月球探测器软着陆动力学仿真

Soft Landing Dynamics Simulation for Lunar Explorer

随着深空探测技术的发展,新型月球探测器需要在遍布石块、陨石坑和斜坡等复杂月球表面上着陆,因此有必要对月球着陆探测器的着陆性能进行评估。本文对一种四腿可展开式着陆器进行了合理简化,并用AD-AMS软件建立了着陆动力学仿真模型。模型中应用子程序表达缓冲铝蜂窝和月壤的力学性质,通过在预研着陆器的仿真模型上加载,实现了系统的仿真;并得到了月球探测器以给定姿态和着陆速度在不同地面坡度和月壤物理特性下的着陆性能及一般规律,对我国月球探测器软着陆动力学研究具有一定参考价值。

With the development of deep space exploration,next lunar missions will be required to land on complex lunar surface all over slopes,rocks and craters.So it＇s necessary to evaluate the landing performances of lunar explorer.Based on some assumption to a four-legged landing gears,a soft-landing dynamics simulation model is established by using ADAMS software to evaluate the landing performances of lunar explorer.A subroutine for describing the mechanical property of aluminum honeycomb used for impact attenuation is loaded to a prototype lunar-explorer,and attitudes and velocities at different slopes and friction coefficients of regolith on the lunar surface landing performance is obtained given,which has value for research on soft-landing dynamics of lunar explorer.