重型货物空投系统过程仿真及特性分析

System Simulation and Analysis of Heavy Cargo Airdrop System

建立了货物空投系统仿真计算模型,包括货台在舱内和舱外全过程的运动特性、降落伞拉直和充气过程的轨迹特性计算等,提出了伞群模拟和多吊带系统分析的新方法。结合目前已有的降落伞性能计算模型和物伞系统运动模型,对重型货物空投全过程进行了完整计算,开发了空投过程三维动画仿真软件,通过与试验数据的对比,表明本模型能很好地满足应用的需要。分析了空投速度、伞包安装位置和牵引比等因素对空投过程的影响,指出了实际系统的改进方向。

A system simulation model of heavy cargo airdrop system is build, which includes the whole process of cargo movement inside and outside of plane and the trajectory of parachute during its deployment and infla tion. New simulation methods about parachute cluster and multi sling system are developed. Combined with the current study of parachute performance computation and model of parachute and cargo during stable drop phase, full simulation of heavy cargo airdrop system is conducted. A visual simulation software of airdrop with 3D animation is developed based on the computation model. With the comparison of test, this model is proved useful for in engineering. Major factors concerned with the success of airdrop such as speed, placement of parabag and drag coefficient, are analyzed and measures to improve the current system are advanced.