冲压空气涡轮释放过程运动学分析

冲压空气涡轮作为飞机上的应急能源,能在出现紧急情况时提供电能,保证飞机上电传操控和电子设备的正常工作。本文以冲压空气涡轮为研究对象,基于机械运动原理对系统模型进行了简化,基于刚体假设,结合MATLAB软件从理论上研究结构在释放过程中的运动学问题。给出了冲压空气涡轮系统释放过程中各个关节空间位置的理论求解方法,得到了关节在空间中的运动轨迹和对应的速度时间曲线、加速度时间曲线,结果表明:冲压空气涡轮系统的释放过程在1 s以内,释放速度较快,且各关节在释放初始阶段速度、加速度响应较大。本文的工作可为后期不同冲压空气涡轮系统构型的初步设计提供理论依据,指导冲压空气涡轮释放的仿真计算和试验。

Releasing Kinematics Analysis of Ram Air Turbine

The ram air turbine (RAT) acts as an emergency energy source on the aircraft and provides electrical energy in the event of an emergency to ensure the on-board transmission control and the normal operation of the electronic equipment. The ram air turbine is taken as the research object, and the system model is simplified based on the principle of mechanical motion. The kinematics problem of the structure in the release process is theoretically studied using MATLAB. The theoretical solution method for the spatial position of each joint in the RAT system release process is given. The motion trajectory of the joint in space and the corresponding velocity time curve and acceleration time curve are obtained. The results show that the release process of the RAT system is within 1 s. The release speed is fast, and the speed and acceleration response of each joint in the initial stage of release are quite large. This work can provide theoretical basis for the preliminary design of different RAT system configurations in the later stage, and guide the simulation calculation and experiment of RAT release.