民用飞机动滑跑起落架载荷计算方法  

An engineering approach to calculate dynamic taxi landing gear loads

作　　者：徐尧 刘景光[1] Xu Yao;Liu Jingguang(Shanghai Aircraft Design and Research Institute,Shanghai 200232,China)

机构地区：[1]上海飞机设计研究院,上海200232

出　　处：《江苏科技信息》2018年第20期37-40,共4页Jiangsu Science and Technology Information

摘　　要：文章建立了包含起起落架和机体的多自由度动力模型,列出系统的运动微分方程组,确定了运动方程中各外力及初始条件,应用基尔法求解运动方程,得到起起落架与机体交点处载荷的时间历程。载荷考虑了飞机滑跑时的集中升力、发动机推力及刹车摩擦力,跑道不平度选用重铺前的旧金山28R跑道数据。In this paer,multi degree of freedoms(DOFs)system model including landing gear and airframe is built,and the equations of motion of the multi-DOFs system are established.The calculation of external forces and the initial conditions of these equations are introduced.Gill approach is used to solve the equations and the loads at the intersection between landing gear and airframe which in time domain are calculated.The centralized lift force,engine thrust,and brake friction when taxis are considered in the model.Un-repaved San Francisco 28R runway is chosen to represented the roughness of taxi runway in the calculation.

关 键 词：动滑跑 微分方程 旧金山28R跑道 

分 类 号：V215.2[航空宇航科学与技术—航空宇航推进理论与工程]