Propulsive/aerodynamic coupled characteristics of distributed-propulsion-wing during forward flight

Based on the distributed hybrid electric propulsion aircraft technology, we conducted numerical simulation and analysis on propulsive/aerodynamic coupled characteristics of the Distributed-Propulsion-Wing (DPW) during forward flight. Firstly, the parametric model of the DPW was constructed in the component dismantling way by using the super-elliptic equation, the fourth-order Bezier curve, and the Class Function/Shape Function Transformation (CST) arameterization method. Secondly, the numerical analysis on propulsive/aerodynamic coupled characteristics of the DPW sectional airfoil, the unit DPW section, and the whole DPW was carried out in sequence, and comparison with the conventional airfoil-wing performance parameterization. Finally, the internal relationships between the internal and external flow coupling effect and the section-wing performance similar to airfoil-wing were discussed, and suggestions on the propulsion/ aerodynamic integrated design of DPW were presented.