{"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\/et\/expendable_or_reusable\/","title":{"rendered":"\u00dchekordseks kasutamiseks v\u00f5i korduvkasutatav?"},"content":{"rendered":"<div class=\"lede\">\n<p>Iga kord, kui Euroopa Ariane 5 Kouroust \u00f5hku t\u00f5useb, kukuvad selle raketi astmed ookeani v\u00f5i p\u00f5levad atmosf\u00e4\u00e4ris \u00e4ra. Selliseid kanderakette nagu Ariane 5 nimetatakse \u2018\u00fchekordselt kasutatavateks\u2019.<\/p>\n<\/div>\n<p>Raketi \u00e4ra viskamine iga kord, kui see \u00f5hku t\u00f5useb, tundub raiskav ja kulukas. Siiski hoitakse kulud madalal, valmistades rakette seeriaviisiliselt. Neid ehitatakse konveieril \u2013 umbes nagu kalleid autosid.<\/p>\n<p>\u00dchekordselt kasutatavad raketid v\u00f5ivad samuti olla v\u00e4ga usaldusv\u00e4\u00e4rsed. Kui \u00fcks neist eba\u00f5nnestub stardi ajal, on \u00fcsna lihtne v\u00e4lja selgitada, mis l\u00e4ks valesti, ja seda parandada.<\/p>\n<p>Teine l\u00e4henemisviis on ehitada korduvkasutatav kanderakett. Seni on kasutusel olnud ainult Ameerika \u00dchendriikide kosmoses\u00fcstik.<\/p>\n<p>Suurem osa Shuttle\u2019i orbiterist on konstrueeritud nii, et see suudaks lennata kuni 100 korda. Vajaduse korral saab ka Shuttle\u2019i tahkek\u00fctusega rakettmootoreid uuesti kasutada. Ainult v\u00e4limine k\u00fctusepaak visatakse iga kord \u00e4ra.<\/p>\n<p>Siiski on Shuttle\u2019i ehitamine ja lendamine v\u00e4ga kulukas. See tuleneb peamiselt asjaolust, et see on projekteeritud kuni seitsme meeskonnaliikme veoks. Samuti peab see taluma atmosf\u00e4\u00e4ri sisenemisel tekkivat \u00e4\u00e4rmist kuumust ja maanduma lennurajal. Muid korduvkasutatavaid kanderakette ei ole kavandatud, kuigi selliste s\u00f5idukite uuringud j\u00e4tkuvad.<\/p>\n<p>ESA uurib m\u00f5lemat l\u00e4henemisviisi p\u00f5hjalikult, et l\u00f5puks saaks teha otsuse Ariane 5 asendamise kohta.<\/p>","protected":false},"excerpt":{"rendered":"<p>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 [&hellip;]<\/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\/et\/wp-json\/wp\/v2\/posts\/841","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/comments?post=841"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/841\/revisions"}],"predecessor-version":[{"id":1984,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/841\/revisions\/1984"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=841"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=841"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=841"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=841"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=841"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=841"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=841"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}