{"id":4289,"date":"2022-05-04T20:48:06","date_gmt":"2022-05-04T18:48:06","guid":{"rendered":"https:\/\/www.bumax-fasteners.com\/?p=4289"},"modified":"2022-05-04T20:48:34","modified_gmt":"2022-05-04T18:48:34","slug":"bumax-fournit-une-solution-pour-le-plus-grand-telescope-optique-du-monde","status":"publish","type":"post","link":"https:\/\/regroup-development.com\/bumax\/fr\/bumax-fournit-une-solution-pour-le-plus-grand-telescope-optique-du-monde\/","title":{"rendered":"BUMAX fournit une solution pour le plus grand t\u00e9lescope optique du monde"},"content":{"rendered":"

Une application exigeante<\/h2>\n

La soci\u00e9t\u00e9 n\u00e9erlandaise VDL ETG Projects construit la structure porteuse du miroir principal de l\u2019ESO ELT dans le nord du Chili.\u00a0 \u00c0 plus de 3 000 m d\u2019altitude dans le d\u00e9sert d\u2019Atacama, l\u2019ELT permettra de nouvelles d\u00e9couvertes scientifiques li\u00e9es aux plan\u00e8tes, \u00e0 la composition des galaxies voisines et \u00e0 l\u2019univers profond.<\/p>\n

La structure se compose de 798 structures de support individuelles pour les segments de miroir, chacune de 1,4 m de diam\u00e8tre et entra\u00een\u00e9e par plusieurs moteurs \u00e9lectriques pour optimiser la pr\u00e9cision. Le miroir principal du t\u00e9lescope aura un diam\u00e8tre de plus de 39 m pour recueillir 100 millions de fois plus de lumi\u00e8re que l\u2019\u0153il humain, et 13 fois plus de lumi\u00e8re que les plus grands t\u00e9lescopes optiques en 2014.<\/p>\n

Au total, environ un milliard d\u2019euros ont \u00e9t\u00e9 mis \u00e0 disposition pour le projet ELT. Le t\u00e9lescope sera op\u00e9rationnel en 2024.<\/p>\n

La n\u00e9cessit\u00e9 d\u2019une solution au-del\u00e0 des normes<\/h2>\n

\u00ab Initialement, les boulons en acier inoxydable standard ont \u00e9t\u00e9 incorpor\u00e9s dans la conception du projet ELT, mais nos calculs et tests ont montr\u00e9 qu\u2019ils manquaient de r\u00e9sistance m\u00e9caniques\u00bb, explique Michael Evers, chef de projet chez VDL ETG. \u00ab Nous avions besoin d\u2019un boulon de r\u00e9sistance mecanqiue 10.9, mais avec la r\u00e9sistance \u00e0 la corrosion d\u2019un acier inoxydable. BUMAX nous a offert \u00a0la solution parfaite. \u00bb<\/p>\n

La solution BUMAX<\/h2>\n

Les fixations BUMAX sont utilis\u00e9es pour fixer les miroirs du t\u00e9lescope \u00e0 leurs supports L\u2019ELT utilise 12 \u00a0boulons BUMAX\u00ae 109 M6 de 10 mm de long par segment\u00a0:Un total de 798 segments, plus 133 segments suppl\u00e9mentaires pour un processus d\u2019\u00e9change continu.<\/p>\n

Les boulons M6 de 10 mm de long \u00e9taient un produit personnalis\u00e9 qui n\u00e9cessitait des outils sp\u00e9ciaux pour la fabrication. Suite \u00e0 une demande du client, les boulons ont \u00e9galement \u00e9t\u00e9 recouverts de Dicronite\u00ae pour minimiser les frottements. Le rev\u00eatement Dicronite\u00ae est un traitement de surface courant pour les fixations utilis\u00e9es dans les t\u00e9lescopes.<\/p>\n

\u00ab Les fixations BUMAX 109 \u00e0 haute r\u00e9sistance emp\u00eachent l\u2019endommagement des \u00a0segments de miroir, qui sont tr\u00e8s co\u00fbteux \u00bb, explique Evers. \u00ab Leur r\u00e9sistance \u00e0 la corrosion est \u00e9galement essentielle car les fixations sont parfois en contact avec l\u2019air et r\u00e9duiront les besoins de maintenance futurs. \u00bb<\/p>\n

Pour plus d\u2019informations sur l\u2019ELT :<\/p>\n

https:\/\/www.eso.org\/public\/teles-instr\/elt\/<\/a><\/p>\n

 <\/p>\n

Lien vers https:\/\/www.eso.org\/public\/teles-instr\/elt\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Une application exigeante La soci\u00e9t\u00e9 n\u00e9erlandaise VDL ETG Projects construit la structure porteuse du miroir principal de l\u2019ESO ELT dans…<\/p>\n","protected":false},"author":1,"featured_media":4267,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[],"class_list":["post-4289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-customer-case","market_segment-general-engineering","market_segment-space"],"yoast_head":"\nBUMAX fournit une solution pour le plus grand t\u00e9lescope optique du monde - Bumax<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/regroup-development.com\/bumax\/bumax-provides-solution-for-the-worlds-largest-optical-telescope\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"BUMAX fournit une solution pour le plus grand t\u00e9lescope optique du monde - 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