飞机轮胎与跑道间结合系数模型的研究

以试验数据为基础，用最小二乘法拟合飞机机轮与跑道之间的结合系数随飞机速度和滑移率的变化规律，拟合关系式的计算值与实测值吻合较好，同时给出一种描述结合系统与滑移率函数关系中参数的取值范围，对飞机防滑刹车系统的设计和仿真有重要意义。

Determination of Tire-Runway Friction Coefficient

Aircraft speed and slip ratio are the two most important factors affecting tire runway friction coefficient, which, in turn, is essential in the design of antilock brake system. To our best knowledge, there is as yet no quantitative relationship in the open literature for determining tire runway friction coefficient from aircraft speed and slip ratio. We now propose such a quantitative relationship. Ref.2 did propose eq.(1) as such a relationship, except that Ref.2 said nothing about how to determine coefficients B and C in eq.(1). We derived eqs.(2) through (13) for determining B and C . Obviously D in eq.(1) equals the maximum value of tire runway friction coefficient. We can use eq.(9) or eq.(10) to determine B . We can use one of three equations to determine C : eq.(4), eq.(5), or eq.(6). The application of our method to actual determination of tire runway friction coefficient remains to be done.