{"id":109,"date":"2012-09-11T21:42:49","date_gmt":"2012-09-11T20:42:49","guid":{"rendered":"http:\/\/eboreal.com\/devblog\/?p=109"},"modified":"2014-05-29T21:53:21","modified_gmt":"2014-05-29T20:53:21","slug":"calcul-du-vent-relatif-un-peu-de-trigonometrie","status":"publish","type":"post","link":"https:\/\/eboreal.com\/devblog\/calcul-du-vent-relatif-un-peu-de-trigonometrie\/","title":{"rendered":"Calcul du vent relatif &#8211; un peu de trigonom\u00e9trie"},"content":{"rendered":"<p>Quand le bateau se d\u00e9place, le vent apparent (ou relatif) est diff\u00e9rent du vent r\u00e9el. Cet effet est d&rsquo;autan plus sensible que le bateau va vite.<\/p>\n<p><a href=\"https:\/\/eboreal.com\/devblog\/wp-content\/uploads\/2012\/09\/vent_relatif.jpg\" data-rel=\"lightbox-gallery-ySxCN13H\" data-rl_title=\"\" data-rl_caption=\"\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-110\" title=\"\" src=\"https:\/\/eboreal.com\/devblog\/wp-content\/uploads\/2012\/09\/vent_relatif.jpg\" alt=\"\" width=\"1187\" height=\"1687\" srcset=\"https:\/\/eboreal.com\/devblog\/wp-content\/uploads\/2012\/09\/vent_relatif.jpg 1187w, https:\/\/eboreal.com\/devblog\/wp-content\/uploads\/2012\/09\/vent_relatif-211x300.jpg 211w, https:\/\/eboreal.com\/devblog\/wp-content\/uploads\/2012\/09\/vent_relatif-768x1092.jpg 768w, https:\/\/eboreal.com\/devblog\/wp-content\/uploads\/2012\/09\/vent_relatif-721x1024.jpg 721w, https:\/\/eboreal.com\/devblog\/wp-content\/uploads\/2012\/09\/vent_relatif-1080x1535.jpg 1080w\" sizes=\"(max-width: 1187px) 100vw, 1187px\" \/><\/a><\/p>\n<p>Du vent relatif (force et direction) on d\u00e9duit la vitesse du bateau en utilisant une fonction dont la courbe est traditionnellement repr\u00e9sent\u00e9e sous la forme d&rsquo;une polaire.<\/p>\n<p><em>Note :<\/em><\/p>\n<p>En fait traditionnellement\u00a0 les polaires sont donn\u00e9es en fonction de la vitesse et de l&rsquo;angle \u00ab\u00a0absolu\u00a0\u00bb du vent par rapport au bateau et non en fonction du vent relatif.<\/p>\n<p>Le vent relatif (celui indiqu\u00e9 par la girouette en au du mat) sera indiqu\u00e9 au joueur (vitesse et direction) le vent absolu est utilis\u00e9 par le programme pour calculer la vitesse du bateau.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quand le bateau se d\u00e9place, le vent apparent (ou relatif) est diff\u00e9rent du vent r\u00e9el. Cet effet est d&rsquo;autan plus sensible que le bateau va vite. Du vent relatif (force et direction) on d\u00e9duit la vitesse du bateau en utilisant une fonction dont la courbe est traditionnellement repr\u00e9sent\u00e9e sous la forme d&rsquo;une polaire. Note : [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":110,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[4,13],"tags":[],"class_list":["post-109","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-sail-boat-sim-race","et-has-post-format-content","et_post_format-et-post-format-standard"],"_links":{"self":[{"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/posts\/109","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/comments?post=109"}],"version-history":[{"count":7,"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/posts\/109\/revisions"}],"predecessor-version":[{"id":351,"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/posts\/109\/revisions\/351"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/media\/110"}],"wp:attachment":[{"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/media?parent=109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/categories?post=109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eboreal.com\/devblog\/wp-json\/wp\/v2\/tags?post=109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}