航天器环境工程2025，Vol.42Issue(6)：644-649,6.DOI:10.12126/see.2025040
热真空环境下空间转动机构复合力矩加载方法及试验验证
Composite moment loading method and experimental verification for space rotary mechanisms in a thermal vacuum environment
摘要
Abstract
A torsion-bending composite moment loading method was developed for use in a thermal vacuum environment to simulate the thermo-mechanical and multiphysics-coupled environmental loads experienced by the rotary shaft assembly of the Chang'e lunar lander's solar panel during in-orbit operations.The method enables the synchronous superposition of constant torque,sinusoidal alternating torque,and static bending moments.A dedicated loading device and a friction-reduction mechanism were designed to ensure loading accuracy and environmental compatibility.Ground-based thermal-vacuum tests under high/low-temperature cycling conditions demonstrated the feasibility and repeatability of the method,with the maximum torque loading error only 1.8%,and the bending moment loading error approximately 0.3%,both meeting the design criteria of less than 2%error.The results indicate that the proposed approach effectively simulates in-orbit mechanical conditions and provides a method with high engineering applicability,offering technical support for lifetime prediction,tolerance design,and failure-mechanism analysis of space rotary components.关键词
空间转动机构/扭转–弯曲复合力矩/热真空环境/地面模拟试验Key words
space rotary mechanisms/torsion-bending composite moment/thermal vacuum environment/ground-based simulation testing分类
航空航天引用本文复制引用
周原,马晓荔,马龙,董上,闫琦,居楠,徐宏贵,丁磊..热真空环境下空间转动机构复合力矩加载方法及试验验证[J].航天器环境工程,2025,42(6):644-649,6.基金项目
重点实验室稳定支持科研项目(编号:WDZC614200420230401) （编号:WDZC614200420230401）
