降落伞收口绳载荷计算方法研究  

Research on Calculation Method for Reefing Line Loads of Parachutes

作　　者：王立武[1] 雷江利[1] 吴卓[1] 包进进[1] WANG Liwu;LEI Jiangli;WU Zhuo;BAOJinjin(Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China)

机构地区：[1]北京空间机电研究所

出　　处：《航天返回与遥感》2019年第4期22-29,共8页Spacecraft Recovery & Remote Sensing

摘　　要：在降落伞系统设计中,考虑到结构强度、质量和开伞过载限制等因素,需要对降落伞开伞载荷进行控制,收口设计是控制降落伞开伞载荷的有效方法。群伞系统通常采用多级收口设计以有效控制多个降落伞充气过程的同步性和开伞载荷的一致性。收口装置是降落伞的关键部件之一,其任何部分失效不仅会造成降落伞系统性能降低,并且有可能导致系统产生灾难性的故障。收口绳是收口装置的主要承力部件,由于降落伞充气展开过程十分复杂,精确计算收口绳的载荷较为困难,空投试验中也无法直接进行载荷测量。文章通过分析研究基本的理论方法,结合相关试验数据,提出了一种保守估计收口绳载荷的计算方法,并且给出了有效、实用的收口装置设计原则和建议。实际空投试验结果和数据表明:该方法是合理可行的,可以为降落伞收口环节设计提供依据和参考。Due to structural strength, weight and parachute overload concerns in parachute system design, the parachute load needs to be controled. Parachute reefing refers to effective method of controlling the stepped and inflation loads of a parachute canopy. The parachute cluster mostly have multiple reefed stages in order to effectively control and manage the parachute inflation synchronization and loads consistency. The reefing system in any parachute is an extremely critical part of the structure. A malfunction of any part of the reefing system can result not only a degraded performance, but also a catastrophic failure. Reefing lines are an essential feature to bear inflation loads of the reefing system, because of the complexity of the parachute inflation process, the force in parachute reefing lines is not only difficult to calculate accurately, but also impossible to measure directly in airdrop test. This paper redresses the physics of parachute reefing by offering underlying theory, data, and proposed rationale for determining a conservative estimate of parachute reefing line loads and in turn suggests practical principles and suggestions in the design of reefing line systems. The experimental results show that the method is reasonable and feasible, it can provide basis and guidance for parachute reefing system design.

关 键 词：收口绳 载荷 研究 降落伞 航天返回 

分 类 号：V529.1[航空宇航科学与技术—人机与环境工程]