Aerodynamic Calculation And Performance Estimation For DF-1 Light Aircraft

For an aircraft with canard configuration,the canard wing produces positive lift, and the incidence of canard wing is bigger than that of main wing. The canard wing will stall before the main wing's stalling. Compared with traditional configuration aircraft, light aircraft of canard configuration, with bigger lift, could avoid stalling. It has been demonstrated that some kinds of light plane with canard has higher lift coefficient and good records of safety.In this thesis,the configuration of DF-1 light aircraft has been analyzed firstly. Then three-dimensional digital mockup of DF-1 aircraft is built. Considering the fact that the maximum level speed designed for DF-1 aircraft is below 0.3 Mach and its ceiling is below 4000 m, the compressibility of air can be ignored. The aerodynamic and flight performance of DF-1 light aircraft is studied and analyzed. The polar curve and the change of pressure center and focus point is obtained with the different angles of attack and flight speeds of DF-1 aircraft. The analysis results show that the configuration design of DF-1 aircraft is feasible.