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以对称分布四腿悬架式月球着陆器为研究对象,建立了着陆器软着陆过程六自由度动力学模型并改进了月壤摩擦系数模型;在以上动力学模型基础上,以月球着陆器为例编制了着陆器软着陆六自由度动力学分析程序,利用该程序分析了探测器全机月面软着陆性能,重点研究了动力学模型中的月面等效弹性系数、月面摩擦系数和月面倾斜角度等参数对探测器着陆性能的影响。研究表明上述影响因素对着陆器着陆缓冲性能影响显著,通过对以上参数的合理选择可以有效缓解月球探测器月面软着陆的着陆冲击过载。
Taking the symmetrical four-legged lunar lander as the research object, a six-degree-of-freedom kinetic model of the lander’s soft landing process was established and the lunar soil friction coefficient model was improved. Based on the above kinetic model, In this paper, a six-degree-of-freedom dynamics analysis program of lander soft landing is compiled. The program is used to analyze the lunar soft landing performance of the detector. The study focuses on the lunar equivalent elastic coefficient, lunar surface friction coefficient and Influence of lunar tilt angle and other parameters on the detector landing performance. The research shows that the above influencing factors have a significant impact on the landing cushioning performance of the lander, and the reasonable selection of the above parameters can effectively mitigate the landing impact overload of lunar probe lunar soft landing.