某型电动飞机起飞加速特性分析与仿真模型修正

电动飞机从加速滑跑到飞行至安全高度是一个十分复杂的过程，在计算电动飞机起飞性能时发现用近似匀加速仿真模型得到的起飞距离小于实际的起飞距离。为了准确计算电动飞机起飞性能，在 MATLAB 中建立完整起飞过程的仿真模型并分析模型与实际起飞过程的误差，通过分析电动飞机起飞过程中加速度与速度的变化规律，引入修正函数对仿真模型中的速度进行修正；以某型电动飞机起飞性能计算为例，使用修正前后的模型对起飞过程进行仿真计算，并将计算结果与飞行试验数据进行对比。结果表明：修正后的模型精度优于修正前仿真模型的精度，修正后模型的仿真结果与飞机试飞试验结果基本一致。

Analysis of Take-off Acceleration Characteristics and Simulation Model Modification of a Certain Electric Aircraft

As an ideal green vehicle, electric aircraft is expected to be widely used in the future. It is a very complicated process for an airplane to run from acceleration to flight to a safe altitude. When calculating the take-off performance of an electric aircraft, it is found that the take-off distance obtained by the approximately uniform acceleration simulation model is always smaller than the actual take-off distance. In order to accurately calculate the take-off performance of electric aircraft, a simulation model of the complete take-off process was established in MATLAB and the error between the model and the actual take-off process was analyzed. By analyzing the change law of acceleration and speed during the take-off process of electric aircraft, a modification function was introduced to modify the Speed in the model. Taking an electric aircraft takeoff performance calculation as an example, the model before and after the modification is used to simulate the takeoff process and compare the calculation results with the flight test data. The results show that the accuracy of the modified model is better than the simulation model before modification, and the simulation results of the revised model are basically consistent with the results of the aircraft flight test.