{"id":820,"date":"2004-12-02T15:35:00","date_gmt":"2004-12-02T14:35:00","guid":{"rendered":"https:\/\/kids.esa.int\/gravity_assists\/"},"modified":"2026-10-08T00:32:39","modified_gmt":"2026-10-07T22:32:39","slug":"gravity_assists","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/gravity_assists\/","title":{"rendered":"Gravitacijski manevri"},"content":{"rendered":"
\n

Kot veste, avtomobil obi\u010dajno upo\u010dasni, ko se vzpenja v hrib, in pospe\u0161i, ko se spu\u0161\u010da navzdol. Lahko bi rekli, da avtomobilu pomaga \u2018gravitacija\u2019, saj mu zemeljska gravitacija pomaga upo\u010dasniti ali pospe\u0161iti vo\u017enjo. Na enak na\u010din lahko tudi vesoljsko plovilo izkoristi brezpla\u010dno vo\u017enjo, ne da bi porabljalo dragoceno gorivo.<\/p>\n<\/div>\n

Gravitacijski manever se zgodi, ko vesoljsko plovilo preleti mimo planeta ali velikega lune. Tako gravitacija planeta privla\u010di vesoljsko plovilo in spremeni njegovo tirnico.<\/p>\n

V\u010dasih vesoljsko plovilo pospe\u0161i, v\u010dasih pa upo\u010dasni \u2013 odvisno od tega, ali preleti planet od zadaj ali od spredaj. Gravitacijski manever spremeni tudi smer, v kateri se vesoljsko plovilo giblje.<\/p>\n

Eden najbolj neverjetnih gravitacijskih manevrov je bil uporabljen pri misiji Ulysses agencije ESA. S preletom nad Jupitrovim severnim polom je bila sonda Ulysses usmerjena v orbito, ki jo je popeljala nad Son\u010deva pola.<\/p>\n

Misija Cassini-Huygens je na poti do Saturna izkoristila \u0161tiri gravitacijske manevre (enega z Zemljo, dva z Venero in enega z Jupitrom).<\/p>\n

Gravitacija je imela pomembno vlogo tudi pri misiji SMART-1 Evropske vesoljske agencije (ESA). Po 14 mesecih spiralnega oddaljevanja od Zemlje je vesoljsko plovilo za\u010delo \u010dutiti gravitacijski vpliv Lune. Novembra 2004 je SMART-1 zajela lunina gravitacija in je vstopil v orbito okoli Lune.<\/p>","protected":false},"excerpt":{"rendered":"

As you know, a car tends to slow down when it goes up a mountain and to accelerate when it is going downhill. One can say that the car is […]<\/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\/08\/ulysses_and_the_heliosphere2\/17889541-2-eng-GB\/Ulysses_and_the_heliosphere.jpg","esa_banner_description":"Ulysses and the heliosphere","esa_banner_credit":"ESA (image by D. Hardy)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/08\/Ulysses_and_the_heliosphere2","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":[10,65,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-820","post","type-post","status-publish","format-standard","hentry","category-learn","category-mission-control","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\/820","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=820"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/820\/revisions"}],"predecessor-version":[{"id":1963,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/820\/revisions\/1963"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=820"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=820"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=820"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=820"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=820"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=820"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=820"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}