Analysis of Axial-Flow and Tilt Aerodynamic Characteristics of Ducted Propellers

Ducted propellers possess characteristics such as high aerodynamic efficiency, compact structural design, low noise level, and high safety. With the development of electric aircraft, the potential for duct propeller application has become increasingly prominent. In order to further enhance the aerodynamic efficiency of ducted propellers, this study, based on the Navier-Stokes equations, employs the Computational Fluid Dynamics (CFD) method to conduct an in-depth analysis of the aerodynamic characteristics of ducted propellers in the axial flow state and explore their flow characteristics. Firstly, a numerical simulation method suitable for solving ducted propellers is established, and case verification is carried out to ensure the accuracy of the method. Based on this method, the influence laws of different geometric parameters on the aerodynamic efficiency of ducted propellers are analyzed. Based on the simulation results in the axial flow state, a set of parameter combinations with relatively high thrust was selected, and its tilted flight state.