{"id":1140,"date":"2004-11-19T09:43:00","date_gmt":"2004-11-19T08:43:00","guid":{"rendered":"https:\/\/kids.esa.int\/sailing_through_space\/"},"modified":"2026-10-09T11:30:53","modified_gmt":"2026-10-09T09:30:53","slug":"sailing_through_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/sailing_through_space\/","title":{"rendered":"Plovba skozi vesolje"},"content":{"rendered":"
\n

Do sedaj so pri skoraj vseh vesoljskih misijah uporabljali raketne motorje, ki delujejo na kemi\u010dno gorivo. Na \u017ealost ti niso ravno u\u010dinkoviti. Na primer, ve\u010d kot polovico izstrelitvene mase vesoljske sonde Rosetta agencije ESA je predstavljalo gorivo.<\/p>\n<\/div>\n

ESA trenutno preu\u010duje mo\u017enosti za zmanj\u0161anje koli\u010dine goriva, ki se preva\u017ea. Ena od idej je ionski motor, ki s pomo\u010djo elektri\u010dnega \u2018topa\u2019 izstreljuje plin v vesolje.<\/p>\n

\u010ceprav je potisk motorja naprej zelo majhen, se hitrost postopoma pove\u010duje. S\u010dasoma to vesoljskemu plovilu omogo\u010di, da potuje zelo hitro.<\/p>\n

\"Artist's
Umetni\u0161ka upodobitev sonda SMART-1<\/figcaption><\/figure>\n

Sonda SMART-1 je na poti k Luni uspe\u0161no preizkusila ionski pogon. Pogon je na vsak kilogram porabljenega goriva proizvedel 10-krat ve\u010d potiska kot obi\u010dajni raketni motor.<\/p>\n

ESA raziskuje tudi vesoljska plovila, ki namesto pogonskih motorjev uporabljajo son\u010dna jadra. Son\u010dna svetloba, ki pada na veliko, ogledalo podobno jadro, bo lahko potiskala vesoljsko plovilo proti drugim planetom. Po ve\u010d mesecih bi tak\u0161no vesoljsko plovilo lahko doseglo hitrost 360 000 km\/h.<\/p>\n

\u0160e en na\u010din za var\u010devanje z gorivom in zmanj\u0161anje te\u017ee je upo\u010dasnitev z letom skozi zgornjo atmosfero planeta. ESA na\u010drtuje izgradnjo vesoljskega plovila, ki bo z uporabo te metode \u2018aerokapturacije\u2019 vstopilo v orbito okoli Marsa.<\/p>","protected":false},"excerpt":{"rendered":"

Until now, nearly all space missions have used rocket motors that feed on chemical fuel. Unfortunately, these are not very efficient. For example, over half the launch weight of ESA’s […]<\/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\/2003\/04\/close-up_view_of_smart-1_s_stationary_plasma_thruster2\/17900310-2-eng-GB\/Close-up_view_of_SMART-1_s_stationary_plasma_thruster.jpg","esa_banner_description":"Close-up view of SMART-1's stationary plasma thruster","esa_banner_credit":"ESA 2002. Illustration by Medialab.","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/04\/Close-up_view_of_SMART-1_s_stationary_plasma_thruster2","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-1140","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\/sl\/wp-json\/wp\/v2\/posts\/1140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=1140"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/1140\/revisions"}],"predecessor-version":[{"id":4867,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/1140\/revisions\/4867"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=1140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=1140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=1140"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=1140"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=1140"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=1140"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=1140"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=1140"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=1140"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=1140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}