摘要
对某大型降落伞系统的拉直过程进行多阶段、多有限段和多自由度的动力学建模。通过仿真研究了牵顶伞和剥离带等改进措施对主伞拉直后伞衣抽打现象影响,重点分析比较了带与不带牵顶伞时伞衣位形、抽打速度、偏离距离等参数的变化,分析结果可为大型降落伞的工程设计、改进和使用提供理论支持。
Based on the finite element thought,a multistage,multi-finite-element and multi-freedom dynamic model of the deployment process of a large parachute was built. The effects of the attached apex drogue and peel off band on the phenomenon of bull whipping formed after the deployment process of the main parachute were studied through simulation. The analysis was focused on the comparison of shape movements of canopy,velocity of bull whipping and distance of departure with or without the attached apex drogue. The conclusion can provide theoretic help for the engineering design department in designing,improving and using the large parachute.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2010年第4期49-54,共6页
Journal of National University of Defense Technology
基金
国家部委资助项目
关键词
牵顶伞
抽打现象
抽打速度
偏离距离
剥离带
attached apex drogue
phenomenon of bull whipping
velocity of bull whipping
distance of departure
peel off band
