一种雷达罩通风方式的仿真分析及试验验证

Simulation analysis and validation of an enclosed radome ventilation mode

[目的]雷达罩是现代舰船雷达隐身防护的必要装备,为保证雷达罩内雷达的转动及发射性能不受影响,需解决雷达罩内的环境温度控制问题,而传统设计的通风空调方式不符合要求,为此,提出一种封闭式雷达罩内的通风空调方式。[方法]该通风空调方式是将空调风管接入雷达基座的腔体,送风口位于腔体壁面,利用腔体作为静压箱送风。为验证所提方式的有效性,以某试验用封闭式雷达罩为对象,构建物理模型及数值计算模型,开展雷达罩内的热分布和通风效果的仿真模拟及试验测试。[结果]结果表明:采用雷达罩基座通风空调方式后,雷达罩内的温度能满足设计要求,且温度分布比较均匀。[结论]所设计的雷达罩基座通风空调方式可以满足封闭式雷达罩内的环境控制要求和用于现代舰船雷达隐身设计。

[Objectives]The radome is necessary equipment for the stealth design of radars in modern surface ships.To ensure that the rotation and transmitting performance of the radar in the radome are not affected,the thermal environment needs to be controlled.However,traditional air-conditioning and ventilation modes cannot meet the requirements.Therefore,a new kind of air-conditioning and ventilation mode for an enclosed radome is proposed.[Methods]This new air-conditioning and ventilation mode involves the cavity of the radar base being used as the plenum for the air supply,in which the air-conditioning duct is connected to the radar base and the air supply outlet is located there.In order to verify the effectiveness of this method,a physical and numerical calculation model was established for an experimental enclosed radome,and the simulation and testing of heat distribution were carried out for the air-conditioning effects in the radome.[Results]After adopting the radar base air-conditioning and ventilation mode,the temperature of the radome met the design requirements,and the temperature distribution was uniform.[Conclusions]The proposed radar base air-conditioning and ventilation mode can fully satisfy the environmental control requirements in an enclosed radome,making it suitable for application in the stealth design of surface ships.