{"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\/sv\/shake_rattle_and_roll\/","title":{"rendered":"Skaka, skramla och rocka loss"},"content":{"rendered":"
\n

Yttre rymden \u00e4r extremt og\u00e4stv\u00e4nlig. Rymdfarkoster m\u00e5ste klara extrema temperaturer, str\u00e5lning, magnetf\u00e4lt, meteoriter, rymdskrot fr\u00e5n andra farkoster och avsaknad av luft.<\/p>\n<\/div>\n

Eftersom det \u00e4r dyrt att bygga och skjuta upp rymdfarkoster vill vi att de ska h\u00e5lla s\u00e5 l\u00e4nge som m\u00f6jligt. Om satelliterna ska kunna klara sig i rymden i m\u00e5nga \u00e5r m\u00e5ste de genomg\u00e5 (och klara!) m\u00e5nga tester p\u00e5 marken.<\/p>\n

Den f\u00f6rsta utmaningen som satelliterna m\u00e5ste klara av \u00e4r det h\u00f6ga ljudet och skakningarna under en raketuppskjutning. Detta testas genom att man skakar satelliten och uts\u00e4tter den f\u00f6r ljud fr\u00e5n enorma h\u00f6gtalare inuti en speciell kammare.<\/p>\n

Den andra utmaningen som satelliterna m\u00e5ste klara av i rymden \u00e4r att klara extrema temperaturer, b\u00e5de h\u00f6ga och l\u00e5ga. Den extrema v\u00e4rmen fr\u00e5n solen simuleras i en vakuumkammare utrustad med kraftfulla lampor och speglar. Mycket l\u00e5ga temperaturer \u00e5stadkoms genom att flytande kv\u00e4ve pumpas genom r\u00f6r i kammarv\u00e4ggarna.<\/p>\n

F\u00f6r att s\u00e4kerst\u00e4lla att de elektriska systemen fungerar placeras satelliten i ett kraftfullt magnetf\u00e4lt som kan orsaka elektriska fel. Datorer \u00f6vervakar allt som h\u00e4nder ombord p\u00e5 rymdfarkosten under dessa p\u00e5frestningar.<\/p>\n

Under ett \u00e5r eller mer testas och omtestas varje del som ing\u00e5r i rymdfarkosten. N\u00e4r rymdfarkosten har monterats ihop testas den p\u00e5 nytt. F\u00f6rst d\u00e5 kan ingenj\u00f6rerna vara \u00f6vertygade om att deras \u201dbarn\u201d kommer att bli en framg\u00e5ng n\u00e4r det n\u00e5r omloppsbana.<\/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\/sv\/wp-json\/wp\/v2\/posts\/745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=745"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/745\/revisions"}],"predecessor-version":[{"id":1888,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/745\/revisions\/1888"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=745"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=745"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=745"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=745"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=745"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=745"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=745"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}