{"id":230728,"date":"2014-08-24T22:00:00","date_gmt":"2014-08-24T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/galileo-anomalie-dinjection-resultats-des-premieres-analyses-de-donnees\/"},"modified":"2014-08-24T22:00:00","modified_gmt":"2014-08-24T22:00:00","slug":"galileo-anomalie-dinjection-resultats-des-premieres-analyses-de-donnees","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/galileo-anomalie-dinjection-resultats-des-premieres-analyses-de-donnees\/","title":{"rendered":"Galileo : anomalie d’injection r\u00e9sultats des premi\u00e8res analyses de donn\u00e9es"},"content":{"rendered":"

L’orbite visée était circulaire, inclinée à 55 degrés et avec un demi grand axe de 29 900 km. L’orbite atteinte est elliptique avec une excentricité de 0,23, un demi grand axe de 26 200 km et une inclinaison de 49,8 degrés. L’état et le positionnement de l’étage supérieur Fregat et des deux satellites sont stables et ne présentent aucun risque pour les populations. L’étage Fregat a d’ailleurs été vidangé de ses ergols résiduels et dépressurisé de façon normale. Selon les premières analyses effectuées, une anomalie se serait produite pendant la phase de vol de l’étage supérieur Fregat, conduisant à une injection des satellites sur une orbite non-conforme. <\/p>\n

Les études et les analyses de données se poursuivent à Kourou et à Evry sous la coordination de Stéphane Israël, PDG d’Arianespace. Elles sont menées en collaboration avec les partenaires russes du programme Soyuz en Guyane (Roscosmos et les industriels RKTs-Progress et NPO-Lavotchkine), ainsi qu’avec l’ESA et ses partenaires industriels, afin de déterminer le périmètre de l’anomalie et son impact sur la mission. <\/p>\n

http:\/\/www.arianespace.com <\/a><\/em><\/p>\n

http:\/\/www.arianespace.tv<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Arianespace a lanc\u00e9 le 22 ao\u00fbt 2014, \u00e0 9:27 heure locale en Guyane, un lanceur Soyouz ST transportant deux satellites de la constellation Galileo. Le d\u00e9collage et la premi\u00e8re partie de la mission se sont d\u00e9roul\u00e9s de fa\u00e7on normale, conduisant \u00e0 une s\u00e9paration des satellites selon la s\u00e9quence pr\u00e9vue, et \u00e0 la r\u00e9ception du signal. Ce n’est qu’apr\u00e8s la s\u00e9paration des satellites, et en temps diff\u00e9r\u00e9, que l’exploitation progressive des informations fournies par les stations de t\u00e9l\u00e9mesure de l’ESA et du CNES a r\u00e9v\u00e9l\u00e9 que l’orbite atteinte n’\u00e9tait pas conforme \u00e0 l\u2019attendue.<\/p>\n","protected":false},"author":22,"featured_media":230729,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-230728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","domains-electronique-eci"],"acf":[],"yoast_head":"Galileo : anomalie d'injection r\u00e9sultats des premi\u00e8res analys...<\/title>\n<meta name=\"description\" content=\"Arianespace a lanc\u00e9 le 22 ao\u00fbt 2014, \u00e0 9:27 heure locale en Guyane, un lanceur Soyouz ST transportant deux satellites de la constellation Galileo. 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