In order to solve the problems of large storage space and difficult transportation of aircraft wing,a longitudinal secondary deformation structure model is designed based on the diamond-back wing to search for a miniaturized launcher.The structural dynamics model of the deformed wing is established by Lagrange equation.The kinematics characteristics of the deformed wing is analyzed,and the dynamic equations of the deformed wing in the process of unrolling are obtained.The results show that the distribution of the vibration energy of the deformed wing is determined by the external excitation or action on the system,and shows different aerodynamic characteristics at different Mach numbers.The modeling method satisfies the kinematics characteristics of the deformed wing during the opening process,which can provide a new idea for the engineering design and application of the variant aircraft.