Journal of Systems Engineering and Electronics ›› 2024, Vol. 35 ›› Issue (6): 1397-1410.doi: 10.23919/JSEE.2024.000080

• ELECTRONICS TECHNOLOGY • Previous Articles    

Investigation of the electrical performance of high-speed aircraft radomes using a thermo-mechanical-electrical coupling model

Jianmin JI(), Wei WANG(), Huilong YU(), Juan LIU(), Bo CHEN()   

  • Received:2023-04-13 Accepted:2023-11-07 Online:2024-12-18 Published:2025-01-14
  • Contact: Huilong YU E-mail:huaian.jijianmin@163.com;wang1961@vip.sina.com;YHL23@sina.com;juanliu163@163.com;cb199021@126.com
  • About author:JI Jianmin was born in 1987. He received his M.E. degree from Tianjin University in 2013 and he is a senior engineer in Beijing Institute of Remote Sensing Equipment. His current research area is radome technology. E-mail: huaian.jijianmin@163.com
    WANG Wei was born in 1961. He received his Ph.D. degree from Beihang University in 2002. He is a research fellow and Ph.D. candidate supervisor in Beijing Institute of Remote Sensing Equipment. His research area is electromagnetic field and microwave technology. E-mail: wang1961@vip.sina.com
    YU Huilong was born in 1969. He received his M.E. degree from Tsinghua University in 2010. He is a research fellow in Beijing Institute of Remote Sensing Equipment. His research area is radome technology. E-mail: YHL23@sina.com
    LIU Juan was born in 1968. She received her Ph.D. degree from Beihang University in 2004. She is a research fellow and Ph.D. candidate supervisor in Beijing Institute of Remote Sensing Equipment. Her research area is antenna technology. E-mail: juanliu163@163.com
    CHEN Bo was born in 1990. He received his M.E. degree from Xidian University in 2016 and he is a senior engineer in Beijing Institute of Remote Sensing Equipment. His current research area is antenna technology. E-mail: cb199021@126.com

Abstract:

During high-speed flight, both thermal and mechanical loads can degrade the electrical performance of the antenna-radome system, which can subsequently affect the performance of the guidance system. This paper presents a method for evaluating the electrical performance of the radome when subjected to thermo-mechanical-electrical (TME) coupling. The method involves establishing a TME coupling model (TME-CM) based on the TME sharing mesh model (TME-SMM) generated by the tetrahedral mesh partitioning of the radome structure. The effects of dielectric temperature drift and structural deformation on the radome’s electrical performance are also considered. Firstly, the temperature field of the radome is obtained by transient thermal analysis while the deformation field of the radome is obtained by static analysis. Subsequently, the dielectric variation and structural deformation of the radome are accurately incorporated into the electrical simulation model based on the TME-SMM. The three-dimensional (3D) ray tracing method with the aperture integration technique is used to calculate the radome’s electrical performance. A representative example is provided to illustrate the superiority and necessity of the proposed method. This is achieved by calculating and analyzing the changes in the radome’s electrical performance over time during high-speed flight.

Key words: high-speed flight, thermo-mechanical-electrical (TME), TME coupling model (TME-CM), dielectric temperature drift, structural deformation, electrical performance