{"id":830,"date":"2004-12-02T15:03:00","date_gmt":"2004-12-02T14:03:00","guid":{"rendered":"https:\/\/kids.esa.int\/esa_s_test_centre\/"},"modified":"2026-10-08T00:32:45","modified_gmt":"2026-10-07T22:32:45","slug":"esa_s_test_centre","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/esa_s_test_centre\/","title":{"rendered":"ESAn testauskeskus"},"content":{"rendered":"<div class=\"lede\">\n<p>Suurin osa ESA:n avaruusaluksista testataan Alankomaissa sijaitsevassa Euroopan avaruustutkimus- ja teknologiakeskuksessa (ESTEC). ESTEC:n testauskeskuksessa on kaikki tarvittava avaruusaluksen testaamiseen ennen sen siirt\u00e4mist\u00e4 laukaisupaikalle.<\/p>\n<\/div>\n<p>Suurta avaruussimulaattoria kutsutaan toisinaan \u2018t\u00f6lkiss\u00e4 olevaksi avaruudeksi\u2019. Kammion sis\u00e4ll\u00e4 satelliitti altistetaan \u00e4\u00e4rimm\u00e4isille, avaruutta muistuttaville olosuhteille. Kun ilma on pumpattu pois, satelliitin l\u00e4mp\u00f6tilaa voidaan s\u00e4\u00e4t\u00e4\u00e4 vaihtelemaan 100 \u00baC:sta \u2013 veden kiehumispisteest\u00e4 \u2013 aina -100 \u00baC:n pakkasl\u00e4mp\u00f6tilaan asti. Ihminen ei selvi\u00e4isi t\u00e4llaisissa l\u00e4mp\u00f6tiloissa!<\/p>\n<p>Erityisill\u00e4 t\u00e4ristyslaitteilla varmistetaan, ett\u00e4 satelliitti kest\u00e4\u00e4 voimakkaita t\u00e4rin\u00f6it\u00e4 etenkin laukaisun aikana. Euroopan suurin t\u00e4ristyslaite on ESA:n moniakselinen t\u00e4ristyslaite, nimelt\u00e4\u00e4n Hydra.<\/p>\n<p>Large European Acoustic Facility -laitoksessa varmistetaan, ett\u00e4 satelliitti kest\u00e4\u00e4 laukaisun korvia raastavan melun. Satelliittiin kohdistetaan \u00e4\u00e4ni\u00e4 valtavista kaiuttimista.<\/p>\n<p>Muilla testeill\u00e4 varmistetaan, ett\u00e4 avaruusaluksen s\u00e4hk\u00f6laitteet toimivat oikein. Huolellisten tarkastusten avulla varmistetaan, etteiv\u00e4t eri j\u00e4rjestelm\u00e4t vaikuta toisiinsa. My\u00f6s staattinen s\u00e4hk\u00f6 voi muodostaa uhan.<\/p>\n<p>Viestint\u00e4antennit testataan ter\u00e4sh\u00e4kiss\u00e4, joka est\u00e4\u00e4 ulkoisten televisio- ja radiosignaalien p\u00e4\u00e4syn sis\u00e4\u00e4n. Sein\u00e4t on vuorattu erityisell\u00e4 materiaalilla, jotta huone on yht\u00e4 hiljainen kuin avaruuden syvyyksiss\u00e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>Most ESA spacecraft are tested at the European Space Research and Technology Centre (ESTEC) in the Netherlands. The ESTEC Test Centre has everything that is needed to check out a [&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\/1998\/01\/meteosat_second_generation_msg_testing_at_estec6\/17863122-3-eng-GB\/Meteosat_Second_Generation_MSG_testing_at_ESTEC.jpg","esa_banner_description":"Meteosat Second Generation (MSG) testing at ESTEC","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/1998\/01\/Meteosat_Second_Generation_MSG_testing_at_ESTEC6","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-830","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\/830","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=830"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/830\/revisions"}],"predecessor-version":[{"id":1973,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/830\/revisions\/1973"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=830"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=830"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=830"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=830"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=830"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=830"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=830"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}