{"id":1877,"date":"2025-08-14T10:29:46","date_gmt":"2025-08-14T08:29:46","guid":{"rendered":"https:\/\/acriv.org\/WP\/?page_id=1877"},"modified":"2025-08-14T10:29:46","modified_gmt":"2025-08-14T08:29:46","slug":"%e2%9a%99%ef%b8%8fanemometre-badin","status":"publish","type":"page","link":"https:\/\/acriv.org\/WP\/%e2%9a%99%ef%b8%8fanemometre-badin\/","title":{"rendered":"\u2699\ufe0fANEMOMETRE (BADIN)"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"229\" height=\"220\" src=\"https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-46.png\" alt=\"\" class=\"wp-image-1878\" style=\"width:224px;height:auto\" srcset=\"https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-46.png 229w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-46-109x105.png 109w\" sizes=\"auto, (max-width: 229px) 100vw, 229px\" \/><\/figure>\n<\/div>\n\n\n<p>Un <strong>an\u00e9mom\u00e8tre<\/strong> en aviation \u2014 aussi appel\u00e9 <strong>Badin<\/strong> en France (du nom de l\u2019ing\u00e9nieur Raoul Badin) \u2014 est l\u2019instrument qui mesure la <strong>vitesse de l\u2019avion par rapport \u00e0 l\u2019air<\/strong> (<em>vitesse indiqu\u00e9e<\/em>, ou IAS pour <em>Indicated Airspeed<\/em>).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. <strong>Principe de fonctionnement<\/strong><\/h2>\n\n\n\n<p>Le Badin fonctionne sur le principe de la <strong>pression dynamique<\/strong> :<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Prise de Pitot<\/strong> (tube pointant vers l\u2019avant) :\n<ul class=\"wp-block-list\">\n<li>Capte la <strong>pression totale<\/strong> (<em>pression dynamique + pression statique<\/em>).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Prise(s) statique(s)<\/strong> :\n<ul class=\"wp-block-list\">\n<li>Capte uniquement la <strong>pression statique<\/strong> de l\u2019air ambiant.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Mesure de la diff\u00e9rence<\/strong> :\n<ul class=\"wp-block-list\">\n<li>L\u2019instrument fait la soustraction : Pression\u00a0dynamique=Pression\u00a0totale\u2212Pression\u00a0statique\\text{Pression dynamique} = \\text{Pression totale} &#8211; \\text{Pression statique}Pression\u00a0dynamique=Pression\u00a0totale\u2212Pression\u00a0statique<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Cette pression dynamique est proportionnelle au <strong>carr\u00e9 de la vitesse<\/strong> de l\u2019avion par rapport \u00e0 l\u2019air.<br>Un m\u00e9canisme interne (souvent un bo\u00eetier \u00e0 capsule d\u00e9formable reli\u00e9 \u00e0 des engrenages) traduit cette pression en affichage de vitesse.<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"612\" height=\"456\" src=\"https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-48.png\" alt=\"\" class=\"wp-image-1881\" style=\"width:212px;height:auto\" srcset=\"https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-48.png 612w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-48-300x224.png 300w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-48-403x300.png 403w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-48-310x231.png 310w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-48-141x105.png 141w\" sizes=\"auto, (max-width: 612px) 100vw, 612px\" \/><figcaption class=\"wp-element-caption\">TUBE PITOT<\/figcaption><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"336\" height=\"150\" src=\"https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-49.png\" alt=\"\" class=\"wp-image-1882\" style=\"width:311px;height:auto\" srcset=\"https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-49.png 336w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-49-300x134.png 300w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-49-310x138.png 310w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/image-49-150x67.png 150w\" sizes=\"auto, (max-width: 336px) 100vw, 336px\" \/><\/figure>\n<\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. <strong>Ce que le Badin mesure vraiment<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u2019an\u00e9mom\u00e8tre donne la <strong>vitesse indiqu\u00e9e<\/strong> (<em>Indicated Airspeed<\/em>).<\/li>\n\n\n\n<li>Il ne mesure pas la vitesse r\u00e9elle par rapport au sol (Ground Speed), ni ne corrige automatiquement les effets d\u2019altitude, temp\u00e9rature ou compressibilit\u00e9.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. <strong>Vitesses et couleurs de r\u00e9f\u00e9rence sur le cadran<\/strong><\/h2>\n\n\n\n<p>Le cadran du Badin est cod\u00e9 en zones color\u00e9es pour une lecture rapide. Les valeurs exactes d\u00e9pendent du type d\u2019avion, mais les codes sont standardis\u00e9s :<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Couleur<\/th><th>Signification<\/th><th>Exemple (avion l\u00e9ger type Cessna 172)<\/th><\/tr><\/thead><tbody><tr><td><strong>Arc blanc<\/strong><\/td><td>Plage de vitesses utilisables avec volets sortis.<\/td><td>~40 \u00e0 85 kt<\/td><\/tr><tr><td><strong>Arc vert<\/strong><\/td><td>Plage de croisi\u00e8re normale (volets rentr\u00e9s).<\/td><td>~50 \u00e0 129 kt<\/td><\/tr><tr><td><strong>Arc jaune<\/strong><\/td><td>Vitesse \u00e0 utiliser seulement en air calme (proche des limites structurales).<\/td><td>~129 \u00e0 163 kt<\/td><\/tr><tr><td><strong>Trait rouge<\/strong><\/td><td>Vitesse maximale \u00e0 ne jamais d\u00e9passer (<em>Vne<\/em>).<\/td><td>163 kt<\/td><\/tr><tr><td><strong>Trait blanc bas<\/strong><\/td><td>Vitesse de d\u00e9crochage volets sortis (<em>Vs0<\/em>).<\/td><td>~40 kt<\/td><\/tr><tr><td><strong>Trait vert bas<\/strong><\/td><td>Vitesse de d\u00e9crochage volets rentr\u00e9s (<em>Vs1<\/em>).<\/td><td>~50 kt<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. <strong>En r\u00e9sum\u00e9 visuel<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Blanc<\/strong> = volets possibles<\/li>\n\n\n\n<li><strong>Vert<\/strong> = zone normale<\/li>\n\n\n\n<li><strong>Jaune<\/strong> = prudence<\/li>\n\n\n\n<li><strong>Rouge<\/strong> = danger, ne jamais d\u00e9passer<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Un an\u00e9mom\u00e8tre en aviation \u2014 aussi appel\u00e9 Badin en France (du nom de l\u2019ing\u00e9nieur Raoul Badin) \u2014 est l\u2019instrument qui mesure la vitesse de l\u2019avion par rapport \u00e0 l\u2019air (vitesse indiqu\u00e9e, ou IAS pour Indicated Airspeed). 1. Principe de fonctionnement Le Badin fonctionne sur le principe de la pression dynamique : 2. Ce que le Badin mesure vraiment 3. Vitesses<\/p>\n<p><a class=\"more-link\" href=\"https:\/\/acriv.org\/WP\/%e2%9a%99%ef%b8%8fanemometre-badin\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1877","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/pages\/1877","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/comments?post=1877"}],"version-history":[{"count":1,"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/pages\/1877\/revisions"}],"predecessor-version":[{"id":1883,"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/pages\/1877\/revisions\/1883"}],"wp:attachment":[{"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/media?parent=1877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}