Abstract:

Taking the asymmetric span morphing wing as the object, a dynamic model of vehicle with asymmetric span morphing wing is constructed, and the influence of the asymmetric morphing wing on the dynamics is analyzed. Firstly, the multirigidbody model of vehicle is established in order to highlight the differences arising from the asymmetric span morphing by utilizing the Newton Euler method. Secondly, on the basis of computational fluid dynamics (CFD) calculation of aerodynamic data, the properties of the dynamics of deformation are discussed including offset of center of gravity, moment of inertia, aerodynamic characteristics, rolling moment and the longitudinal static stability of the vehicle. Finally, with asymmetric dynamic change of wingspan as the system input, dynamic characteristics of the vehicle are analyzed by introducing the morphing velocity and mass ratio of the morphing wing to the body as two key parameters. The results show that asymmetric span dynamic change could make the vehicle rapidly roll, as a kind of active control.