论文部分内容阅读
为验证热控涂层性能退化地面模拟试验的有效性,提出了一种利用测热法实现热控涂层在轨测试的辐射计原理样机设计方案。通过对在轨辐射计所接收的外热流进行分析,应用能量守恒原理建立了其测试热控涂层太阳吸收率的数学模型,并在该测试模型的基础上设计辐射计的测热和隔热结构。利用ANSYS软件对辐射计结构的关键组成部分进行了热仿真,并在恒温测试环境下利用辐射计对SR107热控涂层进行了原理验证试验,试验测得的SR107热控涂层太阳吸收率值与该涂层的标定值差别在3%以内,通过分析计算辐射计具有4.2%的测试不确定度。仿真和试验结果表明:辐射计原理样机的设计满足热控涂层性能在轨测试的要求。
In order to verify the effectiveness of simulated ground thermal degradation degradation test, a prototyping prototype of pyrometer for on-orbit thermal control coating was proposed. By analyzing the external heat flux received by the in-orbit radiometer, the mathematical model of the solar absorptance of the thermal control coating is established by applying the principle of energy conservation. Based on the test model, the radiometric thermal and thermal insulation structure. The thermal simulation of the key components of the radiometer structure was carried out by ANSYS software and the principle verification test of the SR107 thermal control coating was carried out in a constant temperature test environment. The measured solar absorptance value of the SR107 thermal control coating The difference from the calibration value of the coating is within 3%, and the radiometer has a test uncertainty of 4.2% through the analysis. The simulation and experimental results show that the design of the prototype radiometer meets the requirements of in-orbit testing of thermal control coating performance.