Determinação das configurações ótimas de winglets em aeronaves usando técnicas de meta-modelagem e otimização multi-objetivo

Abstract

In the case of aeronautical components, the wing geometry presents great influence on the drag and lift coefficients. Seeking to reduce a portion of the drag force, the use of wing tip surfaces, such as winglets, has proved to be a good solution. However, to obtain the optimal winglet configuration considering its geometric parameters, a wide range of experiments is required. Aiming at alternatives to traditional experimental procedures, given the embedded cost, several computational techniques have been employed. In this scenario, the objective of this contribution is the determination of representative meta-models for the system. Subsequently, by means of multi-objective optimization techniques, it is sought to determine a better configuration based on the drag / lift relationship, using the Kriging Method to obtain the meta-models. The results obtained demonstrate the effectiveness of the methodology proposed as an alternative for the treatment of these problems by reducing the time spent conducting experiments, obtaining concomitantly better combinations between the project variables and meeting the two proposed objectives. In addition, we can see from the results, the optimization of optimal conditions around 3 different combinations.