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RESEARCH PRODUCT

Different Wings Flowfields Interaction on the Wing-Propeller Coupling

subject

description

A high-portability numerical technique based on the method of free wake analysis (FWA) is described that analyzes the interference between an aircraft propeller and a wing having different planforms and computes the influence of the wing aerodynamic field on the propeller performance. For an isolated propeller and wing, the models employed are based on the FWA and Prandtl theory, respectively. The performance of the propeller in the presence of the wing is related to the wing angle of attack and to the variation of wing circulation and the corresponding induced velocity at the propeller disk. A numerical model, previously and successfully used, was implemented to account for the effects of a wing on the wing- propeller coupling. To test the robustness of the method, the available experimental data obtained on a scale model of an isolated propeller are used. In a correlation study, the results, when wing and propeller are coupled, show the sensitivity of thrust, power, and efficiency to inflow conditions and blade pitch, as well as to the wing planform