摘要
针对飞机无动力滑翔迫降的实际需要,探究飞机在高度相关风场及可接受接地速度情况下的最远滑翔轨迹。首先建立飞机无动力滑翔轨迹优化问题模型,然后使用高斯伪谱法将轨迹优化问题转化为非线性规划(NLP)问题,最后采用GPOPS-II求解器仿真计算LOT情况下飞机在高度相关风场及可接受接地速度情况下的最远滑翔轨迹。经过仿真计算发现,飞机在可接受垂向接地速度范围内,不同的垂向接地速度对无动力滑翔距离无明显影响;高度相关风场对飞机无动力滑翔距离及时间均有一定程度上的影响,其中顺风滑翔能有效增加无动力滑翔水平距离及时间,逆风飞行与之相反。
Exploring the farthest gliding trajectory of an aircraft under altitude related wind fields and acceptable ground speeds to meet the practical needs of unpowered gliding emergency landing.Firstly,a model for optimizing the unpowered gliding trajectory of an aircraft is established.Then,the Gaussian pseudospectral method is used to transform the trajectory optimization problem into a nonlinear programming(NLP)problem.Finally,the GPOPS-II solver is used to simulate and calculate the farthest gliding trajectory of the aircraft under altitude related wind fields and acceptable ground speeds in LOT conditions.After the simulation,it is found that different vertical ground speeds have no significant effect on the distance of unpowered gliding in the range of acceptable vertical ground speeds;the height-dependent wind field has a certain degree of influence on the distance and time of unpowered gliding,in which the.downwind gliding can effectively increase the horizontal distance and time of unpowered gliding,while the opposite is true for the upwind flight.
作者
丁宁
朱文武
DING Ning;ZHU Wen-wu(Aeronautics Engineering College Civil Aviation University of China,Tianjin 300000,China)
出处
《计算机仿真》
2025年第2期33-39,89,共8页
Computer Simulation
基金
中央高校基本科研业务费(3122020036)。
关键词
无动力滑翔
轨迹优化
高斯伪谱算法
高度相关风场
Unpowered gliding
Trajectory optimization
Gaussian pseudospectral algorithm
Height-dependent wind field
