{"id":8596,"date":"2014-03-11T17:18:18","date_gmt":"2014-03-11T16:18:18","guid":{"rendered":"https:\/\/preprod-cna.lpo.fr\/?p=8596"},"modified":"2014-03-11T17:18:18","modified_gmt":"2014-03-11T16:18:18","slug":"vitesse-en-piqu-tudi-e-par-une-quipe-de-chercheurs","status":"publish","type":"post","link":"https:\/\/preprod-cna.lpo.fr\/?p=8596","title":{"rendered":"Vitesse en piqu\u00e9 \u00e9tudi\u00e9e par une \u00e9quipe de chercheurs"},"content":{"rendered":"<p>Il s\u2019agit d\u2019une <a href=\"http:\/\/www.dailymail.co.uk\/sciencetech\/article-2572799\/The-physics-FALCONS-Scientists-unravel-exactly-peregrine-fastest-moving-creature-planet.html\">\u00e9tude<\/a> r\u00e9alis\u00e9e par des chercheurs de l\u2019universit\u00e9 allemande Freiberg de Bonn et Giessen.<\/p>\n<p>Les chercheurs ont utilis\u00e9 des p\u00e8lerins dress\u00e9s \u00e0 piquer \u00e0 partir d\u2019un barrage de 60 m de haut, ce qui pr\u00e9sentait l\u2019avantage de conna\u00eetre la trajectoire pr\u00e9cise et d\u2019y disposer des cam\u00e9ras sur le trajet.<\/p>\n<p>Ils ont pu constater &#8211; ce qu\u2019on savait de longue date &#8211; que la forme en V de l\u2019oiseau \u00e9tait particuli\u00e8rement a\u00e9rodynamique et que de petites plumes et duvet ressortaient du plumage de couverture au niveau des \u00ab coudes \u00bb, ce qui selon eux am\u00e9liorerait l\u2019a\u00e9rodynamique en facilitant l\u2019\u00e9coulement de l\u2019air autour de la forme.<br \/>\nCette \u00e9tude de \u00ab terrain ma\u00eetris\u00e9 \u00bb a \u00e9t\u00e9 compl\u00e9t\u00e9e d\u2019une \u00e9tude en soufflerie \u00e0 partir d\u2019une forme en plastique reconstitu\u00e9e.<br \/>\n<em>Source :&nbsp;Ren\u00e9-Jean&nbsp;Monneret<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Il s\u2019agit d\u2019une \u00e9tude r\u00e9alis\u00e9e par des chercheurs de l\u2019universit\u00e9 allemande Freiberg de Bonn et Giessen. Les chercheurs ont utilis\u00e9 des p\u00e8lerins dress\u00e9s \u00e0 piquer \u00e0 partir d\u2019un barrage de 60 m de haut, ce qui pr\u00e9sentait l\u2019avantage de conna\u00eetre la trajectoire pr\u00e9cise et d\u2019y disposer des cam\u00e9ras sur le trajet. Ils ont pu constater [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8596","post","type-post","status-publish","format-standard","hentry","category-autres-informations"],"_links":{"self":[{"href":"https:\/\/preprod-cna.lpo.fr\/index.php?rest_route=\/wp\/v2\/posts\/8596","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/preprod-cna.lpo.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/preprod-cna.lpo.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/preprod-cna.lpo.fr\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/preprod-cna.lpo.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8596"}],"version-history":[{"count":0,"href":"https:\/\/preprod-cna.lpo.fr\/index.php?rest_route=\/wp\/v2\/posts\/8596\/revisions"}],"wp:attachment":[{"href":"https:\/\/preprod-cna.lpo.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8596"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/preprod-cna.lpo.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8596"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/preprod-cna.lpo.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8596"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}