| 摘要: |
| 本文以某星载相控阵天线为研究对象，介绍了天线结构组成。首先分析了天线在轨不同工况下温度场分布，为了减小天线在轨高、低温变化而导致的热变形，提出了在天线阵面外侧胶螺接L型加强筋的优化方案，并分析天线在极端高温和极端低温下的热变形结果。在极端高温工况下，天线热变形数值从优化前3.75 mm减小到0.81 mm；在极端低温工况下，天线热变形数值从优化前2.41 mm减小到1.41 mm。然后通过灯阵试验，对比仿真分析结果，优化仿真分析参数，为天线在轨实际工况仿真分析提供参数依据，为总体修正天线指向精度提供依据，同时为后续星载相控阵天线热变形设计提供工程参考。 |
| 关键词: 热变形 天线 结构设计 |
| 基金项目:上海航天先进技术联合研究基金项目（USCAST2022-40）。 |
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| Structural Design and Thermal Deformation Analysis of A Star-bone Phased Antenna |
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He Kuishang Lai Guoquan Li Dongying Zhang Shuai Liu Shaowu
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Shanghai Aerospace Electronic Technology Institute, Shanghai 201109
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| Abstract: |
| This paper introduces the structure of an antenna. Firstly, the temperature field distribution of the antenna under different working conditions is analyzed. In order to reduce the thermal deformation caused by the high and low temperature changes of the antenna, the optimization scheme of L-shaped vertical blade outside the antenna array is proposed, and the thermal deformation results of the antenna under different working conditions of extreme high temperature and extreme low temperature are analyzed. Under extreme high temperature conditions, the antenna thermal deformation value decreases from 3.75 mm to 0.81 mm. Under extreme low temperature conditions, the value decreases from 2.41 mm to 1.41 mm. Then, through the light array test, the simulation analysis results are compared, the simulation analysis parameters are optimized to provide the parameter basis for the actual working condition analysis of the antenna, analyze the reasonable and reliable thermal deformation results, and ensure the on-orbit electric performance index of the antenna, and it provides engineering reference for subsequent thermal deformation design of antenna. |
| Key words: heat deformation antenna structural design |
