Análise de sensibilidade do modelo matemático utilizado em projetos conceituais de aeronaves

Abstract

This work presents a sensibility analysis regarding the mathematical model used in the Conceptual Aircraft Design. This technique uses, based on initial design requirements defined by the designer, iterative processes and tables of historical trends, as well as empirical equations to feed the calculation process with the necessary variables. Computationally implemented through the Python programming language (version 3.6.5), sensitivity analysis is performed by combining three input parameters: wing aspect ratio and constants of the empirical equations for the empty weight fraction and for the takeoff wing loading. As a result of this work, the influence of such combinations of input variables on the aircraft final weights is shown, as well as other characteristics. In addition, two case studies are presented: Passenger Jet Aircraft with 96-114 passenger capacity and Executive Very Light Jet, where both will be compared with real aircraft.