Research and improvement on design method of morphing wing aircraft

Abstract

Different from traditional aircraft, morphing wing aircraft can change their own wingspan in the process of flying, so as to adapt to different environments and tasks, and reduce the space they occupy in transportation and storage. In this paper, a reasonable analysis of the aerodynamic layout of the aircraft wing is carried out, and a large number of data research is done on the most important aileron. Based on the basic theory, the working mechanism of the aileron is analyzed, and finally the optimal position of the aileron is obtained, i.e. the position of relative span 15.4% - 57.4%, relative span is up to 42%. Finally, the surface streamline of the aircraft in flight is studied by CFD simulation, and the skin scheme is determined based on it. Profili, a professional airfoil analysis software is applied to analyze parameters of airfoil, it finally results that the change of wingspan of rectangular wing has no effect on lift coefficient, drag coefficient and lift drag ratio, but it has obvious effect on lift, it proves that the aerodynamic layout of the wing is reasonable. Through the load test, it shows that the increase of lift is consistent with the theoretical prediction by about 50%. After a series of ground and flight tests, the practicability and safety of the morphing wing aircraft are proved.