飞机起飞过程的加速特性分析与轨迹仿真

Analysis of the acceleration characteristics and trajectory simulation of aircraft during takeoff

针对起飞过程精度仿真是机场运行动态研究的基础,建立了基于匀加速的起飞轨迹计算模型,通过与QAR记录数据的对比,分析起飞过程的加速特征,建立了基于起飞性能参数的加速度估算模型。以典型机型起飞性能参数为例,对加速过程中各个时刻的加速度、速度、位置等参数进行动态仿真。结果表明,飞机在起飞过程中的加速度基本呈线性衰减规律,依据模型估算出的起飞轨迹与真实轨迹基本吻合,模型精度优于传统的匀加速计算模型。

The precision simulation of takeoff process is the foundation of the dynamic research of airport operation.The calculation model of takeoff trajectory based on uniform acceleration is established.Then,by comparing with the data recorded in QAR,the acceleration characteristics of the takeoff process are analyzed.An acceleration estimation model based on takeoff performance parameters is established.Taking the typical model’s takeoff performance parameters as an example,the acceleration,velocity,position and other parameters in the acceleration process were simulated dynamically.The results show that the acceleration of an aircraft during takeoff is basically linear attenuation.The estimated takeoff trajectory is basically consistent with the real trajectory,and the accuracy of the model is better than the traditional uniform acceleration calculation model.