大型降落伞开伞过程中的“抽鞭”现象

＂抽鞭＂现象是在大型降落伞开伞过程中可能的顶部甩动现象,它可能造成伞衣破损、不对称充气、伞衣翻转、鞭打等后果,严重时可能造成回收任务完全失败。该文对美国回收系统降落伞开伞过程中出现的＂抽鞭＂现象及其后果进行了综述,并介绍了避免＂抽鞭＂现象的途径。目前对这一现象的机理还缺乏深入研究,有必要从理论和设计上对其进行分析。

"Vent Whip" During Large Parachute Deployment

During the deployment of large parachutes, the vent may whip, which was called ＂vent whip＂ .The resuhing problems of ＂vent whip＂ included canopy damage, unsymmetrical inflation, skirt inversion, bull whip and even completely failure of recovery. In this paper, the ＂vent whip＂ phenomena and damages during parachute deployment were summarized, and the approaches to avoid it were introduced. A review of the literature showed that the mechanism of this phenomenon had not been investigated thoroughly and the theory analysis was severely lagged. Design analysis and simulation should be strengthened to avoid ＂vent whip＂.