{"id":4971,"date":"2025-06-04T16:13:16","date_gmt":"2025-06-04T14:13:16","guid":{"rendered":"https:\/\/academiespatiale.fr\/?p=4971"},"modified":"2025-12-19T18:28:28","modified_gmt":"2025-12-19T17:28:28","slug":"video-annonce-lacher-de-ballon-stratospherique-annonce-du-challenge-ballon-2026","status":"publish","type":"post","link":"https:\/\/academiespatiale.fr\/index.php\/2025\/06\/04\/video-annonce-lacher-de-ballon-stratospherique-annonce-du-challenge-ballon-2026\/","title":{"rendered":"[VIDEO &amp; ANNONCE] L\u00e2cher de ballon stratosph\u00e9rique &amp; annonce du challenge ballon 2026"},"content":{"rendered":"\n<div class=\"wp-block-columns has-text-color has-link-color wp-elements-1cf89f6393c8f212f3e79f53ff7e96d9 is-layout-flex wp-container-core-columns-is-layout-e09de6c1 wp-block-columns-is-layout-flex\" style=\"color:#b1b1b1;margin-top:-25px;margin-bottom:20px;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0;font-size:15px\">\n<div class=\"wp-block-column has-text-color has-link-color wp-elements-977c92ac7ace40d5b046b781b030ee10 is-layout-flow wp-block-column-is-layout-flow\" style=\"color:#a1a1a1;padding-top:0;padding-bottom:0;font-size:15px;font-style:normal;font-weight:100;flex-basis:100%\"><div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/academiespatiale.fr\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/academiespatiale.fr\/index.php\/category\/formation\/\" title=\"Formation\">Formation<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t[VIDEO &amp; ANNONCE] L\u00e2cher de ballon stratosph\u00e9rique &amp; annonce du challenge ballon 2026\n\t\t<\/span><\/div><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Dans le cadre du projet Europ\u00e9en <a href=\"https:\/\/becom-project.eu\" target=\"_blank\" rel=\"noopener\" title=\"\">BECOM<\/a> (Better Contrail Mitigation), un ballon m\u00e9t\u00e9orologique, avec plusieurs sondes m\u00e9t\u00e9o \u00e0 bord, a \u00e9t\u00e9 lach\u00e9 depuis le SIRTA le mercredi 28 mai dernier.<\/strong> <strong>Ce projet a mobilis\u00e9 le staff de l&rsquo;observatoire de recherche atmosph\u00e9rique SIRTA (situ\u00e9 sur le campus de l&rsquo;\u00c9cole Polytechnique), la soci\u00e9t\u00e9 M\u00e9t\u00e9oModem ainsi que l&rsquo;\u00e9quipe scientifique BeCoM du LATMOS. <\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les ballons envoy\u00e9s durant cette campagne visent \u00e0 mieux compendre le r\u00f4le de la vapeur d&rsquo;eau dans la haute troposph\u00e8re et notre capacit\u00e9 \u00e0 mesurer cette grandeur.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"2160\" style=\"aspect-ratio: 3840 \/ 2160;\" width=\"3840\" controls src=\"https:\/\/academiespatiale.fr\/wp-content\/uploads\/2025\/06\/20250528_ballonstrato_SIRTA-IPP_G.Katchourine.mp4\"><\/video><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">Le ballon de 1200 litres a emport\u00e9 trois sondes, moins de 1kg au total, des constructeurs VAISALA et M\u00e9t\u00e9o Modem \u00e0 environ 30 km d&rsquo;altitude. Les conditions \u00e0 cette altitude permettent d&rsquo;avoir une bonne simulation de l&rsquo;environnement spatial et donc de tester du mat\u00e9riel spatial \u00e0 moins co\u00fbt :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Temp\u00e9rature : jusqu&rsquo;\u00e0 -70\u00b0C \u00e0 la tropopause<\/li>\n\n\n\n<li>Pression divis\u00e9e par 100 (de ~1000 hPa \u00e0 ~10 hPa)<\/li>\n\n\n\n<li>Humidit\u00e9 faible<\/li>\n\n\n\n<li>Radiation UV plus importante<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Le vol a dur\u00e9 environ 1h30, avec une mont\u00e9e rapide \u00e0 5 m\/s et des donn\u00e9es r\u00e9ceptionn\u00e9es en temps r\u00e9el, via une \u00e9mission radio UHF de 400 Mhz, aussi bien \u00e0 l\u2019ascension qu\u2019\u00e0 la redescente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/becom-project.eu\" target=\"_blank\" rel=\" noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"68\" src=\"https:\/\/academiespatiale.fr\/wp-content\/uploads\/2025\/06\/BECOM-300x68.png\" alt=\"\" class=\"wp-image-5037\" style=\"width:212px;height:auto\" srcset=\"https:\/\/academiespatiale.fr\/wp-content\/uploads\/2025\/06\/BECOM-300x68.png 300w, https:\/\/academiespatiale.fr\/wp-content\/uploads\/2025\/06\/BECOM-768x173.png 768w, https:\/\/academiespatiale.fr\/wp-content\/uploads\/2025\/06\/BECOM.png 833w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<p class=\"has-background-color-background-color has-background wp-block-paragraph\" style=\"font-size:15px\"><strong>ANNONCE<\/strong><br><strong>Challenge ballon 2026<br><\/strong>&#8211; <em>\u00e0 destination des lyc\u00e9es (notamment pro) et des IUTs<\/em><br><em>&#8211; \u00e0 partir de la rentr\u00e9e 2025\/2026 pour un vol ballon en juin ou juillet 2026<br><\/em><br>Le lancement BECOM illustr\u00e9 ici sert \u00e9galement de test pour le futur \u00ab&nbsp;Challenge \u00c9tudiant Ballon 2026&nbsp;\u00bb, une initiative permettant aux \u00e9l\u00e8ves et \u00e9tudiant\u00b7es de concevoir des exp\u00e9riences scientifiques en haute altitude.<br><br>\u2192 Plus d&rsquo;infos \u00e0 venir<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a5989f8269dc&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a5989f8269dc\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" data-wp-class--hide=\"state.isContentHidden\" 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