空中加油变质量飞机建模与仿真

Modeling and Simulation of Aircraft with Varying Mass in Aerial Refueling

针对空中加油给加/受油机带来的变质量影响,进行了燃油传输过程中飞机的建模与仿真。将质量的变化等效为对飞机的干扰力和干扰力矩,推导了变质量飞机的平移动力学方程和转动动力学方程。根据空中加油实际情况对模型进行了简化。在此基础上,推导了飞机纵向通道带变质量干扰的线性化小扰动模型。最后分别进行了加油机和受油机的计算机仿真,结果表明:加油机受到影响较小,而受油机俯仰角、空速、高度变化剧烈。

To the effects of varying mass of tanker and receiver in aerial refueling,the dynamic equations of aircraft are derived and the simulation is done when the fuel is transferring.By treating the varying mass as disturbance forces and moments to such aircraft,the dynamical equations of translational and rotational motion of mass-varying aircraft are derived.After simplifying the model according to the practical situation,the linear small perturbation model with varying mass disturbance in the longitudinal channel is derived.The computer simulation of examples of tanker and receiver in aerial refueling show that the effect on tanker is small,however the pitch angle,airspeed,altitude of receiver changes acutely.