Research Of Aerodynamic Characteristics Of New Partially Movable Airfoil For MAV

In recent years, micro air vehicle technology has been a hot research topic in the aviation field, and the aerodynamic problems of the micro air vehicle under low Reynolds number are the main challenges which restrict its development. The micro air vehicle has small size, low flight speed and low viscosity, which can lead to a sharp drop in the ratio of airfoil lift and drag.In this paper, the limit conditions of the circular structure of the classical Magnus effect are broken, and the noncircular cross section structure is adopted to obtain the generalized Magnus Force. By superimposing the stream function and potential function, the analytic formula of Magnus Force is solved, and a new type of airfoil with local moving surface is proposed based on the generalized Magnus effect; Meshing the geometric model of new partially movable airfoil by the software of ANSYS ICEM CFD; The simulation calculation of the new partially movable airfoil is carried out by FLUENT software under conditions of different structural parameters and dynamic parameters; The experimental model of the new airfoil is fabricated by 3D printing technology, and the experimental platform is built. CFD numerical results and experimental results show that the new type of airfoil can obtain a higher lift drag ratio than conventional airfoil under the same conditions, also can reduce or prevent the occurrence of the phenomenon of laminar flow, and improve the aerodynamic performance of the airfoil at low Reynolds number.The research results of this paper have important application value for solving the problem of low lift drag ratio under low Reynolds number, and the problem of the laminar separation of micro air vehicle...