基于折纸技术的组合型缓冲气囊设计及仿真  

Design and Simulation of a Novel Combined Cushion Airbag Based on Origami Technology

作　　者：徐彦[1] 杨毅龙 陈刚 李广兴 陈华健 XU Yan;YANG Yilong;CHEN Gang;LI Guangxing;CHEN Huajian(School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,China;Aerospace System Engineering Shanghai,Shanghai 201108,China)

机构地区：[1]浙江大学航空航天学院,杭州310027 [2]上海宇航系统工程研究所,上海201108

出　　处：《航天返回与遥感》2022年第5期24-35,共12页Spacecraft Recovery & Remote Sensing

基　　金：国家自然科学基金(91748209,11402229);上海航天科技创新基金(SAST2021-059)。

摘　　要：为了改善传统圆柱缓冲气囊的缓冲性能,文章基于折纸技术,设计并研究了一种新型组合型缓冲气囊。基于解析模型,设计了气囊的几何尺寸、初始压力、卸载压力及排气口等;基于控制体积法建立了返回器和组合型缓冲气囊的有限元分析模型,仿真得到了缓冲过程的动力学行为,并对组合型缓冲气囊的缓冲特性进行了分析。和传统圆柱缓冲气囊对比,新型组合型缓冲气囊的最大过载为5.95gn,将返回器的过载降低了39.6%。研究了组合型缓冲气囊在复杂环境下的缓冲性能,探究了非水平着陆面、有风环境、地面障碍等对缓冲过程的影响机理。结果表明:缓冲气囊具有良好的缓冲性能,适用于复杂着陆环境,为大载重返回器的软着陆缓冲系统设计提供技术支撑。To improve the cushioning performance of traditional cylindrical airbags,a novel combined cushion airbag based on origami technology is proposed and investigated.Geometry size,initial pressure,unloading pressure and exhaust port of the airbag are designed preliminarily by analytical model.With the control volume method,the finite element analysis model including return spacecrafts and combined cushion airbag is established,the dynamic behaviors of process are obtained,and the cushioning characteristics of the combined cushion airbag are analyzed.Compared with the traditional cylindrical airbags,the maximum overload of the novel combined airbag is 5.95gn,and the overload of the spacecrafts is reduced by 39.6%.The cushioning performances of the combined airbags in complex environment are studied.The influence of non-horizontal landing surface,wind environment and ground obstacles on cushioning process are investigated.The results shows that the combined cushion airbag has excellent cushioning performances and is fit for complex landing environment.The work provides technical supports for the soft landing systems design for heavy return spacecrafts.

关 键 词：组合型缓冲气囊 折纸 冲击动力学 最大过载 复杂环境 返回式航天器 

分 类 号：V474[航空宇航科学与技术—飞行器设计]