I drawn the Simulink model of a quadcopter with virtual joystick input and now I want to add the wind but I am little bit confused how to add wind with that model. actually my model is like that input joystick to the rotational+ translational and get output from 3d Animation. I add wind model to my rotational sub model my but some one says like you can not add x,y and z component to the pitch , roll and yaw. so I trying to add this wind with thrust force like toque along x direction add with wind x component and torque y with wind y component and torque z with wind z component but still I think there is problem in units like I am adding force with velocity so its not make sense. I saw some paper in which wind is added like force and momentum component but I am not clear with that idea , can anyone help how should I connect wind component and why should I add momentum and force component???