摘要
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。
To verify the effectiveness of ground simulation test of thermal control coating performance degradation,a design scheme for the radiometer principle prototype is proposed,which uses calorimetry to realize on-orbit test of thermal control coatings.By analyzing the space heat flux that the on-orbit radiometer receives,a calculation model for testing solar absorptance of the coatings is established according to energy conservation principle.Based on this mathematical model,the radiometer structure was designed.The thermal simulation was conducted for the key components of the radiometer structure using ANSYS software.The radiometer SR107 thermal control coating was tested in an isoperibol using the radiometer.Experimental result shows that the difference between the tested solar absorptance and the calibration value for SR107 is within 3%,and the measurement uncertainty is 4.2%.Both simulation and experimental results show that the design of the radiometer principle prototype satisfies the requirement of thermal control coating on-orbit test.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2011年第2期241-246,共6页
Chinese Journal of Scientific Instrument
基金
长江学者和创新团队发展计划(IRT0705)资助项目
关键词
热控涂层
辐射计
在轨测试
热仿真
太阳吸收率
thermal control coating
radiometer
on-orbit test
thermal simulation
solar absorptance
