起落架结构参数对飞机机轮摆振的影响

The Influence of Landing Gear Structural Parameters on Aircraft Wheel Shimmy

建立了飞机机轮摆振运动方程，详细研究了起落架三个重要结构参数：稳定距、支柱刚度和减摆器传动系统扭转刚度对飞机机轮摆振的影响。考虑了各参数之间的耦合作用，严格区分 轮胎型 摆振和 结构型 摆振，并分别予以研究，所得结论为新机防摆设计和现役飞机防摆维护提供了理论依据。

The dynamic equations of aircraft wheel shimmy are set up in this paper, and the influence of three key landing gear structural parameters trail, struct bending stiffness and torsional stiffness of damper linkage on aircraft whell shimmy are investigated thoroughly. The investigation in this paper takes the coupling effects among different parameters into consideration, and distinguishes Tire-Yaw Shimmy and Structural-Torsion Shimmy strictly and studies them separately. The results obtained in this paper prepare the ground for the design of new aircraft and for the safe maintenance of operational ones to prevent the occurrence of shimmy.