{"id":18121,"date":"2024-08-22T09:08:29","date_gmt":"2024-08-22T09:08:29","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=18121"},"modified":"2024-08-22T09:08:30","modified_gmt":"2024-08-22T09:08:30","slug":"application-of-low-order-wake-inflow-models-to-rotorcraft-aeromechanics","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/08\/22\/application-of-low-order-wake-inflow-models-to-rotorcraft-aeromechanics\/","title":{"rendered":"APPLICATION OF LOW-ORDER WAKE INFLOW MODELS TO ROTORCRAFT AEROMECHANICS"},"content":{"rendered":"\n<p><strong>J. Serafini, F. Cardito, G. Bernardini, M. Gennaretti<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p>C<strong>onference number: IFASD-2017-179<\/strong><\/p>\n\n\n\n<p>The effect of dynamic in\ufb02ow modeling on helicopter aeromechanic simulation for stability, response and control purposes is investigated. Two different linear time-invariant in-\ufb02ow models, extracted from high-\ufb01delity aerodynamic simulations, are presented and applied. One provides the wake in\ufb02ow as a function of rotor kinematic variables, while the second one gives the wake in\ufb02ow dynamics forced by rotor loads. In both cases, \ufb01rst the involved transfer functions are identi\ufb01ed through time-marching aerodynamic simulations, and then a rational-matrix formula is applied for their \ufb01nite-state approximation. The resulting state-space dynamic in\ufb02ow models are applied to helicopter response and stability analyses, showing that the aeromechanic transfer functions and poles predicted by kinematic-based and loads-based models are somewhat different, with those related to the loads-based in\ufb02ow depending on the kinematic perturbation considered to synthesize the model. Both simulations present discrepancies with respect to those obtained by the widely-used Pitt-Peters dynamic in\ufb02ow model.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/08\/IFASD-2017-179.pdf\">Read the full paper here<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>J. Serafini, F. Cardito, G. Bernardini, M. Gennaretti<b\/><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: IFASD-2017-179<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1953,1962],"tags":[2304,2305,2256],"class_list":["post-18121","post","type-post","status-publish","format-standard","hentry","category-events","category-ifasd-2017","category-reduced-order-modeling","tag-dynamic-wake-inow","tag-helicopter-ight-dynamics","tag-reduced-order-modeling-2","category-993","category-1953","category-1962","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18121","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=18121"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18121\/revisions"}],"predecessor-version":[{"id":18123,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18121\/revisions\/18123"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=18121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=18121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=18121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}