{"id":841,"date":"2004-12-02T15:46:00","date_gmt":"2004-12-02T14:46:00","guid":{"rendered":"https:\/\/kids.esa.int\/expendable_or_reusable\/"},"modified":"2026-10-08T00:32:53","modified_gmt":"2026-10-07T22:32:53","slug":"expendable_or_reusable","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/expendable_or_reusable\/","title":{"rendered":"Za enkratno uporabo ali za ve\u010dkratno uporabo?"},"content":{"rendered":"
\n

Vsaki\u010d, ko evropska raketa Ariane 5 vzleti iz Kourouja, njene stopnje padejo v ocean ali se se\u017egejo v atmosferi. Nosilne rakete, kot je Ariane 5, se imenujejo \u2018potro\u0161ne\u2019.<\/p>\n<\/div>\n

Zdi se, da je zavr\u017eanje rakete ob vsakem izstrelitvi potratno in drago. Vendar se stro\u0161ki zmanj\u0161ujejo s serijsko proizvodnjo raket. Izdelujejo se na teko\u010dih trakovih \u2013 podobno kot dragi avtomobili.<\/p>\n

Tudi rakete za enkratno uporabo lahko postanejo zelo zanesljive. \u010ce ena med izstrelitvijo odpove, je precej enostavno ugotoviti, kaj je \u0161lo narobe, in to popraviti.<\/p>\n

Drugi pristop je izdelava ponovno uporabne nosilne rakete. Do zdaj je bila edina, ki se je uporabljala, ameri\u0161ka vesoljska ladja Space Shuttle.<\/p>\n

Ve\u010dina delov orbiterja raketoplana je zasnovana tako, da lahko opravijo do 100 poletov. Tudi trdna raketna pospe\u0161evalna telesa raketoplana se lahko po potrebi ponovno uporabijo. Le zunanji rezervoar za gorivo se vsaki\u010d zavr\u017ee.<\/p>\n

Vendar pa je izdelava in letenje s Shuttleom zelo drago. To je predvsem zato, ker je zasnovan za prevoz do sedmih \u010dlanov posadke. Poleg tega mora prenesti ekstremno vro\u010dino pri ponovnem vstopu v atmosfero in pristati na vzletno-pristajalni stezi. Nobenih drugih ponovno uporabnih nosilnih raket ni v na\u010drtu, \u010deprav se raziskave tak\u0161nih plovil nadaljujejo.<\/p>\n

ESA bo natan\u010dno preu\u010dila oba pristopa, da bo na koncu mogo\u010de sprejeti odlo\u010ditev o tem, kako nadomestiti raketo Ariane 5.<\/p>","protected":false},"excerpt":{"rendered":"

Every time Europe\u2019s Ariane 5 lifts off from Kourou, its rocket stages fall into the ocean or burn up in the atmosphere. Launchers such as Ariane 5 are said to […]<\/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\/2000\/08\/atmospheric_re-entry_demonstrator_-_artist_s_impression2\/17866009-3-eng-GB\/Atmospheric_Re-entry_Demonstrator_-_artist_s_impression.jpg","esa_banner_description":"Atmospheric Re-entry Demonstrator - artist's impression","esa_banner_credit":"ESA - D.Ducros","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2000\/08\/Atmospheric_Re-entry_Demonstrator_-_artist_s_impression2","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":[10,41,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-841","post","type-post","status-publish","format-standard","hentry","category-learn","category-rockets-technology","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/841","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=841"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/841\/revisions"}],"predecessor-version":[{"id":1984,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/841\/revisions\/1984"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=841"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=841"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=841"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=841"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=841"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=841"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=841"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}