基于飞行仿真平台的相关坐标变换模型

飞行力学中相关的飞行器运动方程都是在地面坐标系中建立的,地面坐标系的前提假设"平面大地"与地球表面具有曲率不符,经纬度能真实反映飞行器的飞行情况,但不能直接运用于飞行器运动方程.针对以上情况,提出了能够运用于地面坐标与经纬度相互转换的模型.在飞行仿真平台上,由飞行器运动方程建立相关的飞行机动动作模型,再由提出的坐标变换模型将运动方程中的相关参数转换为经纬度.实验结果表明,坐标变换模型是合理的,具有实用性,能运用于相关的飞行仿真平台中.

Model of relevant coordinate counterchange on flight simulation platform

Most relevant equations about flight are based on the earth coordinate,the earth coordinate is based on the precondition that the earth are plane,the precondition does not well agree with the truth that the earth has certain curvature.Although the longitude and latitude can reflect the true flight condition it can not be used in the flight equations directly.According to this situation,this paper presented a new model for relevant parameters counterchange in the flight equations to the longitude and latitude.In simulation platform,using the flight equations to build flight activities model,then changing the relevant parameters to the longitude and latitude by using the proposed model.The result shows that the model is reasonable and practical,it can be applied in relevant flight simulation platform.