中国空间科学技术2024，Vol.44Issue(4)：142-152,11.DOI:10.16708/j.cnki.1000-758X.2024.0065
基于热模型相关性验证的火面环境热平衡试验
Thermal test of Martian environment based on thermal model correlation verification
摘要
Abstract
Considering the difficulty in comprehensively simulating the complex and changeable thermal environment of the Martian surface with a thermal balance test,a thermal balance test method based on the correlation verification of the thermal model is established.In addition,vacuum,low-pressure variable-temperature natural convection and low-pressure constant-temperature forced convection are combined to verify the convection,heat conduction,radiation network coefficient and thermal capacity of the analysis model under high-and low-temperature conditions,and the correctness of the design is verified using the thermal analysis model after correlation verification.The results show that the natural convection heat transfer coefficient under the condition that the plate temperature is 11-86 ℃ higher than the air temperature(-91℃)was 0.19-0.57W/(m2·K),and the forced convection heat transfer coefficient under the wind speed of 4-15 m/s is 1.24-2.4 W/(m2·K).The deviation between the modified thermal analysis model and the test results is within±3.5℃.This method realizes the thermal design verification of spacecraft under incompletely simulating the thermal environment,provides an effective thermal analysis model,and has been successfully applied to the thermal balance test of the Zhu Rong Mars rover.关键词
火星表面/热平衡试验/热模型/对流换热Key words
Martian surface/thermal test/thermal model/convective heat引用本文复制引用
张冰强,薛淑艳,周晓舟..基于热模型相关性验证的火面环境热平衡试验[J].中国空间科学技术,2024,44(4):142-152,11.基金项目
行星探测重大工程资助项目 （）
