Avaliação aerodinâmica da influência de defeitos construtivos em uma aeronave não tripulada

Abstract

It is known that aircraft built for AeroDesign competitions are more prone to construction defects on erodynamic surfaces due to the construction limitations student teams face. Because of this, this work aims to evaluate the aerodynamic impact of a type of defect on the generation of drag and in the critical conditions of an aircraft operating in the subsonic regime based on two-dimensional analyses of the Selig 1223 aerodynamic profile. Different combinations of geometry and defect position were evaluated using the XFOIL application in search of the most critical region of the profile. Next, this region was evaluated using the Ansys Fluent application to verify the impacts on flow due to the defect when compared with the clean geometry. With this, the sensitivity of the leading edge region of the profile to the presence of defects was identified, where the most influential impacts were identified in the generation of drag and critical conditions. Furthermore, the generation of recirculation regions located immediately after the defect and its catalytic effect on flow separation were observed, which occurs more accentuated with the increase in the angle of attack of the aerodynamic profile.