{"id":34923,"date":"2019-03-05T15:00:59","date_gmt":"2019-03-05T13:00:59","guid":{"rendered":"https:\/\/www.iemn.fr\/articles-temporaires\/these-du-micro-vehicule-aerien-au-nano-vehicule-aerien-etudes-theoriques-et-experimentales-sur-un-insecte-artificiel-a-ailes-battantes-2-2.html"},"modified":"2019-03-25T14:53:38","modified_gmt":"2019-03-25T12:53:38","slug":"these-du-micro-vehicule-aerien-au-nano-vehicule-aerien-etudes-theoriques-et-experimentales-sur-un-insecte-artificiel-a-ailes-battantes-2-2","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/actualites\/these-du-micro-vehicule-aerien-au-nano-vehicule-aerien-etudes-theoriques-et-experimentales-sur-un-insecte-artificiel-a-ailes-battantes-2-2.html","title":{"rendered":"Soutenance de th\u00e8se : Croissance et transfert de graph\u00e8ne e nitrure de bore hexagonal. Applications thermiques pour l\u2019\u00e9lectronique flexible"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_1qml4pghr36a\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-34923'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jsoo5jcl-5766b5266e43f3a2525c056a64390b80\">\n#top .av-special-heading.av-jsoo5jcl-5766b5266e43f3a2525c056a64390b80{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-jsoo5jcl-5766b5266e43f3a2525c056a64390b80 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-jsoo5jcl-5766b5266e43f3a2525c056a64390b80 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-jsoo5jcl-5766b5266e43f3a2525c056a64390b80 av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESE : Du micro v\u00e9hicule a\u00e9rien au nano v\u00e9hicule a\u00e9rien : \u00e9tudes th\u00e9oriques et exp\u00e9rimentales sur un insecte artificiel \u00e0 ailes battantes<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><blockquote>\n<h5><\/h5>\n<h5><strong><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-14684 alignleft\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_-80x80.png\" alt=\"\" width=\"80\" height=\"80\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_-80x80.png 80w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_-36x36.png 36w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_-180x180.png 180w\" sizes=\"auto, (max-width: 80px) 100vw, 80px\" \/><\/a><\/strong><\/h5>\n<h5>Thesis defence<\/h5>\n<h5><strong>Mr Doan LE ANH<\/strong><\/h5>\n<p><strong>Friday 1 March 2019 at 2.00 pm<br \/>\nA<\/strong>IEMN-DOAE amphitheatre on the UPHF Mont-Houy campus<\/p>\n<\/blockquote>\n<div  class='hr av-jxmfrz-3b69a62d25f384c49001ffcf3ec7d946 hr-default  avia-builder-el-4  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5><strong><span style=\"color: #800000;\">Jury:<\/span><\/strong><\/h5>\n<ul>\n<li><span class=\"\">Bruno ALLARD, University Professor<strong>,<\/strong> INSA de Lyon \/ Amp\u00e8re Laboratory, Lyon (Rapporteur), <\/span><\/li>\n<li><span class=\"\">Mr Ramiro GODOY-DIANA, CNRS HDR Research Fellow, ESPCI \/ PMMH, Paris (Rapporteur)<\/span><\/li>\n<li><span class=\"\">Mr Andr\u00e9 PREUMONT, University Professor, ULB \/ Active Structures Laboratory, Brussels (Examiner)<\/span><\/li>\n<li>Mrs Guylaine POULIN-VITTRANT, CNRS Research Fellow, INSA-CVL GREMAN, Blois (Examiner)<\/li>\n<li>\u00c9ric CATTAN, University Professor, UPHF \/ IEMN, Valenciennes <span class=\"\">(Thesis supervisor)<\/span><\/li>\n<li><span class=\"\">Mr S\u00e9bastien GRONDEL, University Professor, UPHF \/ IEMN, Valenciennes (Thesis supervisor)<\/span><\/li>\n<li>Mr Olivier Thomas, University Professor, ENSAM\/ LSIS, Lille (Guest)<\/li>\n<\/ul>\n<h5><span class=\"\">Summary:<\/span><\/h5>\n<p>Over the last few decades, the possibility of exploiting the exceptional flight capabilities of insects has prompted a great deal of research into the development of flapping-wing nano-aerial vehicles (NAVs). However, when designing such prototypes, researchers have to analyse a vast range of solutions linked to the wide diversity of flying insects to identify the functionalities and parameters best suited to their needs. In order to alleviate this task, the aim of this work is to develop a tool for examining both the kinematic and energetic behaviour of a nano-air vehicle with flexible resonant wings, and thus to assess its effectiveness.<\/p>\n<p>However, this objective remains extremely difficult to achieve because it concerns very small objects. For this reason, we have chosen first to work on a micro air vehicle (MAV) with flapping wings. The main aim is to validate the modelling tool by systematically comparing the simulations with the experimental results obtained during the actuation of the wings, then during the prototype's take-off and hovering flight. Some of the knowledge and experience acquired can then be used to gain a better understanding of the operation and identify the energy distribution within the NAV.<\/p>\n<p>Although the two vehicles are directly inspired by the kinematics of insect wings, the mechanisms for actuating the artificial wings of the two prototypes are not the same because of the difference in size. Because the NAV is smaller, these wings flap at a higher frequency than those of the MAV, as is the case in nature. As a result, when moving from the MAV to the NAV, the wing actuation mechanism needs to be adapted, and this difference requires a rethink of the design, modelling approach and optimisation process, as well as changes to the manufacturing process. Once these improvements had been made, we obtained simulation results in line with the experimental tests.<\/p>\n<p>The main result of this work is that the two prototypes, the MAV and the NAV, have appropriate kinematics for the wings, resulting in a lift force equivalent to the weight. We have also demonstrated that the MAV is capable of taking off and hovering in a stable manner along the vertical axis. By taking advantage of models based on the Bond Graph language, it is also possible to assess the energy performance of these prototypes as a function of the wing's dynamics. In conclusion, this study contributes to the definition of the essential parameters to be taken into account in the design and energy optimisation of flapping-wing micro- and nano-vehicles.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":34924,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,199],"tags":[],"class_list":["post-34923","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-these"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/34923","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=34923"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/34923\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/34924"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=34923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=34923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=34923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}