某雷达天线的风力矩分析及外形优化

Wind Load Torque Analysis and Shape Optimization of a Radar Antenna

文中分析了3种常见风力矩计算方法的优缺点,最终选用较为便捷的数值风洞模拟法对实际工况下平板天线周围的流场进行数值计算。通过Ansys软件的模拟计算,得出该天线在实际工况下的风力矩数值。模拟数值结果表明天线的高度对风力矩影响显著,采用在平板天线两端增加导流板的方式无法大幅降低风力矩。通过计算最终得出结论:尽量降低天线高度,可有效降低天线的风力矩。文中的分析方法可为平板天线的风力矩计算和优化提供参考。

This paper analyzes the advantages and disadvantages of three common calculation methods of the wind load torque,and finally a convenient method of numerical wind tunnel simulation is used to calculate the flow field around the flat antenna under actual conditions.Through the simulation calculation of the Ansys software,the wind load torque of the antenna in the actual working condition is obtained.The simulation results show that the height of the antenna has a significant influence on the wind load torque,and the mode of adding the guide plate at both ends of the flat antenna cannot reduce the wind load torque greatly.Through calculation,it is concluded that the antenna＇s wind load torque can be reduced effectively if the antenna height is reduced.The analysis method in this paper can provide reference for the calculation and optimization of the wind load torque of flat antenna.