The invention discloses a method for improving the parachute opening performance of a large ram parafoil, and the method comprises the steps: carrying out the folding constraint of air chambers at two sides, carrying out the folding constraint of rear edge parachute cords at two sides of a rear edge, and enabling the air chambers at the same side to be combined with the constraint structures on the rear edge parachute cords, thereby improving the parachute opening performance of the large ram parafoil. When the air chambers on the two sides are inflated to a certain degree, the air chambers on the two sides and the parachute cords on the rear edge can gradually release constraint at the same time; in the initial stage of parachute opening, the middle air chamber begins to inflate, the rear edge parachute cord is in a stressed and tensioned state due to the fact that the extending part is restrained, and therefore the rear edge parachute cord is prevented from being wound, the two side air chambers start to inflate after the middle air chamber is inflated and expanded to be full, and when the two side air chambers are inflated to a certain degree, the two side air chambers and the rear edge parachute cord are gradually released and restrained at the same time. The air chambers on the two sides are gradually unfolded, and the parachute cords on the rear edges on the two sides are gradually stretched till the parachute canopy is inflated and fully expanded. The method can effectively prevent the rear edge parachute cord from being wound around the top in the initial parachute opening stage of the large ram-type parafoil, and meanwhile, the parachute opening impact force generated instantaneously is reduced.
本发明公开一种提升大型冲压翼伞开伞性能的方法,将两侧气室进行收拢约束,将后缘两侧长出的后缘伞绳进行对折约束,并让同一侧的气室及后缘伞绳上的约束结构相结合,使得两侧气室充气达到一定程度时两侧气室及后缘伞绳能同时逐渐释放约束;开伞初期,中间气室开始充气,后缘伞绳由于长出部分被约束处于受力拉紧状态,从而避免后缘伞绳缠绕,中间气室充气张满后两侧气室开始充气,两侧气室充气达到一定程度时两侧气室及后缘伞绳同时逐步释放约束,两侧气室逐步展开、两侧后缘伞绳逐步伸长,直至伞衣充气张满。该方法能有效避免大型冲压翼伞开伞初期后缘伞绳绕顶缠绕,同时减小了瞬时产生的开伞冲击力。
Method for improving parachute opening performance of large ram-type parafoil
提升大型冲压翼伞开伞性能的方法
07.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
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