{"id":5637,"date":"2025-06-30T12:14:32","date_gmt":"2025-06-30T11:14:32","guid":{"rendered":"https:\/\/staysafe.aero\/?p=5637"},"modified":"2025-06-30T13:04:40","modified_gmt":"2025-06-30T12:04:40","slug":"meteoschweiz-sommerwetter-density-altitude-beachten","status":"publish","type":"post","link":"https:\/\/staysafe.aero\/fr\/meteoschweiz-sommerwetter-density-altitude-beachten\/","title":{"rendered":"M\u00e9t\u00e9oSuisse : temps estival = attention \u00e0 l&#8217;altitude-densit\u00e9"},"content":{"rendered":"<p>Les changements m\u00e9t\u00e9orologiques rapides n\u00e9cessitent une attention accrue lors de la planification des vols. Parfois, les d\u00e9tails m\u00e9t\u00e9orologiques peuvent passer inaper\u00e7us. Le week-end dernier, la Suisse a connu ses premi\u00e8res journ\u00e9es chaudes de l&#8217;ann\u00e9e avec des temp\u00e9ratures sup\u00e9rieures \u00e0 30 degr\u00e9s Celsius. Cela rend le sujet de l&#8217;\u00ab altitude-densit\u00e9 \u00bb encore plus pertinent. Veuillez accorder une attention particuli\u00e8re \u00e0 cet aspect lors de la planification de vos vols par temps chaud.<\/p>\n<p>Par ailleurs, les temp\u00e9ratures \u00e9lev\u00e9es ont non seulement un impact significatif sur les performances des moteurs au d\u00e9collage ou en croisi\u00e8re, mais aussi sur les caract\u00e9ristiques de vol et de contr\u00f4le d&#8217;un avion lors de l&#8217;atterrissage.<\/p>\n<p><strong>Vitesse d&#8217;atterrissage plus \u00e9lev\u00e9e<\/strong><\/p>\n<ul>\n<li>En raison de la rar\u00e9faction de l&#8217;air, les ailes g\u00e9n\u00e8rent moins de portance \u00e0 une vitesse indiqu\u00e9e (IAS) donn\u00e9e.<\/li>\n<li>La vitesse r\u00e9elle (TAS) pour la m\u00eame IAS est plus \u00e9lev\u00e9e, ce qui entra\u00eene une augmentation de l&#8217;\u00e9nergie cin\u00e9tique au moment du toucher des roues \u2192 distance de freinage plus longue.<\/li>\n<\/ul>\n<p><strong>Distance d&#8217;atterrissage plus longue<\/strong><\/p>\n<ul>\n<li>La vitesse d&#8217;approche plus \u00e9lev\u00e9e et l&#8217;effet de freinage moindre de l&#8217;air signifient qu&#8217;un avion a besoin de plus de piste.<\/li>\n<li>Cela est particuli\u00e8rement critique sur les pistes courtes ou \u00e0 haute altitude (par exemple en montagne).<\/li>\n<\/ul>\n<p><strong>R\u00e9duction de l&#8217;efficacit\u00e9 des commandes<\/strong><\/p>\n<ul>\n<li>Les surfaces de contr\u00f4le (gouvernail, profondeur, ailerons) r\u00e9agissent lentement car la densit\u00e9 de l&#8217;air est plus faible.<\/li>\n<li>Un contr\u00f4le pr\u00e9cis lors de l&#8217;atterrissage peut s&#8217;av\u00e9rer difficile.<\/li>\n<\/ul>\n<p>Vous trouverez plus d&#8217;informations et de conseils dans les articles des ann\u00e9es pr\u00e9c\u00e9dentes :<\/p>\n<p><a href=\"https:\/\/staysafe.aero\/fr\/sommerzeit-grosse-hitze-kleine-leistung-und-richtige-flugtaktik\/\">L\u2019\u00e9t\u00e9 : grande chaleur, petite puissance et bonne tactique de vol<\/a><\/p>\n<p><a href=\"https:\/\/staysafe.aero\/fr\/summertime-high-density-altitude-time\/\">Summertime = High-Density-Altitude-Time<\/a><\/p>\n<p><a href=\"https:\/\/staysafe.aero\/fr\/fliegen-in-der-hitze-density-altitude-und-die-backside-of-the-power-curve\/\">Voler dans la chaleur : Density altitude et le \u201cbackside of the power curve\u201d \u2013 Stay Safe \u2013 Safety Promotion for General Aviation<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Les changements m\u00e9t\u00e9orologiques rapides n\u00e9cessitent une attention accrue lors de la planification des vols. Parfois, les d\u00e9tails m\u00e9t\u00e9orologiques peuvent passer [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":5638,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[488,489,492,497,499,504,506,1,13,446,486,487],"tags":[],"class_list":["post-5637","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ultraleicht-ecolight","category-helikopter","category-eigenbau","category-airmanship-become-a-better-pilot","category-weather","category-pilot-ich-bin","category-fluglehrerin","category-home-teaser","category-aktuell","category-flugplanung","category-motorflug","category-segelflug"],"_links":{"self":[{"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/posts\/5637","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/comments?post=5637"}],"version-history":[{"count":4,"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/posts\/5637\/revisions"}],"predecessor-version":[{"id":5642,"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/posts\/5637\/revisions\/5642"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/media\/5638"}],"wp:attachment":[{"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/media?parent=5637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/categories?post=5637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/staysafe.aero\/fr\/wp-json\/wp\/v2\/tags?post=5637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}