Investigation on landing impact dynamic and low-gravity experiments for deep space lander  

作　　者：CHEN JinBao NIE Hong WAN JunLin LIN Qing 

机构地区：[1]College of Astronautics, Nanjing University of Aeronautics and Astronautics [2]Twenty-eighth Research Institute of China Electronic Technology Group Corporation [3]Shanghai Institute of Satellite Engineering

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第10期1987-1997,共11页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.51105196);Natural Science Foundation of Jiangsu Province(Grant No.BK2011733)

摘　　要：Herein symmetrical four-legged suspension lunar lander was used as the research object, the six-degree-of-freedom dynamic model was built and the model of the lunar soil friction coefficient was improved. For the low-gravity simulation on objects outside earth for future work, the law of dynamic similarity for detectors was deduced. A new method was proposed for simulating the low-gravity field on the surface of objects outside earth, which was achieved by changing initial conditions of the landing by the probe and by subsequent treatment of experimental data. The prototype tested the limitation of this method was verified. It is shown that the prototypes of detectors can be used in detectors low-gravity simulation test with this method, and equipments are simple and operationally effective. This method can be used for later lunar exploration, and low-gravity simulations on extraterrestrial objects.Herein symmetrical four-legged suspension lunar lander was used as the research object, the six-degree-of-freedom dynamic model was built and the model of the lunar soil friction coefficient was improved. For the low-gravity simulation on objects outside earth for future work, the law of dynamic similarity for detectors was deduced. A new method was proposed for simulating the low-gravity field on the surface of objects outside earth, which was achieved by changing initial conditions of the landing by the probe and by subsequent treatment of experimental data. The prototype tested the limitation of this method was verified. It is shown that the prototypes of detectors can be used in detectors low-gravity simulation test with this method, and equipments are simple and operationally effective. This method can be used for later lunar exploration, and low-gravity simulations on extraterrestrial objects.

关 键 词：landing impact low-gravity simulation SIMILARITY 

分 类 号：O347.3[理学—固体力学]