Digital Design and Landing Performance Influence Factors of Deep Space Lander

Symmetrical four-legged suspension lunar lander as the research object,a six-degree-of-freedom dynamic model is established and the model of the lunar soil friction coefficient is improved. Based on the above dynamic models,six degrees of freedom dynamic analysis program on lunar lander soft-landing is applied to analyze soft-landing performance of total lunar lander. The parameters about lunar surface equivalent elastic coefficient,frictional coefficient,inclination angle and so on are studied to analyze the influence on landing performance of the lunar lander. The results show that landing and buffering performance is influenced dramatically on the above factors,and reasonable parameters are chosen to relieve effectively the impact overload of lunar lander soft-landing.