翼上涵道风扇布局升推耦合特性分析OA

The wing-mounted ducted fan configuration is regarded as one of the most promising power-wing integra-tion layouts for Distributed Electric Propulsion(DEP)aircraft.Understanding and characterizing the lift-thrust coupling between the ducted fan and the wing is crucial for the design of such aircraft.To address the lack of a unified quantita-tive method for describing ducted fan-wing coupling effects,low-speed wind tunnel experiments are combined with nu-merical simulations to investigate the aerodynamic characteristics of three configurations:an isolated wing,an isolated ducted fan,and a wing-mounted ducted fan combination.The aerodynamic performance under coupled and un-coupled conditions is compared,and the improvement in lift-thrust characteristics per unit energy consumption is ana-lyzed relative to the simple superposition of the individual components.Furthermore,coupling factors are proposed to quantitatively represent the interaction mechanism between the ducted fan and the wing,providing new key param-eters for the overall design and aerodynamic layout optimization of DEP aircraft.The results show that the wing-mounted ducted fan generates significant lift augmentation at low speeds and demonstrates a distinct overall efficiency advantage in the medium-speed regime,while at higher speeds the coupling effect gradually transitions to thrust domi-nance,with diminishing gain.These findings establish a theoretical and methodological foundation for the integrated aerodynamic-propulsive design of distributed electric propulsion aircraft.