{"id":745,"date":"2004-12-09T14:59:00","date_gmt":"2004-12-09T13:59:00","guid":{"rendered":"https:\/\/kids.esa.int\/shake_rattle_and_roll\/"},"modified":"2026-10-08T00:31:49","modified_gmt":"2026-10-07T22:31:49","slug":"shake_rattle_and_roll","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/shake_rattle_and_roll\/","title":{"rendered":"Ryst, rasl og rul"},"content":{"rendered":"
\n

Det ydre rum er ekstremt fjendtligt. Rumfart\u00f8jer skal kunne modst\u00e5 ekstreme temperaturer, str\u00e5ling, magnetfelter, meteoritter, vragdele fra andre rumfart\u00f8jer og frav\u00e6ret af luft.<\/p>\n<\/div>\n

Da det er dyrt at bygge og opsende rumfart\u00f8jer, \u00f8nsker vi, at de skal holde s\u00e5 l\u00e6nge som muligt. Hvis satellitterne skal kunne klare sig i rummet i mange \u00e5r, skal de gennemg\u00e5 (og best\u00e5!) en lang r\u00e6kke test p\u00e5 jorden.<\/p>\n

Den f\u00f8rste udfordring, som satellitterne skal klare, er den kraftige st\u00f8j og rystelserne under en raketopsendelse. Dette testes ved at ryste satellitten og uds\u00e6tte den for lyd fra k\u00e6mpe h\u00f8jttalere inde i et specielt kammer.<\/p>\n

Den anden udfordring, som satellitterne skal klare i rummet, er at modst\u00e5 ekstreme varme- og kuldetemperaturer. Ekstrem opvarmning fra Solen simuleres i et lufttomt kammer, der er udstyret med kraftige lamper og spejle. Meget lave temperaturer frembringes ved at pumpe flydende nitrogen gennem r\u00f8r i kammerets v\u00e6gge.<\/p>\n

For at sikre, at de elektriske systemer fungerer, placeres satellitten i et kraftigt magnetfelt, der kan for\u00e5rsage elektriske fejl. Computere overv\u00e5ger alt, hvad der sker ombord p\u00e5 rumfart\u00f8jet under disse pr\u00f8velser.<\/p>\n

I l\u00f8bet af et \u00e5r eller mere bliver hver enkelt del, der udg\u00f8r rumfart\u00f8jet, testet og gentestet. N\u00e5r rumfart\u00f8jet er samlet, testes det igen. F\u00f8rst da kan ingeni\u00f8rerne v\u00e6re sikre p\u00e5, at deres \u00bbbarn\u00ab vil blive en succes, n\u00e5r det n\u00e5r i kredsl\u00f8b.<\/p>","protected":false},"excerpt":{"rendered":"

Outer space is extremely hostile. Spacecraft have to survive extremes of hot and cold, radiation, magnetic fields, meteorites, debris from other spacecraft and lack of air. Since spacecraft are expensive […]<\/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\/2012\/06\/gaia_antenna_in_test_chamber2\/17893611-2-eng-GB\/Gaia_antenna_in_test_chamber.jpg","esa_banner_description":"Gaia antenna in test chamber","esa_banner_credit":"Astrium\u2013A. Martin, 2012","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/06\/Gaia_antenna_in_test_chamber2","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-745","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\/da\/wp-json\/wp\/v2\/posts\/745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=745"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/745\/revisions"}],"predecessor-version":[{"id":1888,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/745\/revisions\/1888"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=745"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=745"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=745"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=745"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=745"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=745"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=745"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}