Análise da estabilidade aeroelástica de uma asa de ARP

Abstract

The objective of this work is to perform the aeroelastic analysis of the wing of a remotely piloted aircraft designed and built by the Carancho Aerodesign team, in the year 2017. Aeroelasticity studies the interaction between elastic, inertial and aerodynamic forces present on surfaces subjected to the air flow. These interactions can cause structural damage and consequent problems in the operation of these surfaces. The most common and perhaps most catastrophic form of interaction is a flutter, a self-excitation generated by the coupling of modes of vibration and feedbacked by the flow of a fluid. Determining the frequency and speed at which flutter occurs will be the main focus of the work. For this, it is necessary to perform experimental tests to determine the mass and stiffness matrices of the studied system. These tests were performed statically and dynamically, with the aid of accelerometers and structural excitation mechanisms. After the determination of the structural model, the aerodynamic model is made using a panel method and the aeroelastic analysis is performed using the g-method. At the end of the analysis, the aeroelastic safety of the structure will be verified under a wide speed range. However, this was not the only result, although it is a work devoted to the analysis of a wing of an RPA, the analytical and computational steps that allow the aeroelastic analysis of any flat surface, from the wing of a commercial aircraft to the blades of a wind turbine.