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为了验证某型飞机起落架收放机构采用理论计算值的收放性能,建立了该型飞机起落架收放机构的数学模型,采用起落架三维模型和收放作动筒、下落加速器的一维模型进行联合仿真。结果表明:采用理论计算值能够实现起落架在有限时间里的收放任务,各部件在收放运动中无干涉。此外,利用该联合仿真模型研究了收放作动筒、下落加速器结构参数对起落架收放性能的影响,指出收放作动筒活塞截面积和下落加速器活塞杆腔截面积可作为优化设计的优先选取参数,为该型飞机起落架收放机构性能的进一步优化提供参考。
In order to verify the retractable performance of a certain aircraft landing gear retractable mechanism with theoretical calculation, a mathematical model of landing gear retraction mechanism of the aircraft is established. The landing gear three-dimensional model and retractable retractable one-dimensional Model for joint simulation. The results show that the landing gear can be retracted and retracted for a limited time with the theoretical calculation, and all the components have no interference in retractable movement. In addition, the co-simulation model is used to study the effect of retractable actuator and drop accelerator on retractable landing gear performance. It is pointed out that the cross-sectional area of the retractable actuator piston rod and the cross-sectional area of the piston rod cavity can be optimized The parameters are chosen first, which provides a reference for the further optimization of the landing gear retraction mechanism of the aircraft.