摘要
文章以"火星探路者"所用伞为基础,对其结构作相应改变后进行充气过程仿真计算,研究结构参数对降落伞充气性能的影响。计算结果表明,盘缝带伞的阻力系数随着带宽和缝宽的增加而减小;但超声速开伞时,降落伞充气过程中伞衣的喘振现象随着带宽的增加而减弱,投影面积的波动随带宽增长变得缓和,这对盘缝带伞的开伞安全性和可靠性有利。
Based on the parachute of Mars Pathfinder, the influence of structure parameters on the inflation performance is researched by using the simulation of inflation process with the structure changed appropriately. Calculation results show that the drag coefficient declines as the widths of the gap and the band increase; but when the parachute is opened in the initial state of supersonic, the surge phenomenon of canopy is weakened and the fluctuation of projected area alleviated as the width of the band increases, which benefit the safety and reliability of the opening of the disk-gap-band parachute.
出处
《航天返回与遥感》
2012年第6期24-29,共6页
Spacecraft Recovery & Remote Sensing
基金
国家自然科学基金(11002070)
航空科学基金(20102C52027)
关键词
降落伞
盘缝带伞
数值模拟
火星探测
parachute
disk-gap-band parachute
numerical simulation
Mars exploration
