摘要
气囊缓冲着陆系统具有轻质、安全、环境适应性强等特点,能有效保护着陆过程中着陆器的安全,在行星探测中应用广泛。针对一种"水滴形"自扶正气囊缓冲着陆系统建立了动力学模型,描述了气囊基于接触和几何非线性效应在行星表面充气、降落、碰撞、回弹及再碰撞等着陆缓冲过程。依据动力学仿真结果获取了气囊初始气压、初始着陆速度、星表地形等对气囊内部关键部位缓冲过载的影响规律,验证了"水滴形"气囊缓冲着陆系统可实现自动扶正及弹开分离等重要功能特征。研究结果为未来深空探测采用的气囊式缓冲着陆系统的工程设计提供了理论指导和参考。
Airbag buffering and landing systems are widely used for exploring the planet, possessing the characteristics of lightweight, safety, and the excellent ability for adapting to the environment. A dynamics model was built for an airbag buffering and landing system in this work, and the whole process of charging, landing, contacting, bouncing and re-contacting was demonstrated based on contacting effect and geometric nonlinearity. The rules were obtained from the dynamics simulation on how the airbag initial pressure, initial landing-velocity, and planet ground form affected the acceleration load of important inner positions of the airbag. The characteristics validated the capabilities of the airbag buffering and landing system of self-standing and separating. Research results provide a reference and guidance for the engineering design of the airbag buffering and landing system, which may be applied to deep-space exploration.
出处
《振动与冲击》
EI
CSCD
北大核心
2016年第20期125-129,208,共6页
Journal of Vibration and Shock
基金
上海市科学技术委员会资助(06DZ22105)
关键词
行星软着陆
气囊
着陆缓冲
动力学仿真
planetary soft-landing
airbag
landing cushioning
dynamics simulation
