{"id":667,"date":"2011-07-05T08:31:00","date_gmt":"2011-07-05T06:31:00","guid":{"rendered":"https:\/\/kids.esa.int\/spacewalks\/"},"modified":"2026-10-08T00:30:56","modified_gmt":"2026-10-07T22:30:56","slug":"spacewalks","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/spacewalks\/","title":{"rendered":"Rymdpromenader"},"content":{"rendered":"
\n

T\u00e4nk dig att g\u00e5 i rymden och flyga runt jorden i en hastighet p\u00e5 \u00f6ver 27 000 km\/h! Det \u00e4r just detta som hundratals rymdvandrare har upplevt under de senaste 50 \u00e5ren. Rymdpromenader (officiellt kallade Extravehicular Activity eller EVA) \u00e4r en viktig del av arbetet i rymden. De anv\u00e4nds f\u00f6r att installera ny utrustning och experiment samt f\u00f6r att utf\u00f6ra reparationer. Sedan 1998 har det kr\u00e4vts n\u00e4stan 1 000 timmars rymdpromenader f\u00f6r att bygga och underh\u00e5lla den internationella rymdstationen.<\/p>\n<\/div>\n

Rymdpromenader b\u00e4r skyddsdr\u00e4kter n\u00e4r de ger sig ut i rymdens luftl\u00f6sa vakuum. Dessa dr\u00e4kter best\u00e5r av m\u00e5nga olika lager som h\u00e5ller b\u00e4raren vid r\u00e4tt temperatur, g\u00f6r det m\u00f6jligt f\u00f6r dem att andas och skyddar dem mot skadlig str\u00e5lning. Syretrycket inuti dr\u00e4kterna \u00e4r l\u00e4gre \u00e4n i rymdstationen. D\u00e4rf\u00f6r m\u00e5ste astronauterna tillbringa cirka fyra timmar med att andas syre inne i en luftsluss innan de kan kliva ut.<\/p>\n

Det finns tv\u00e5 olika tryckdr\u00e4kter f\u00f6rvarade p\u00e5 ISS. Den amerikanska dr\u00e4kten best\u00e5r av tv\u00e5 delar: en h\u00e5rd \u00f6verkropp och en flexibel underkropp. Dessa delar f\u00e4sts ihop vid midjan. Astronautens ben skjuts in i byxorna, varefter armarna och \u00f6verkroppen placeras i den \u00f6vre delen. Den ryska dr\u00e4kten har en styv \u00f6vre del med en bakd\u00f6rr d\u00e4r \u00e4ven livsuppeh\u00e5llningssystemet \u00e4r inbyggt. Detta g\u00f6r det enklare att ta p\u00e5 sig dr\u00e4kten med en hand. B\u00e5da dr\u00e4kterna har separata handskar och hj\u00e4lmar.<\/p>\n

Rymdpromen\u00f6rerna f\u00f6rflyttas ofta fr\u00e5n plats till plats med hj\u00e4lp av en robotarm. Det finns ocks\u00e5 s\u00e4rskilda ledst\u00e4nger som underl\u00e4ttar deras f\u00f6rflyttningar. F\u00f6r att f\u00f6rhindra att de flyter iv\u00e4g och f\u00f6rsvinner ut i rymden \u00e4r de f\u00e4sta vid stationen med tunna rep. Rymdpromenader kan p\u00e5g\u00e5 i m\u00e5nga timmar. Rekordet innehas av Susan Helms och James Voss, som tillbringade n\u00e4stan 9 timmar i rymden i mars 2001.<\/p>","protected":false},"excerpt":{"rendered":"

Imagine walking in space and flying around the Earth at more than 27,000 km\/h! This is what hundreds of spacewalkers have experienced in the last 50 years. Spacewalks (officially known […]<\/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\/2010\/10\/esa_astronaut_christer_fuglesang2\/17910714-2-eng-GB\/ESA_astronaut_Christer_Fuglesang.jpg","esa_banner_description":"","esa_banner_credit":"NASA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2010\/10\/ESA_astronaut_Christer_Fuglesang2","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":[10,13,63],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-667","post","type-post","status-publish","format-standard","hentry","category-learn","category-life-in-space","category-living-in-space","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/667","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=667"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/667\/revisions"}],"predecessor-version":[{"id":1810,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/667\/revisions\/1810"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=667"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=667"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=667"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=667"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=667"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=667"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=667"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}