一种弹载相控阵天线多工况快速切换热控方法

摘要

针对弹载雷达相控阵天线需要满足在试验测试维护时长时间工作，而上弹后在无外界附加散热措施情况下短时可靠工作的要求，提出一种基于楔形锁紧装置的可快速更换换热单元天线前端结构设计方法。该方法采用液冷和基于石蜡/石墨复合相变材料储热器作为散热手段，分别实现了稳态散热和瞬态热控。着重阐述了相变材料储热器设计计算时的数学模型和仿真方法。仿真及试验验证表明，可更换换热器相控阵天线前端满足稳态、瞬态多工况热环境稳定工作要求；采用基于石蜡/石墨相变材料储热器作为热沉其储热效果要优于传统金属热沉。%The phased array antenna of missile-borne radar needs to work long hours in experimental tests and maintenance, and provide short-time reliable work performance without any cooling measure on the missile. According to the requirement,a structure design method for antenna front-end is presented,with which cooling elements can be replaced quickly based on wedge locking device. The method utilizes liquid cooling and thermal storage based on paraffin/graphite composite phase-change material ( PCM ) as the means of cooling to achieve steady-state cooling and transient thermal control respectively. The mathemati-cal models and simulation methods during the calculation of thermal storage based on PCM are described. Simulations and experiments show that the proposed front-end design of phased array antenna meets the re-quirements for stable work in thermal environments of both steady state and transient state( multiple work-ing conditions) . The heat sink effect of thermal storage based on paraffin/graphite PCM is superior to that of the tradition.