Reprojeto do trem de pouso de uma aeronave cargueira rádio controlada por meio da aplicação do DFMA (Design for Manufacturing and Assembly) e Engenharia reversa (ER).

Abstract

This work addresses the redesign of the main landing gear of the URUTAU Aerodesign team, which participates in the SAE Brasil AeroDesign competition annually, using the DFMA (Design for Manufacturing and Assembly) methodology integrated with ER (Reverse Engineering). The main cause for approaching the theme was observed during the competition in São dos Campos - SP, where during the assembly of the main landing gear there were great difficulties, because for the assembly of this component there was a large number of parts, most of them presenting Assembly. For this we sought methods that could help in the design of a landing gear that presented greater ease of assembly and consequently manufacturing, and then defined the Lucas method of DFMA, which later found that needed an auxiliary tool to be able to Using the existing component as a basis for study, the use of RE (reverse engineering) was defined. Using in this work the DFMA method integrated reverse engineering as a methodology for the redesign, and its evaluation parameters for resizing the assembly requirement. Subsequently, the geometry of the redesigned component was defined where significant reductions were obtained for the evaluation indices of the method used. Reduction from 20 pieces to just 6, which corresponds to a 42% gain for functional analysis, 72% reductions for feed analysis and 84% for assembly analysis. Finally, the simulations were performed using the finite element method with the loading of the component to prove that it met the structural criteria required by the competition and was able to be manufactured and used by the team in the competition.