{"id":834,"date":"2004-12-02T15:32:00","date_gmt":"2004-12-02T14:32:00","guid":{"rendered":"https:\/\/kids.esa.int\/building_a_spacecraft\/"},"modified":"2026-10-08T00:32:48","modified_gmt":"2026-10-07T22:32:48","slug":"building_a_spacecraft","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/building_a_spacecraft\/","title":{"rendered":"Avaruusaluksen rakentaminen"},"content":{"rendered":"<div class=\"lede\">\n<p>Avaruusaluksia on monenlaisia ja -kokoisia. Ne suorittavat monenlaisia teht\u00e4vi\u00e4. Toisin kuin autojen kohdalla, on harvinaista l\u00f6yt\u00e4\u00e4 yli 10 t\u00e4ysin samanlaista satelliittia. Suurin osa niist\u00e4 on ainutlaatuisia, ja jokainen on koottu huolellisesti k\u00e4sin. T\u00e4st\u00e4 huolimatta ne kaikki on suunniteltu ja rakennettu samalla tavalla.<\/p>\n<\/div>\n<p>Satelliitti koostuu kahdesta p\u00e4\u00e4osasta: alustasta (eli busista) ja hy\u00f6tykuormasta (mittalaitteista tai kokeista).<\/p>\n<p>Alusta on metallinen perusrakenne. Sen on oltava vahva, mutta kevyt. Se k\u00e4sitt\u00e4\u00e4 rungon, jonka ymp\u00e4rille kaikki on rakennettu, sek\u00e4 avaruusaluksen eri j\u00e4rjestelm\u00e4t \u2013 ohjausmoottorit, p\u00e4\u00e4moottori, polttoaines\u00e4ili\u00f6t ja virtal\u00e4hde. Hy\u00f6tykuorma sis\u00e4lt\u00e4\u00e4 laitteet, joilla pidet\u00e4\u00e4n yhteytt\u00e4 maahan, sek\u00e4 kamerat ja muut tieteelliset instrumentit.<\/p>\n<p>Satelliitin osat valmistetaan monissa eri paikoissa. Ne l\u00e4hetet\u00e4\u00e4n kaikki yhteen keskukseen, jossa ne kootaan ja testataan erityisiss\u00e4 puhdastiloissa. Vasta sen j\u00e4lkeen avaruusalus l\u00e4hetet\u00e4\u00e4n laukaisukeskukseen.<\/p>\n<p>Koska avaruudessa ei ole korjaamoja, monissa satelliiteissa on mukana omat \u2018varaosat\u2019. Jos laite menee rikki, lennonjohtajat voivat k\u00e4skytt\u00e4\u00e4 avaruusaluksen siirtym\u00e4\u00e4n varalaitteeseen.<\/p>","protected":false},"excerpt":{"rendered":"<p>Spacecraft come in many shapes and sizes. They perform many different jobs. Unlike cars, it is rare to find more than 10 satellites that are the same. Most of them [&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\/2001\/11\/building_blocks2\/17864824-3-eng-GB\/building_blocks.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2001\/11\/building_blocks2","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":[10,44,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-834","post","type-post","status-publish","format-standard","hentry","category-learn","category-spacecraft","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/834","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=834"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/834\/revisions"}],"predecessor-version":[{"id":1977,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/834\/revisions\/1977"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=834"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=834"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=834"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=834"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=834"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=834"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=834"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=834"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=834"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=834"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}