摘要
为了研究道面板在高胎压、大质量、短距离起降的作用下的荷载响应规律,根据新型飞机的受力特性和运动规律,分析起落架-机轮-道面耦合作用,并考虑飞机气动力变化,建立起5自由度的飞机地面动力学模型。通过四阶Runge-Kutta法求解微分方程组,研究道面荷载随时间和空间的变化问题。研究结果表明,新型飞机主起落架产生的道面动载系数能达到1.4,飞机下沉速度是影响着陆荷载的主要因素,其次为飞机质量与俯仰角,飞机胎压对着陆荷载影响较小,但对道面板影响较大。
In order to investigate response law of pavement load under new aircraft loading with the characteristics of high tire pressure, heavy weight and short takeoff, this paper analyzed landing gear-wheel-pavement coupling with consideration of aerodynamic force changing based on distinguishing feature of new aircraft landing load and movement law. Furthermore, the dynamic model of the ground plane with five degrees of freedom was established subsequently. In addition, the pavement load along with the change of time and space was explored through solving the dynamic differential equations of landing state with four order Runge-Kutta method. The results show that the dynamic load coefficient of the pavement, which is produced by the main undercarriage of the new aircraft, can reach 1.4. Besides, the aircraft sinking speed is the most important influence factor of landing load.
作者
崔云化
岑国平
梁磊
CUI Yun-hua;CEN Guo-ping;LIANG Lei(Engineering Institute,Air Force Engineering University,Xi’an Shanxi 710038,China)
出处
《计算机仿真》
北大核心
2020年第4期15-21,共7页
Computer Simulation
基金
国家自然科学基金项目(51608526)。
关键词
着陆荷载
动载系数
缓冲器
飞机地面动力学模型
数值仿真
Load of aircraft landing
Dynamic load coefficient
Buffer
Dynamic model of the ground plane
Numerical simulation
