{"id":5138,"date":"2018-11-30T15:07:49","date_gmt":"2018-11-30T14:07:49","guid":{"rendered":"http:\/\/www.iode-du-lac.org\/blog\/?p=5138"},"modified":"2018-12-01T14:43:48","modified_gmt":"2018-12-01T13:43:48","slug":"premier-vol-reussi-dun-prototype-davion-ionique-propre-silencieux-et-sans-moteurs","status":"publish","type":"post","link":"https:\/\/www.iode-du-lac.org\/blog\/2018\/11\/premier-vol-reussi-dun-prototype-davion-ionique-propre-silencieux-et-sans-moteurs\/","title":{"rendered":"Premier vol r\u00e9ussi d&rsquo;un prototype d&rsquo;avion ionique, propre, silencieux et sans moteurs"},"content":{"rendered":"<p><span style=\"color: black; font-family: 'Arial',sans-serif; font-size: 9.5pt;\"><img decoding=\"async\" class=\"size-medium wp-image-5178 alignleft\" src=\"https:\/\/www.iode-du-lac.org\/blog\/wp-content\/uploads\/2018\/11\/1174182-premier-vol-d-un-prototype-d-avion-a-propulsion-ionique-250x171.jpg\" alt=\"\" width=\"250\" height=\"171\" srcset=\"https:\/\/www.iode-du-lac.org\/blog\/wp-content\/uploads\/2018\/11\/1174182-premier-vol-d-un-prototype-d-avion-a-propulsion-ionique-250x171.jpg 250w, https:\/\/www.iode-du-lac.org\/blog\/wp-content\/uploads\/2018\/11\/1174182-premier-vol-d-un-prototype-d-avion-a-propulsion-ionique-768x526.jpg 768w, https:\/\/www.iode-du-lac.org\/blog\/wp-content\/uploads\/2018\/11\/1174182-premier-vol-d-un-prototype-d-avion-a-propulsion-ionique-680x466.jpg 680w, https:\/\/www.iode-du-lac.org\/blog\/wp-content\/uploads\/2018\/11\/1174182-premier-vol-d-un-prototype-d-avion-a-propulsion-ionique-125x86.jpg 125w, https:\/\/www.iode-du-lac.org\/blog\/wp-content\/uploads\/2018\/11\/1174182-premier-vol-d-un-prototype-d-avion-a-propulsion-ionique.jpg 960w\" sizes=\"(max-width: 250px) 100vw, 250px\" \/>Des scientifiques du Massachusetts Institute of Technology (MIT)\u00a0ont r\u00e9ussi \u00e0 faire voler un prototype d&rsquo;avion \u00ab\u00a0<em><span style=\"font-family: 'Arial',sans-serif;\">proof-of-concept\u00a0\u00bb<\/span><\/em>\u00a0sur plus de 50 m gr\u00e2ce \u00e0 un <em><span style=\"font-family: 'Arial',sans-serif;\">\u00ab\u00a0vent ionique\u00a0\u00bb<\/span><\/em>. Le petit engin, de 2,45 kg pour 5 m d&rsquo;envergure, s&rsquo;est d\u00e9plac\u00e9 de mani\u00e8re totalement silencieuse et non polluante \u00e0 la vitesse stationnaire de 5 m\/s. Les chercheurs n&rsquo;ont en effet pas\u00a0utilis\u00e9\u00a0d&rsquo;h\u00e9lices ni de moteurs, mais\u00a0une simple batterie \u00e9lectrique pour ioniser les atomes d&rsquo;air et provoquer une pouss\u00e9e a\u00e9rodynamique. <em><span style=\"font-family: 'Arial',sans-serif;\">\u00ab\u00a0M\u00eame si nous avons montr\u00e9 que la pouss\u00e9e \u00e9lectro-a\u00e9rodynamique \u00e9tait suffisante pour des vols sans \u00e9quipage \u00e0 faible vitesse, ce n&rsquo;est actuellement pas suffisant pour les vols \u00e0 haute vitesse de l &lsquo;aviation commerciale\u00a0\u00bb<\/span><\/em>, notent les auteurs de l&rsquo;\u00e9tude.\u00a0<em><span style=\"font-family: 'Arial',sans-serif;\">\u00ab\u00a0Notre a\u00e9ronef d\u00e9veloppe une pouss\u00e9e de 3 newtons par m\u00b2. Pour les avions commerciaux, ce chiffre est plut\u00f4t de l&rsquo;ordre de 1 000 newtons par m\u00b2\u00a0\u00bb.\u00a0\u00ab\u00a0De nombreux progr\u00e8s restent \u00e0 r\u00e9aliser\u00a0\u00bb<\/span><\/em>, reconnaissent les auteurs, qui notent que\u00a0plus l&rsquo;avion ira vite et plus l&rsquo;efficacit\u00e9 propulsive sera importante. Dans le futur, ils imaginent appliquer cette technologie \u00e0 des<em><span style=\"font-family: 'Arial',sans-serif;\">\u00a0\u00ab\u00a0drones urbains ultra silencieux\u00a0\u00bb<\/span><\/em>, ou encore \u00e0 des avions de type Solar Impulse.<\/span><\/p>\n<p>Source: <span style=\"color: #827c7e; font-family: 'Arial',sans-serif; font-size: 9pt;\">28 novembre 2018 &#8211; Le Monde &#8211; Sciencesetavenir.fr &#8211; Huffingtonpost.fr &#8211; Rfi.fr &#8211; Francetvinfo.fr &#8211; Usinenouvelle.com <\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Des scientifiques du Massachusetts Institute of Technology (MIT)\u00a0ont r\u00e9ussi \u00e0 faire voler un prototype d&rsquo;avion \u00ab\u00a0proof-of-concept\u00a0\u00bb\u00a0sur plus de 50 m gr\u00e2ce \u00e0 un \u00ab\u00a0vent ionique\u00a0\u00bb. Le petit engin, de 2,45 kg pour 5 m d&rsquo;envergure, s&rsquo;est d\u00e9plac\u00e9 de mani\u00e8re totalement silencieuse et non polluante \u00e0 la vitesse stationnaire de 5 m\/s. Les chercheurs n&rsquo;ont en effet pas\u00a0utilis\u00e9\u00a0d&rsquo;h\u00e9lices ni de moteurs, mais\u00a0une simple batterie \u00e9lectrique pour ioniser les atomes d&rsquo;air et provoquer une pouss\u00e9e a\u00e9rodynamique. \u00ab\u00a0M\u00eame si nous avons montr\u00e9 que la pouss\u00e9e \u00e9lectro-a\u00e9rodynamique \u00e9tait suffisante pour des vols sans \u00e9quipage \u00e0 faible vitesse, ce n&rsquo;est actuellement pas suffisant pour les vols \u00e0 haute vitesse de l &lsquo;aviation commerciale\u00a0\u00bb, notent les auteurs de l&rsquo;\u00e9tude.\u00a0\u00ab\u00a0Notre a\u00e9ronef d\u00e9veloppe une pouss\u00e9e de 3 newtons par m\u00b2. Pour les avions commerciaux, ce chiffre est plut\u00f4t de l&rsquo;ordre de 1 000 newtons par m\u00b2\u00a0\u00bb.\u00a0\u00ab\u00a0De nombreux progr\u00e8s restent \u00e0 r\u00e9aliser\u00a0\u00bb, reconnaissent les auteurs, qui notent que\u00a0plus l&rsquo;avion ira vite et plus l&rsquo;efficacit\u00e9 propulsive sera importante. Dans le futur, ils imaginent appliquer cette technologie \u00e0 des\u00a0\u00ab\u00a0drones urbains ultra silencieux\u00a0\u00bb, ou encore \u00e0 des avions de type Solar Impulse. Source: 28 novembre 2018 &#8211; Le Monde &#8211; Sciencesetavenir.fr &#8211; Huffingtonpost.fr &#8211; Rfi.fr &#8211; Francetvinfo.fr &#8211; Usinenouvelle.com &nbsp;<\/p>\n","protected":false},"author":35,"featured_media":5178,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[10],"tags":[],"class_list":["post-5138","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-transports"],"_links":{"self":[{"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/posts\/5138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/users\/35"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/comments?post=5138"}],"version-history":[{"count":3,"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/posts\/5138\/revisions"}],"predecessor-version":[{"id":5180,"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/posts\/5138\/revisions\/5180"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/media\/5178"}],"wp:attachment":[{"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/media?parent=5138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/categories?post=5138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iode-du-lac.org\/blog\/wp-json\/wp\/v2\/tags?post=5138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}