{"id":772,"date":"2011-10-26T11:20:00","date_gmt":"2011-10-26T09:20:00","guid":{"rendered":"https:\/\/kids.esa.int\/liftoff_for_galileo_constellation\/"},"modified":"2026-10-08T00:32:05","modified_gmt":"2026-10-07T22:32:05","slug":"liftoff_for_galileo_constellation","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/liftoff_for_galileo_constellation\/","title":{"rendered":"D\u00e9collage pour la constellation Galil\u00e9o"},"content":{"rendered":"
\n

Une nouvelle \u00e8re s'est ouverte le 21 octobre avec le lancement r\u00e9ussi des deux premiers satellites op\u00e9rationnels du syst\u00e8me de navigation satellite europ\u00e9en, Galileo. Le spectaculaire et explosif d\u00e9collage marquait \u00e9galement un tournant historique avec l'arriv\u00e9e de l'Europe dans l'espace. C'\u00e9tait la premi\u00e8re fois qu'une fus\u00e9e russe Soyuz d\u00e9collait du nouveau site de lancement de Kourou en Guyane fran\u00e7aise, sp\u00e9cialement construit \u00e0 cet effet.<\/p>\n<\/div>\n

Jusque-l\u00e0, les fus\u00e9es Soyuz avaient toujours d\u00e9coll\u00e9 de Ba\u00efkonour au Kazakhstan ou de Plesetsk en Russie. En partant du port spatial europ\u00e9en, proche de l'\u00e9quateur, la fus\u00e9e Soyuz europ\u00e9enne peut transporter jusqu'\u00e0 3 tonnes en \u00ab orbite de transfert g\u00e9ostationnaire \u00bb, contre seulement 1,7 tonne lorsqu'elle d\u00e9colle de Ba\u00efkonour. Cela est rendu possible par l'acc\u00e9l\u00e9ration permise par la rotation terrestre rapide pr\u00e8s de l'\u00e9quateur.<\/p>\n

\"IOV
Les satellites IOV ont \u00e9t\u00e9 largu\u00e9s par l'\u00e9tage sup\u00e9rieur Fregat<\/figcaption><\/figure>\n

Le vol Soyuz VS01, op\u00e9r\u00e9 par Arianespace, est parti \u00e0 10h30 GMT (12h30 HAEC) et tous les \u00e9tages de Soyuz ont parfaitement fonctionn\u00e9. L'\u00e9tage sup\u00e9rieur Fregat-MT a lib\u00e9r\u00e9 les satellites Galileo de validation en orbite (IOV) sur leur cible orbitale \u00e0 23 222 km d'altitude, 3 heures 49 minutes apr\u00e8s le d\u00e9collage.<\/p>\n

Pendant la phase initiale de la mission, les satellites Galileo IOV seront contr\u00f4l\u00e9s depuis Toulouse, en France, par une \u00e9quipe commune de l'ESA et de l'Agence spatiale fran\u00e7aise (CNES). \u00c0 terme, le contr\u00f4le sera transf\u00e9r\u00e9 \u00e0 SpaceOpal, une soci\u00e9t\u00e9 cr\u00e9\u00e9e par le centre a\u00e9rospatial allemand (DLR) et l'italien Telespazio pour 90 jours de tests. L'ann\u00e9e prochaine, deux autres satellites IOV iront rejoindre les deux premiers. Une fois la constellation compl\u00e8te, le syst\u00e8me comptera 30 satellites qui orbiteront en trois orbites diff\u00e9rentes.<\/p>","protected":false},"excerpt":{"rendered":"

A new era began on 21 October with the successful launch of the first pair of operational spacecraft in Europe\u2019s Galileo global navigation satellite system. The spectacular, fiery lift-off was […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2011\/10\/liftoff_of_soyuz_flight_vs019\/18247216-2-eng-GB\/Liftoff_of_Soyuz_flight_VS01.jpg","esa_banner_description":"Liftoff of Soyuz flight VS01","esa_banner_credit":"ESA\/CNES\/ARIANESPACE - S. Corvaja, 2011","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/10\/Liftoff_of_Soyuz_flight_VS019","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[1],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-772","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/772","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=772"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/772\/revisions"}],"predecessor-version":[{"id":4674,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/772\/revisions\/4674"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=772"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=772"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=772"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=772"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=772"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=772"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=772"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}