机载刀型天线静强度分析与试验研究

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中图分类号：TN802 文献标志码：A文章编号：1006-0316（2025）07-0048-08

doi ：10.3969/j.issn.1006-0316.2025.07.007

Abstract ： The airborne blade antenna is installed on the surface of the plane，and needs to withstand high-speed wind load during the working process. In order to ensure flight safety，it is necessry to evaluate whether the static strength of the antenna is meets the requirementsduring the lightweight design. In this paper， the finite element analysis method is used to simulate and calculate the surface pressre of the antenna under two load cases; The relationship between the strength and shape/structure of the radome is investigated. It is found that the stress and strain of the radome decreases with the increase of root filet and cover thickness.The downward trend is evidentat the beginning，and then begins to flatten out.And the stress and strain of the overall structure of the antena are simulated and calculated. According to the calculation results， multiple verification methods are used to check the strength ofthe antenna structure and fixing bolts.Finall，the static strength test is used to test the strength of the antenna， and the results show that the damage pressure of the antenna is greater than the wind load presure on the antenna. The static strength analysis and verification method in this paper provide a basis for reasonably evaluating the static strength of blade antennas.

Key words ∵ blade antenna ;wind load ;finite element; static strength ; strength verification

机载刀型天线是飞机上承担通信、应答等数据信息交互功能的重要设备，需满足小型化、轻量化、宽频带、良好气动性能、适应高速飞行和复杂电磁环境等需求，天线通常安装于机体表面，其在工作过程需要承受较大的风载荷，如何采用有效的方法分析以及验证天线的静强度成为关键问题；自前有学者对雷达天线在风载荷作用下的应力和应变进行了数值模拟和试验研究[1-4]，但研究主要是集中在大型地面或车载天线在风载下的强度分析上，关于机载天线在高速风载荷下的静强度研究较少；泪前研究风载主要有理论分析、结构实测、实验室模拟以及风洞试验等方法[5-6]，实测是最直观的验证方法，但周期长、成本高。（剩余6667字）