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研究了三维空间风场下运输机空投货物舱内移动过程中的建模问题。基于矢量法,推导了扰动风影响下空投货物舱内移动飞行过程中六自由度动力学方程,给出了扰动风参数的计算方法。考虑风速沿机身和翼展方向非均匀分布引起的附加气动力作用,提出扰动风场中飞机气动参数修正的一般方法。仿真验证表明,强扰动风将对空投载机阻尼特性、稳定性产生较大影响。增大阻尼回路增益,接通气流角反馈能够改善复杂大气扰动下空投载机的响应特性。
The modeling problem in the process of moving the cargoes in airspace of a three-dimensional space wind farm is studied. Based on the vector method, the six-degree-of-freedom kinetic equations of airborne cargoes under the influence of disturbance wind are deduced, and the calculation method of disturbance wind parameters is given. Considering the additional aerodynamic effect caused by the non-uniform distribution of wind speed along the fuselage and the spanwise direction, a general method of modifying aerodynamic parameters of aircraft in disturbed wind fields is proposed. Simulation results show that the strong disturbing wind will have a great influence on the damping characteristics and the stability of the empty carousel. Increasing the damping loop gain and turning on the airflow angle feedback can improve the response characteristics of the airborne loader under the complicated atmosphere disturbance.