{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T10:12:31Z","timestamp":1760609551090,"version":"build-2065373602"},"reference-count":33,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2023,8,28]],"date-time":"2023-08-28T00:00:00Z","timestamp":1693180800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Axioms"],"abstract":"<jats:p>The objective of this article is to characterize an aeroelastic system in terms of its dynamical behavior, which could be either chaotic or periodic before, during, and after achieving the flutter velocity. The aeroelastic system shown here is a wing with a high aspect ratio, which leads to a very flexible behavior subjected to unsteady flow. This paper compares the computational and experimental dynamical behavior of an aeroelastic system at the flutter velocity for the different dynamic stall models proposed. To understand the nonlinear behavior of this system, the traditional attractor reconstruction and Lyapunov exponent calculation are compared with the 0\u20131 test. In addition to this comparison, two dynamic stall semi-empirical models are applied directly to the time history. All these comparisons show that the computational and wind tunnel experiments are in good agreement, and the dynamic behavior usually gives close results for the 0\u20131 test and Lyapunov exponent. It is concluded that the system presents chaotic behavior when no dynamic stall correction is applied or when Gangwani\u2019s correction is applied. However, Boeing\u2013Vertol\u2019s correction postpones the chaotic behavior, meaning that the chaotic behavior is only observed for velocities above the flutter.<\/jats:p>","DOI":"10.3390\/axioms12090826","type":"journal-article","created":{"date-parts":[[2023,8,28]],"date-time":"2023-08-28T06:57:35Z","timestamp":1693205855000},"page":"826","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Characterization of Aeroelastic Behavior in a High Aspect Ratio Wing Using Computational and Wind Tunnel Experiments"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9333-5835","authenticated-orcid":false,"given":"Michelle F.","family":"Westin","sequence":"first","affiliation":[{"name":"Aeronautics Institute of Technology (ITA), S\u00e3o Jos\u00e9 dos Campos 12228-900, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9796-3609","authenticated-orcid":false,"given":"Jose M.","family":"Balthazar","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering of Bauru (UNESP\/Bauru), State University of S\u00e3o Paulo, S\u00e3o Paulo 05508-090, Brazil"},{"name":"Department of Electrical Engineering, Federal University of Technology\u2014Paran\u00e1 (UTFPR\/Ponta Grossa), Ponta Grossa 84017-220, Brazil"}]},{"given":"Roberto G. A.","family":"da Silva","sequence":"additional","affiliation":[{"name":"Aeronautics Institute of Technology (ITA), S\u00e3o Jos\u00e9 dos Campos 12228-900, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7314-0723","authenticated-orcid":false,"given":"Mauricio A.","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Federal University of Technology\u2014Paran\u00e1 (UTFPR\/Ponta Grossa), Ponta Grossa 84017-220, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3144-0407","authenticated-orcid":false,"given":"Angelo M.","family":"Tusset","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Federal University of Technology\u2014Paran\u00e1 (UTFPR\/Ponta Grossa), Ponta Grossa 84017-220, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1016\/j.paerosci.2016.12.004","article-title":"A Review on Non-Linear Aeroelasticity of High Aspect-Ratio Wings","volume":"89","author":"Afonso","year":"2017","journal-title":"Prog. 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