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为分析飞机的轮轴构型对飞机转弯滑行时侧向荷载分布的影响,利用速度瞬心法,将单个多轮起落架简化为整体性轮胎,计算B737-800、B767-400ER、B777-300ER三种机型稳态转弯滑行时对沥青道面的总侧向荷载,在相同的转弯半径与前轮操作角下,将总侧向荷载有效分配到各个轮胎。研究结果表明:滑行速度和前轮操作角均对低速转弯时轮胎的侧向荷载有影响,且随着速度和前轮操作角的增加其影响越来越显著;三种机型主起落架轮胎最大侧向荷载均出现于靠近转弯中心的内侧轮胎,起落架构型的改变并没有改变轮胎最大侧向荷载的位置;飞机滑行重量增大对转弯侧向荷载的影响可以通过改变飞机起落架的构型来减轻,三轴双轮起落架构型更能有效分担飞机转弯滑行时的侧向荷载。
In order to analyze the influence of aircraft axle configuration on the lateral load distribution during turning and taxiing of aircraft, a single multi-wheeled landing gear was simplified to a monolithic tire by speed center-of-mass method, and the B737-800, B767-400ER and B777-300ER The total lateral load on the asphalt pavement during steady state taxiing is effectively distributed to each tire under the same turning radius and front wheel operating angle. The results show that both the gliding speed and the operating angle of the front wheels have an impact on the lateral load of the tire during turning at a low speed, and the impact is more and more obvious with the increase of the speed and the operating angle of the front wheels. Three types of main landing gear tires The maximum lateral load appears in the inner tire close to the center of the curve. The change of the landing gear structure does not change the position of the tire maximum lateral load. The influence of the aircraft gliding weight on the lateral load of the turning can be changed by changing the structure of the aircraft landing gear Type to reduce the three-axle dual landing gear configuration more effectively share the lateral load when the aircraft turns taxiing.