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通过理论分析和伞塔投放试验方法,研究了涡环旋转伞的开伞充气稳定性及其减速导旋运动特性。基于交汇摄影测速法及姿态存储测量法,获得了不同伞衣幅结构及伞绳连接方式对涡环旋转伞系统减速导旋运动的影响规律。试验结果表明,涡环旋转伞系统的平衡转速和平衡落速存在匹配关系,其比值k约为定值,提高该比值的关键是提高涡环旋转伞的导旋力矩,并且当载物的质量一定时,伞衣幅面积与平衡转速和落速成反比,而前后伞绳差的增大可以提高涡环旋转伞系统的平衡转速。
Through the theoretical analysis and the test method of the paratroopers, the stability of the parachute inflatable parachute and the rotational movement of the guide shaft were studied. Based on the intersection of photogrammetry and attitude measurement and storage method, the effect of different types of umbrella cloth webs and the connection of umbrella ropes on the deceleration movement of the vortex ring rotating umbrella system was obtained. The experimental results show that there is a matching relationship between the equilibrium rotational speed and the balance falling velocity of the vortex ring rotating umbrella system, and the ratio k is a fixed value. The key to increase the ratio is to increase the rotational torque of the vortex ring rotating umbrella, For a certain time, the area of the umbrella clothing is inversely proportional to the balance speed and the fall speed, while the increase of the difference between the front and the back can increase the balance speed of the swirling ring umbrella system.