To get high accuracy of the identification of aerodynamic parameters, based on the motion equation of an aircraft, a fast algorithm for flight data compatibility check is presented in this paper.

为了提高气动参数辨识的精度，根据飞机运动方程，给出了测量中的系统偏差、尺度因子误差和随机噪声描述，并提出了一种飞行数据相容性检验的快速算法。

youdao

By doing integral computation on the wake surface that is down from the aircraft and vertical to the velocity of far field, it can get the lift, induced drag, wave drag and the total drag.

在飞行器所在流场的下游一垂直于来流速度的截面上进行积分计算，得到升力、诱导阻力、激波阻力和总阻力。

youdao

So if the C919 is to be commercially viable, COMAC needs to get the plane up in the air on or close to its ambitious schedule while the market for medium-range aircraft remains hot.

FORBES: China's Aviation ABCs: Airbus, Boeing, and COMAC