{"id":416272,"date":"2023-03-13T19:21:58","date_gmt":"2023-03-13T18:21:58","guid":{"rendered":"https:\/\/www.eenewseurope.com\/?p=416272"},"modified":"2023-03-13T19:21:58","modified_gmt":"2023-03-13T18:21:58","slug":"demonstration-de-plateformes-stratospheriques","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/demonstration-de-plateformes-stratospheriques\/","title":{"rendered":"D\u00e9monstration de plateformes stratosph\u00e9riques"},"content":{"rendered":"<h3><span style=\"font-size: 16px;\">Thales Alenia Space signe un contrat avec la commission europ\u00e9enne pour d\u00e9marrer un projet de plateformes stratosph\u00e9riques<\/span><\/h3>\n<p>Thales Alenia Space, a annonc\u00e9 avoir sign\u00e9 un contrat de 43 M\u20ac portant sur le projet EuroHAPS (D\u00e9monstration de syst\u00e8mes de plateforme \u00e0 haute altitude). Ce projet avait \u00e9t\u00e9 s\u00e9lectionn\u00e9 par la Commission Europ\u00e9enne le 20 juillet 2022 en tant que projet collaboratif de recherche et de d\u00e9veloppement dans le domaine de la d\u00e9fense au titre du Fonds europ\u00e9en de la d\u00e9fense (FED).<\/p>\n<p><strong>Trois types de plateformes<\/strong><\/p>\n<p>Thales Alenia Space coordonne un consortium europ\u00e9en impliquant 21 partenaires, et 18 sous-traitants, de 11 pays. L\u2019objectif est de d\u00e9velopper plusieurs d\u00e9monstrateurs stratosph\u00e9riques d\u00e9di\u00e9s \u00e0 diff\u00e9rentes missions et visant \u00e0 am\u00e9liorer les capacit\u00e9s de renseignement, de surveillance et de reconnaissance ISR et de t\u00e9l\u00e9communications.\u00a0 CIRA, Elettronica et Leonardo en Italie, ONERA et CEA en France, INTA en Espagne et ESG avec TAO en Allemagne, sont partenaires principaux, pour la r\u00e9alisation des d\u00e9monstrations en vol les capacit\u00e9s de trois types de plateformes stratosph\u00e9riques compl\u00e9mentaires :<\/p>\n<ul>\n<li>le Stratobus \u00e9chelle r\u00e9duite de Thales Alenia Space est un dirigeable propuls\u00e9 \u00e0 l\u2019\u00e9nergie solaire assurant des missions de longue dur\u00e9e et avec une forte capacit\u00e9 d\u2019emport de charge utile ;<\/li>\n<li>le HHAA (Hybrid High Altitude Airship) de CIRA (tactical HAPS) est un dirigeable hybride dont la portance est aussi cr\u00e9e par un profil d\u2019aile ;<\/li>\n<li>l&rsquo;ASBaS (Autonomous Stratospheric Balloon System) d\u2019ESG et de TAO est compos\u00e9 de 3 ballons en s\u00e9rie, contr\u00f4lables en altitude.<\/li>\n<\/ul>\n<p>Ces trois types de plateformes sont compl\u00e9mentaires, avec des dur\u00e9es d\u2019op\u00e9ration, des capacit\u00e9s et des contraintes op\u00e9rationnelles tr\u00e8s diff\u00e9rentes. Ainsi, l\u2019Europe disposera d\u2019un spectre de solutions couvrant de nombreux besoins.<\/p>\n<p>Un ensemble de missions sera test\u00e9 sous ces diff\u00e9rentes plateformes, telles que l\u2019observation par lidar pour d\u00e9tecter et classifier des cibles maritimes ou terrestres, avec, pour ces derni\u00e8res, la possibilit\u00e9 de d\u00e9tection dans des environnements partiellement couverts par de la v\u00e9g\u00e9tation. D\u2019autres missions seront test\u00e9es comme la d\u00e9tection et la localisation de moyens de communications\u00a0 ainsi qu\u2019un r\u00e9seau maill\u00e9 de t\u00e9l\u00e9communications haut d\u00e9bit destin\u00e9es \u00e0 connecter diff\u00e9rents acteurs du milieu A\u00e9roterrestre.<\/p>\n<p>Les HAPS repr\u00e9sentent une opportunit\u00e9 nouvelle pour compl\u00e9ter les moyens terrestres, satellitaires ou a\u00e9roport\u00e9s en apportant des capacit\u00e9s uniques pour r\u00e9pondre aux enjeux op\u00e9rationnels. La stratosph\u00e8re est un nouveau milieu, peu utilis\u00e9 jusqu\u2019\u00e0 pr\u00e9sent, et qui permet des missions de tr\u00e8s longues dur\u00e9e (jusqu\u2019\u00e0 un an) et \u00e0 des distances relativement proches de la surface (environ 20km) ce qui leur permet d\u2019offrir d\u2019excellentes r\u00e9solutions aux missions d\u2019observation, ou encore d\u2019excellents bilans de liaison aux missions de t\u00e9l\u00e9communications.<\/p>\n<h4><strong>A propos de Stratobus<\/strong><\/h4>\n<p>Le Stratobus est un dirigeable stratosph\u00e9rique de type \u00ab blimp \u00bb, constitu\u00e9 d\u2019une enveloppe souple, maintenue en forme par de l\u2019h\u00e9lium en surpression par rapport \u00e0 l\u2019air ambiant, et d\u2019un syst\u00e8me de propulsion \u00e9lectrique enti\u00e8rement autonome. Les optimisations du concept ont conduit \u00e0 retenir un syst\u00e8me d\u2019environ 140m de long, une propulsion par 4 moteurs \u00e9lectriques, plus de 1000 m\u00b2 de cellules solaires, et une \u00e9volution entre 18 et 20km d\u2019altitude. L\u2019objectif d\u2019emport est une charge utile de 250 kg et de puissance 5 kW. Un grand nombre de verrous technologiques a \u00e9t\u00e9 lev\u00e9 pendant toute la phase de d\u00e9veloppement, avec notamment des mont\u00e9es en maturit\u00e9 de l\u2019enveloppe externe, du g\u00e9n\u00e9rateur solaire souple, de la technologie de d\u00e9chirure de l\u2019enveloppe permettant de g\u00e9rer les contraintes de sauvegarde, du syst\u00e8me propulsif \u00e0 haut rendement.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thales Alenia Space signe un contrat avec la commission europ\u00e9enne pour d\u00e9marrer un projet de plateformes stratosph\u00e9riques Thales Alenia Space, a annonc\u00e9 avoir sign\u00e9 un contrat de 43 M\u20ac portant sur le projet EuroHAPS (D\u00e9monstration de syst\u00e8mes de plateforme \u00e0 haute altitude). Ce projet avait \u00e9t\u00e9 s\u00e9lectionn\u00e9 par la Commission Europ\u00e9enne le 20 juillet 2022 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":416275,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[886],"tags":[3035,3036],"domains":[47],"ppma_author":[1143],"class_list":["post-416272","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-fr","tag-plateformes-stratospheriques","tag-stratobus","domains-electronique-eci"],"acf":[],"yoast_head":"<title>D\u00e9monstration de plateformes stratosph\u00e9riques ...<\/title>\n<meta name=\"description\" content=\"Le Stratobus est un dirigeable stratosph\u00e9rique constitu\u00e9 d\u2019une enveloppe souple, maintenue en forme par de l\u2019h\u00e9lium en surpression\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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