直升机两侧舱门伞降差异性分析

Analysis on the Difference of Parachuting between Two Side Doors of Helicopter

直升机因其旋翼单向旋转的运动特性,且侧门伞降受风阻影响显著强于尾门跳伞,旋翼下方流场对两侧舱门伞降的影响存在显著差异。但是目前尚缺乏对该差异的针对性研究,对直升机侧门伞降的安全性缺乏理论支撑。基于某中型直升机侧门跳伞工况,选取某型弹射开伞的降落伞为研究载体,探究其在侧门伞降过程中的运动轨迹,以期明确直升机两侧舱门伞降存在的差异,为后续伞降任务的执行提供有力支撑。

Due to the motion characteristics of one-way rotation of the rotor,and the characteristics that the influence of wind resistance on parachuting at the side door is significantly stronger than that of parachuting at the tail door,the influence of the flow field under the rotor on parachuting at the side door is significantly different.However,there is still a lack of targeted research on this difference,and there is a lack of theoretical support for the safety of helicopter side door parachuting.Based on the side door parachute jumping condition of a medium-sized helicopter,this paper selected a parachute with ejected parachute as the research carrier to explore its movement trajectory during the parachute,in order to clarify the differences between the parachute on both sides of the helicopter and provide a strong support for the implementation of subsequent parachute missions.