摘要
月球探测器着陆过程动力学分析是探测器软着陆机构设计中的重要环节,基于国际流行的四腿悬架式着陆器模型为研究对象,研究了月壤变形,着陆器着陆腿弯曲及压缩变形对探测器着陆性能的影响。论文首先在忽略着陆机构弹塑性变形的基础上建立探测器倾斜月面着陆数学模型;其次,综合考虑月壤变形及着陆腿压缩、弯曲变形,通过简化模型,研究了上述变形对着陆性能的影响;最后,通过探测器着陆过程刚柔耦合分析对上述分析予以验证。研究结果表明月壤及支柱压缩变形对探测器着陆性能影响较小,在探测器软着陆设计初期阶段可以忽略不计,但是探测器缓冲支柱弯曲变形对探测器着陆性能将产生较为严重影响,在探测器软着陆机构设计阶段必须予以重视。
In the overall study of the design and performance of the lunar lander, analysis of touchdown dynamics of the landing stage is an important part. In the course of the landing, the lander＇s strut will produce compression and bending deformation. In this paper, we studied the influence of the strut and the soil deformation on the landing performance. Firstly, the mathematical model considering the cantilever gear to be a rigid body with 3 degrees of freedom is presented. Secondly, the influence of the lunar soil and strut deformation on the landing performance is studied. Finally, the rigid-flexible coupling dynamics of a system consisting a flexible cantilever attached to the main lander is analyzed. Results indicate that the compression of the strut and the deformation of lunar soil has little influence on the performance of landing, but the bending deformation of the strut has a considerable effect on the performance of landing.
出处
《机械科学与技术》
CSCD
北大核心
2008年第12期1572-1575,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
国家高技术863计划项目资助
关键词
探测器
支柱
月壤
变形
lunar lander
struts
lunar soil
deformation
