Structure Design And Analysis On Automatic Unfolding Landing Ladder For Lunar Rover

Along with the development of the outer place exploration, there are many countries or organizations have taken on the studying on this aspect in succession. Moon, as the transferring base or springboard which human being develops solar system or other celestial bodies, plays very important role in the outer space exploration. As one part of the lunar lander, releasing structure of lunar lander, which guarantees the lunar vehicle lands on the lunar surface safely and reliably, is the bridge between the lunar lander cabin and the lunar surface. This thesis contributes to the studying on the landing ladder design of folding structure and elastical structure.Firstly, ensure a reasonable releasing structure of landing ladder, after analyzing the specific structures of the lunar lander and the deposited ways. Then design and manufacture the lunar lander ladder.Secondly, build a mathematical model for the landing ladder, furthermore basing on the model built, make a simulation by the utility of ADAMS software and validate its feasibility.Thirdly, do theory analysis and parameters optimization. By modifying the parameters that make effect on the stiffness and the joint damping coefficient, confirm a set of parameters which can reduce the vibration and impulsion, meanwhile enhance the reliability and stability of the system.Finally, design the experimental platform, and set up the testing system. By the test system of the landing ladder on the earth which releases by an elastical structure, measure the acceleration of the ladder in the chosen directions in the process of releasing.All in all, after the structure design and analysis of theory, simulation and experiment, consequently the thesis has acquired certain constructive results, which contributes to settle a solid basement for the further study.