Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Flying Wing Shape Multi-Objective Optimization Genetic Algorithms and AVL Software
Submission Author:
Petrus Fiore , MG
Co-Authors:
Petrus Fiore, yohan diaz, Guilherme Ferreira Gomes, Sebastião Simoes Cunha Jr
Presenter: Administrador ABCM
doi://10.26678/ABCM.COBEM2021.COB2021-0801
Abstract
Flying wings are aircrafts without tail, the lack of surfaces as horizontal and vertical stabilizers becomes the meeting of aerodynamic and stability requirements more difficult. In this work, the optimization of a flying wing UAVs is developed integrating a code in MATLAB with the aerodynamic software AVL. The number of variables involved in the optimization process of an airplane wing is considerable, and the results not always obey proportional relations or trivial solutions, which can hinder the job of designing a UAV that needs to fulfill some purposes. So, the use of computational optimization methods is necessary to cover all possibilities and choose the best design variables configuration. The parametric model of the wing is generated via a code that allows to change dimensions and characteristics such as: span, dihedral angle, sweep angle, the chord and its position in reference to the different sections of the wing, allowing total customization of the flying wing. Aerodynamic characteristics such as wing lift and drag coefficients, and stability pitching/directional moment coefficients are extracted and utilized to be part of the fitness functions of a multi-objective optimization, in which the aerodynamical efficiency is maximized and both longitudinal and directional stabilities are considered. The optimization method utilized is Multi-objective Genetic Algorithm (MOGA), that covers all the diverse regions of the solution space. Partial results shows a tendency of flying wing shapes similar to other flying wings found in the literature, that is, the wing geometry is like a delta wing configuration with accentuated sweep and dihedral angles. It is expected a more detail and deep discussion about the influence of each design variable on the shape of this kind of aircraft configurations.
Keywords
Flying wing, Multi-Objective Optimization, Aerodynamics, stability
