阻拦系统动力学建模与仿真

 以Mark 7 Mod 1型阻拦系统为基础,借助其中的油液流量系数的经验公式,将其扩展到Mark 7 Mod 3型阻拦系统。首先,将K-5型凸轮曲线进行扩展,重新设计凸轮曲线,使主液压缸的行程增加到4.65 m,进而增加了阻拦系统的容量,实现阻拦系统的优化。其次,考虑到主液压缸的质量不能被忽略,通过引入绳索的弹性形变,实现了阻拦过程主液压缸惯性、滑轮缓冲装置的惯性和飞机惯性的综合动力学仿真。再次,增加了滑轮缓冲系统,使阻拦系统的液压模型更为准确、完整。最后,在考虑了凸轮阀控制曲线以及锥形阀流量系数等各项参数变化的情况下,研究飞机各状态与阻拦系统中各参数的相互影响情况。

Kinetic Modeling and Simulation of Shipboard Arresting System

This study is based on the shipboard Mark 7 Mod 1 arresting system and extends it to Mark 7 Mod 3 arresting system with the help of its experiential formula.First,the stroke of K-5 cam is extended to 4.65 m by redesigning the cam configuration to optimize the arresting system,so that the capacity of the arresting system is increased.Second,the mass of the main pressure carriage and the elasticity of the cable should be considered in the arresting system,so the kinetic simulation consists of the inertia of the main pressure carriage,the damper sheaves and the aircraft.Third,the arresting system model is extended with the addition of damper sheaves,so a more accurate and complete model is established.Finally,in light of the cam configuration and the discharge coefficient variation,an accurate hydraulic model is proposed to analyze the relationship between the states of the aircraft and the arresting system parameters.