Comparative study of system identification methods applied to aeroelastic models tested in wind tunnel

Abstract

The use of tests is required when moving into areas sparsely explored by theory as an important tool for its validation. Aeroelastic wind tunnel tests using scaled models can be performed in order to verify the analytical methods, requiring a model that represents the problem qualitatively or, in a more complex case, checking the behavior of a real aircraft, requiring a representative model in which tests must necessarily be done demonstrating, statically and dynamically, their fidelity to the real structure. In this work, using previously acquired wind tunnel tests experimental data, a modal identification routine has been developed to analyse the data. Using theoretical scaled aircraft models, a theoretical versus experiment correlation was performed in order to verify the quality of the theoretical results.

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