空间太阳观测入射窗组件热分析与试验验证  

Thermal Analysis and Verification Test of the Entrance Window Assembly for Space Solar Observatory

作　　者：王晨洁 陶文铨[1] 杨文刚 马奕新[2] 秦德金 李福[2] WANG Chenjie;TAO Wenquan;YANG Wengang;MA Yixin;QIN Dejin;LI Fu(Key Laboratory of Thermo-Fluid Science and Engineering of MOE,School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China;Aerospace Engineering Department,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an 710119,China)

机构地区：[1]西安交通大学能源与动力工程学院热流科学与工程教育部重点实验室,西安710049 [2]中国科学院西安光学精密机械研究所空天技术部,西安710119

出　　处：《光子学报》2022年第4期217-230,共14页Acta Photonica Sinica

基　　金：国家自然科学基金(No.51836005);国家自然科学基金创新研究群体基金(No.51721004),111项目(No.B16038)。

摘　　要：空间太阳观测光学载荷在轨期间需要对日定向长期工作,入射窗位于载荷最前端,直接面对太阳,工作环境十分恶劣,因此入射窗的设计尤为重要。首先对入射窗进行了光-机-热一体化太阳直射热流影响抑制的设计,然后研究了入射窗的热分析方法以评估其对太阳热流的抑制能力,并设计了专门的热平衡试验以验证设计的合理性与分析方法的正确性,最后对热分析数学模型进行了修正,修正后模型的分析结果与试验结果吻合良好。将修正后的模型用于预测入射窗组件的实际在轨温度水平,分析得到窗口玻璃的最高温度为26.3℃,同时主镜温度可以稳定控制在22±2℃,说明所设计的入射窗组件能够满足在轨使用需求并留有一定的余量。This paper describes the design of the entrance window assembly for the Full-disk Magnetograph(FMG) which is one of the three main payloads of the Advanced Space_based Sloar Observatory mission(ASO-S). The entrance window plays the role to reduce the effect of external space environment on the After Optical System(AOS),to transmit the visible light,and to prevent the infrared radiation and pollution,hence,it is one of the most important components in the design of space solar observatory payloads,as the entrance window is facing the sun all the time on orbit,both its design and verification test are very challenging task.A heat-rejecting entrance window assembly of FMG is designed to ensure that the imaging quality of the whole system is not affected by the drastic change of space environment and the temperature distributions can meet the thermal requirements,then the mechanical,optical and thermal design processes are briefly described. FMG is sun-oriented on orbit with long-term operation,and its optical system is transmissive. Thus,its mirror temperature will be more sensitive to the given solar radiation parameters than the other space optical payloads,and it is necessary to correct solar radiation parameters to improve the accuracy of simulation. Thermal analysis method with equivalent solar radiation parameters is studied to evaluate the heat-rejecting ability of the HEWA,and three analysis cases are selected based on the heat flux of the HEWA and the operational mode of FMG on orbit,while,Case1and Case 2 are normal operational modes,and Case 3 is a calibration mode.Only 5 nm wide transmission pass-band around the science wavelength(532 nm) is able to reach the AOS of FMG because of the spectral selectivity of the window glasses. The thermal balance test of the HEWA not only needs to simulate the solar radiation intensity, but also needs to simulate solar collimation and spectral characteristics accurately. The solar simulator can simulate the solar radiation intensity,collimation and spectral characteristi

关 键 词：空间太阳观测 隔热型入射窗组件 等效太阳辐射参数 太阳模拟器 热平衡试验 

分 类 号：V447.1[航空宇航科学与技术—飞行器设计]