The invention discloses a rapid design method for a civil fixed-wing aircraft mooring scheme. The method comprises the following steps: firstly, simplifying and analyzing an aircraft and then determining the rigidity and geometric dimension of each part of the aircraft; then determining the position of a mooring point, and uniformly arranging ground anchor points in an area where the ground anchor points are allowed to exist; distributing the aerodynamic load of the aircraft to the three substructures according to a static balance principle, solving the ground reaction force borne by the undercarriage by utilizing a finite element method, judging whether the tension of the mooring rope is negative or not, forcibly setting the mooring rope to be not stressed if the tension of the mooring rope is negative, and recalculating the reaction force until all the mooring ropes are stressed or not stressed; judging a ground friction force limiting condition and a mooring rope reaction force limiting condition so as to judge whether the position of the ground anchor point is safe or not; and calculating all ground anchor point positions, and outputting a ground anchor point safety area. According to the method, the calculation amount can be reduced, the calculation time consumption is reduced, the safety area of the ground anchor point is given under the condition that the mooring point is determined, and the design and check time of a civil aircraft mooring scheme is shortened.
本发明公开了一种民用固定翼飞机系留方案快速设计方法,首先对飞机简化分析后确定飞机各部件的刚度和几何尺寸;然后确定系留点位置,在地锚点允许存在区域均匀排布地锚点;将飞机的气动载荷根据静力平衡原理分配到三个子结构,再利用有限元法求得起落架所受地面支反力,判断系留绳拉力是否为负,若为负,则强制将该系留绳设为不受力,重新计算支反力,直到所有系留绳都受拉力或不受力;接下来判断地面摩擦力限制条件和系留绳支反力限制条件,从而判断地锚点位置是否安全;计算完所有地锚点位置,输出地锚点安全区域。该方法能够减小计算量,减少计算耗时,并在系留点确定的情况下给出地锚点的安全区域,缩减民用飞机系留方案的设计与校核时间。
Rapid design method for civil fixed-wing aircraft mooring scheme
一种民用固定翼飞机系留方案快速设计方法
2021-04-30
Patent
Electronic Resource
Chinese
IPC: | B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen |
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