{"id":18764,"date":"2024-12-13T10:12:08","date_gmt":"2024-12-13T10:12:08","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=18764"},"modified":"2024-12-13T10:12:09","modified_gmt":"2024-12-13T10:12:09","slug":"flutter-mechanisms-characterization-using-distributed-aeroelastic-energy-analysis","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/12\/13\/flutter-mechanisms-characterization-using-distributed-aeroelastic-energy-analysis\/","title":{"rendered":"FLUTTER MECHANISMS CHARACTERIZATION USING DISTRIBUTED AEROELASTIC ENERGY ANALYSIS"},"content":{"rendered":"\n<p><strong>Cap. Yaara Karniel and Cap. Daniel Kariv, Maj. Michael Iovnovich<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2019-016<\/strong><\/p>\n\n\n\n<p>The problem of \ufb02utter mechanism classi\ufb01cation is important particularly for modern \ufb01ghter aircrafts, for which the amount of aircraft con\ufb01gurations which require analysis is typically large. Common \ufb02utter mechanism classi\ufb01cation and characterization techniques rely on characteristics which represent the structural motions at \ufb02utter conditions rather than a quantitative measure of the instability severity or its origins. Such classi\ufb01cations may be somewhat subjective, require tedious treatment by the analyst and may in some cases lead to wrong conclusions. The current study aims to enhance \ufb02utter mechanism characterization and classi\ufb01cation processes by using an aeroelastic energy balance analysis which is formulated in structural coordinates. The method may be easily applicable to typical industrial \ufb02utter analysis data and enables to identify distributed aeroelastic energy patterns which are visualized on the con\ufb01guration structural model. This analysis approach is shown to enable straightforward identi\ufb01cation of the structural parts which are the dominant contributors to the unstable coupling and thereby to distinguish between physically dissimilar \ufb02utter cases. The application of aeroelastic energy-based parameters for \ufb02utter mechanism classi\ufb01cation is presented in this study for a representative dataset including thousands of wing \ufb02utter cases of the F-16 aircraft with various stores. Using the suggested approach, six basic \ufb02utter mechanism groups are identi\ufb01ed in the examined dataset. Over 98% of the examined \ufb02utter cases may be automatically classi\ufb01ed to one of these mechanism groups, which demonstrates the potential of this approach.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/12\/IFASD-2019-016.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Cap. Yaara Karniel and Cap. Daniel Kariv, Maj. Michael Iovnovich<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: IFASD-2019-016<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2440,2433],"tags":[2817,2819,2273,2818],"class_list":["post-18764","post","type-post","status-publish","format-standard","hentry","category-computational-flutter","category-1-ifasd-2019","tag-distributed-aeroelastic-energy","tag-fighter-aircraft-utter","tag-flutter-analysis","tag-flutter-mechanism","category-2440","category-2433","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18764","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=18764"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18764\/revisions"}],"predecessor-version":[{"id":18766,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18764\/revisions\/18766"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=18764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=18764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=18764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}