,
Pei Li
2,
Heng Zhang
2 and
Jun Yang
2,*
1
Chongqing Jiaotong University, Chongqing 400074, China
2
Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
3
Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
4
Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610073, China
*
Author to whom correspondence should be addressed.
Sensors 2025, 25(10), 3059; https://doi.org/10.3390/s25103059
Submission received: 2 March 2025 / Revised: 23 April 2025 / Accepted: 28 April 2025 / Published: 12 May 2025
(This article belongs to the Section Sensors Development)
Versions Notes

Abstract

Advanced precision gap measurement technologies play a pivotal role in ensuring the design and operational efficiency of aerospace systems. Gaps between aircraft components directly influence assembly accuracy, performance, and safety. This review comprehensively explores the state-of-the-art in precision gap measurement technologies used in the aerospace sector. It categorizes and analyzes various sensors based on their operating principles, including optical, electrical, and other emerging technologies. Each sensor’s principle of operation, key advantages, and limitations are detailed. Furthermore, the paper identifies the significant challenges faced in aerospace gap measurement and discusses future development directions, emphasizing the need for enhanced accuracy, adaptability, and resilience to environmental factors. This study provides valuable insights for researchers and engineers in the field, guiding future innovations in precision gap measurement technologies to meet the evolving demands of aerospace manufacturing and maintenance.
Keywords: aerospace engineering; micro-gap measurement; high-precision sensors; measurement methods; dynamic measurement aerospace engineering; micro-gap measurement; high-precision sensors; measurement methods; dynamic measurement

Share and Cite

MDPI and ACS Style

Zhao, X.; Zhang, C.; Xu, L.; Wang, T.; Li, P.; Zhang, H.; Yang, J. Gap Measurements in Aerospace Engineering. Sensors 2025, 25, 3059. https://doi.org/10.3390/s25103059

AMA Style

Zhao X, Zhang C, Xu L, Wang T, Li P, Zhang H, Yang J. Gap Measurements in Aerospace Engineering. Sensors. 2025; 25(10):3059. https://doi.org/10.3390/s25103059

Chicago/Turabian Style

Zhao, Xinyuan, Chao Zhang, Long Xu, Tao Wang, Pei Li, Heng Zhang, and Jun Yang. 2025. "Gap Measurements in Aerospace Engineering" Sensors 25, no. 10: 3059. https://doi.org/10.3390/s25103059

APA Style

Zhao, X., Zhang, C., Xu, L., Wang, T., Li, P., Zhang, H., & Yang, J. (2025). Gap Measurements in Aerospace Engineering. Sensors, 25(10), 3059. https://doi.org/10.3390/s25103059

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