摘要
气囊作为一种重要的缓冲防护手段在航天和航空回收领域有着广泛的应用。文章针对一种新型分离式飞行数据记录系统中应急数据存储设备的着陆缓冲气囊,进行结构设计并利用LS-DYNA有限元分析软件进行仿真计算,模拟其在不同坠落姿态和不同坠落环境下的缓冲过程,明确该气囊的缓冲特性,并讨论了气室分布数和充气量对于气囊着陆缓冲性能的影响。计算结果表明:气室分布数和充气量的变化均会改变电子设备的冲击过载;基于所提出的小型电子设备过载要求,0.074kg充气量下的4个气室封闭式气囊结构对于多种工况均有较好的适应性。该研究可为航空航天用的轻小型设备缓冲气囊设计提供参考。
As an important means of cushion and protection,the airbag has been often applied in the field of aerospace and aviation recovery.Aiming at a new type of separate flight data recording system,the structural dimension of the buffer airbag is designed and its performance is numerically simulated by LS-DYNA finite element analysis software.The buffer process is simulated at different falling positions and environments to determine cushioning performance of airbag.Furthermore,the factors affecting the cushioning performance such as the number of gas chambers and air amount are discussed.The calculation results show that the number of gas chambers and inflated volume greatly change the impact overload of equipment system.Based on the required overload acceleration of small electronic equipment system,the structure of four air chambers with 0.074 kg gas has a good adaptability to various working conditions.The research can provide several references on the design of cushioning airbag applied in aeronautics and astronautics for light and small equipment.
作者
王一波
孙建红
侯斌
张延泰
WANG Yibo;SUN Jianhong;HOU Bin;ZHANG Yantai(College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,210016,China)
出处
《航天返回与遥感》
CSCD
2018年第5期25-33,共9页
Spacecraft Recovery & Remote Sensing
基金
江苏高校优势学科建设工程资助项目(PAPD)
关键词
电子设备
气囊
缓冲性能
有限元法
回收着陆
electronic equipment
airbag
cushioning performance
finite element method
recovery and landing
