{"id":19124,"date":"2025-02-19T11:13:25","date_gmt":"2025-02-19T11:13:25","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=19124"},"modified":"2025-02-19T11:13:26","modified_gmt":"2025-02-19T11:13:26","slug":"experimental-bifurcation-analysis-of-a-wing-profile","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/02\/19\/experimental-bifurcation-analysis-of-a-wing-profile\/","title":{"rendered":"EXPERIMENTAL BIFURCATION ANALYSIS OF A WING PROFILE"},"content":{"rendered":"\n<p><strong>Irene Tartaruga, David Barton, Djamel Rezgui, Simon Neild<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2019-155<\/strong><\/p>\n\n\n\n<p>The prediction of \ufb02utter instabilities is very critical in aeroelstic wing design, as it limits the aircraft operational envelope. Aeroelastic structures that have nonlinear characteristics, as in highly \ufb02exible wings, can exhibit limit cycle oscillations in the vicinity of the \ufb02utter boundary. However, comprehensive characterization of these nonlinear oscillations can be challenging without a well established nonlinear mathematical or numerical model. In the present paper, control-based continuation (CBC) technique is used to characterize the nonlinear oscillatory dynamics of a physical aeroelastic system undergoing pre and post \ufb02utter oscillations, without the use of a mathematical model. The aeroelastic system was represented by a two-dimensional wing with pitch and heave degrees of freedom, tested in the low turbulence wind tunnel of the University of Bristol. The aim of this research is to demonstrate the capability of the CBC technique to trace unstable periodic behavior through stabilizing unstable limit cycle oscillations. The results allowed to produce a full bifurcation diagram for a \ufb02uttering wing pro\ufb01le, despite the noisy turbulent \ufb02ow environment of the wind tunnel.<\/p>\n\n\n\n<p><a href=\"https:\/\/research-information.bris.ac.uk\/ws\/portalfiles\/portal\/208378834\/IFASD_2019_155.pdf\">Read the full paper here<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Irene Tartaruga, David Barton, Djamel Rezgui, Simon Neild<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: IFASD-2019-155<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2445,2433],"tags":[3019,3018,975,2065,2377],"class_list":["post-19124","post","type-post","status-publish","format-standard","hentry","category-experimental-methods-in-structural-dynamics","category-1-ifasd-2019","tag-control-based-continuation","tag-experimental-bifurcation","tag-flutter","tag-lco","tag-limit-cycle-oscillation-2","category-2445","category-2433","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/comments?post=19124"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19124\/revisions"}],"predecessor-version":[{"id":19126,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19124\/revisions\/19126"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=19124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=19124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=19124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}