基于滑移率的起落架起转回弹载荷分析  

Analysis of spin-up and spring back loads of landing gear based on slip rate

作　　者：吴铭 聂宏[1] 张明[1] 史夏正 WU Ming;NIE Hong;ZHANG Ming;SHI Xiazheng(Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学飞行器先进设计技术国防重点学科实验室,南京210016

出　　处：《航空工程进展》2025年第1期82-92,共11页Advances in Aeronautical Science and Engineering

基　　金：航空科学基金(2022Z029052001)。

摘　　要：起落架起转回弹载荷是飞机着陆载荷的重要组成部分。为了在初步设计阶段有效分析起落架的起转回弹载荷,采用起落架轮轴中心处的非线性弹簧阻尼系统模拟支柱弹性,建立双轮支柱式起落架落震动力学模型,分析机轮反转落震和飞机实际着陆模拟落震下的起落架起转回弹载荷和对应的轮胎滑移率,研究飞机航向速度、跑道滑移率曲线、机轮预转角速度对起落架起转回弹载荷的影响。结果表明:机轮反转落震和飞机实际着陆模拟落震仿真结果相近,具有较好的一致性;减小飞机航向速度、给予机轮预转角速度以及降低轮胎与地面的摩擦系数能够降低起转载荷。The landing gear spin-up and spring back loads are the important part of the aircraft landing load.In order to effectively analyze the spin-up and spring back loads of the landing gear in the preliminary design stage,the twowheel strut landing gear drop test dynamic model is established by using the nonlinear spring damping system at the center of the landing gear axle to simulate the strut elasticity,and the spin-up and spring back loads and its corre⁃sponding slip rate under the landing gear drop test of wheel reversal and actual aircraft landing are analyzed.The ef⁃fects of aircraft heading velocity,runway slip rate curve and wheel pre-rotation angular velocity on landing gear spin-up and spring back loads are analyzed.The results show that the landing gear drop test simulation results of wheel reversal and actual aircraft landing are similar and consistent;reducing the heading velocity of the aircraft,giving the wheel pre-rotation angular velocity and reducing the friction coefficient between the tire and the ground can reduce the spin-up loads.

关 键 词：支柱弹性 起转回弹 动力学分析 落震试验 轮胎滑移率 

分 类 号：V226[航空宇航科学与技术—飞行器设计]