Avaliação dos efeitos aerodinâmicos a partir do afilamento e dispositivo de ponta de asa a um vant de competição aerodesign utilizando asa com baixa razão de aspecto

Abstract

This works could understand the effects of wing tapering and wingtip device for an application with low aspect ratio wing (AR), aimed to got a better aerodynamic performance by these modifications. For the study, the parameters of the information project of the Aerosul team were used for the SAE AeroDesign contest in the year 2022. From a rectangular wing, wing geometries were developed with modification of tapering and adding wingtip device, holding constant the aspect ratio (AR) and lift surface area, allowing evalute exclusively the effectiveness of proposed modifications. The models were evaluted from the computational fluid dynamics (CFD), by Altair HyperWorks® CFD software, parametrized according to the flight conditions to which whe wing would be exposed. The comparision was got to an originally rectangular wing, which made it possible to evaluate that the tapering and adoption of the Hoerner wingtip can reduce the induced drag and consequently the vortex, at the cost of lift loss. The modifications made, which allow an effective increase in lift for wings with greater AR, were not satisfactory to the point of compensating the disadvantages of a very short wing, due to the change in lift distribution. The optimized model with the best results managed to reduce drag by 10.5% and allowed an increase of 4.1% in aerodynamic efficiency, however, there was a lift loss close to 7%. [resumo fornecido pelo autor]