低空无伞无损空投包装设计及其自稳和缓冲性能验证

Design of Low Altitude Free Drop Packaging and Verification of Its Self-stability and Cushioning Performance

无伞空投具有准备时间短、投送迅速、包装简单、受气象影响小、着陆散布小、可重复利用等优点,成为未来救灾工作中装备物资保障方式的一种新型空投方式。基于某运用需求,文章给出了一种低空无伞无损空投包装设计方案,并针对单/双层的风阻结构设计与偏质心程度对下落过程的影响,进行了对比分析;同时,对拉杆结构在触地缓冲过程中的吸能效果进行了仿真分析。该设计可基于自主展开的柔性风阻结构和偏质心特性,实现下落过程的姿态自稳;将50m高度空投的落地精度控制在了0.1m范围内,并将落地缓冲过程的最大过载限制在2500gn以内。该设计为面向低空空投的空投包装提供了一种解决方案。

Parachute free airdrop has the advantages of short preparation time,rapid delivery,simple packaging,less affected by the weather,small landing dispersion and reusable.It has become a new airdrop mode of equipment and materials support in the future disaster relief work.Based on the application requirements,this paper presents a design scheme of low altitude parachute free and nondestructive airdrop packaging,and makes a comparative analysis on the influence of the single/double-layer design of wind resistance structure and the degree of partial centroid on the falling process.At the same time,the energy absorption effect of the pull rod structure in the process of touchdown buffer is simulated and analyzed.The design can realize the attitude self stabilization in the falling process based on the self expanding flexible wind resistance structure and the characteristics of partial center of mass.The landing accuracy of 50m airdrop is controlled at 0.1m,and the maximum overload in the landing buffer process is limited to less than 2 500gn,which provides a solution for airdrop packaging for low altitude airdrop.