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为分析低气压环境下,影响航天飞行器控制设备温升的因素,本文首先设计并搭建了低气压环境热测试实验平台,并利用该实验平台对控制设备的瞬时温度进行测试,以考察在不同影响因素下,例如热源分布、外界压强、热源时序工作等因素对设备温升的影响。应用ANSYS热分析软件对该设备进行热仿真模拟,通过对模拟结果与热测试数据进行比较,验证了热仿真模型的计算精度,为热设计提供数据支撑。
In order to analyze the factors that affect the temperature rise of aerospace vehicle control equipment in low-pressure environment, this paper first designed and set up a low-pressure environment thermal test platform, and used the experimental platform to test the instantaneous temperature of the control equipment, Factors such as heat source distribution, outside pressure, heat source timing and other factors on the temperature rise of equipment. The ANSYS thermal analysis software is used to simulate the thermal simulation of the equipment. The simulation results are compared with the thermal test data to verify the accuracy of the thermal simulation model and provide data support for thermal design.