{"id":18523,"date":"2024-11-19T12:54:12","date_gmt":"2024-11-19T12:54:12","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=18523"},"modified":"2024-11-19T12:54:12","modified_gmt":"2024-11-19T12:54:12","slug":"alternative-problem-formulations-for-identification-of-mathematical-model-of-helicopter-rotor-blade-and-some-problems-of-aeroelasticity-analysis","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/11\/19\/alternative-problem-formulations-for-identification-of-mathematical-model-of-helicopter-rotor-blade-and-some-problems-of-aeroelasticity-analysis\/","title":{"rendered":"ALTERNATIVE PROBLEM FORMULATIONS FOR IDENTIFICATION OF MATHEMATICAL MODEL OF HELICOPTER ROTOR BLADE AND SOME PROBLEMS OF AEROELASTICITY ANALYSIS"},"content":{"rendered":"\n<p><strong>Vadim Yu.Eremin, Sergei E.Paryshev<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2015-105<\/strong><\/p>\n\n\n\n<p>The task to provide multi-disciplinary engineering analysis of helicopter rotor blade is stated, as the most vital, in authors\u201f opinion, to provide efficiency of the design process, where it is just the efficiency rather than deep insight into any of the discipline that has to be preferred. Two contributing problems are considered within this task formulation: A combined analytical\/experimental method to get Campbell\u201fs diagram for a helicopter blade has been developed. The method is based on experimental measurement of elastic compliance matrix of the blade at zero rotation speed. Results for actual blades are presented. The vital demand of the task of blade characteristics identification goes from the fact that to get Campbell\u201fs diagram and vibration mode shapes of a rotating blade from appropriate dynamic response processing is rather a complicated problem; also any hardware to excite the blade under rotation may affect properties of the mechanical system and thus deteriorate the results. A problem of computational analysis of blade motion within the rotor is formulated, for which dynamic condensation approach is NOT used. For aerodynamic analysis, a discrete singularities method is used that makes it possible to calculate chord-wise aerodynamic forces exactly. Also under discussion is the use of undeservedly forgotten abstract concepts like \u201csuction force\u201d and \u201cchordwise variable inductive wash\u201d closely associated with the theory of thin lifting surface.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/11\/IFASD-2015-105.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Vadim Yu.Eremin, Sergei E.Paryshev<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: IFASD-2015-105<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2413,2431],"tags":[2641,2645,2642,2644,2646,2643,2640,2647],"class_list":["post-18523","post","type-post","status-publish","format-standard","hentry","category-1-ifasd-2015","category-rotation-system","tag-aerodynamic-analysis","tag-aerodynamic-singularities","tag-blade","tag-campbells-diagramm","tag-design-process-flutter","tag-elastic-modes","tag-helicopter-aeroelasticity","tag-rotor","category-2413","category-2431","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18523","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=18523"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18523\/revisions"}],"predecessor-version":[{"id":18525,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18523\/revisions\/18525"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=18523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=18523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=18523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}