{"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\/hu\/gravity_assists\/","title":{"rendered":"Gravit\u00e1ci\u00f3s seg\u00edts\u00e9g"},"content":{"rendered":"
\n

Mint tudj\u00e1tok, egy aut\u00f3 \u00e1ltal\u00e1ban lassul, amikor hegyre hajt fel, \u00e9s gyorsul, amikor lefel\u00e9 halad. Azt mondhatjuk, hogy az aut\u00f3 \u2018gravit\u00e1ci\u00f3s seg\u00edts\u00e9get\u2019 kap, mivel a F\u00f6ld gravit\u00e1ci\u00f3ja seg\u00edt neki lassulni vagy gyorsulni. Ugyan\u00edgy egy \u0171rhaj\u00f3 is ingyenes utaz\u00e1st kaphat, an\u00e9lk\u00fcl, hogy \u00e9rt\u00e9kes \u00fczemanyagot haszn\u00e1lna fel.<\/p>\n<\/div>\n

A gravit\u00e1ci\u00f3s man\u0151ver akkor val\u00f3sul meg, amikor egy \u0171rhaj\u00f3 elhalad egy bolyg\u00f3 vagy egy nagy hold mellett. Ez\u00e1ltal a bolyg\u00f3 gravit\u00e1ci\u00f3ja hat\u00e1st gyakorol az \u0171rhaj\u00f3ra, \u00e9s megv\u00e1ltoztatja annak p\u00e1ly\u00e1j\u00e1t.<\/p>\n

Az \u0171rhaj\u00f3 n\u00e9ha felgyorsul, n\u00e9ha pedig lelassul \u2013 att\u00f3l f\u00fcgg\u0151en, hogy a bolyg\u00f3 m\u00f6g\u00f6tt vagy el\u0151tte halad-e el. A gravit\u00e1ci\u00f3s man\u0151ver az \u0171rhaj\u00f3 halad\u00e1si ir\u00e1ny\u00e1t is megv\u00e1ltoztatja.<\/p>\n

Az egyik legleny\u0171g\u00f6z\u0151bb gravit\u00e1ci\u00f3s man\u0151vert az ESA Ulysses-misszi\u00f3ja sor\u00e1n alkalmazt\u00e1k. Az Ulysses a Jupiter \u00e9szaki sarka felett elhaladva olyan p\u00e1ly\u00e1ra ker\u00fclt, amely a Nap sarkai felett vezetett.<\/p>\n

A Cassini\u2013Huygens-k\u00fcldet\u00e9s a Szaturnusz fel\u00e9 vezet\u0151 \u00fatja sor\u00e1n n\u00e9gy gravit\u00e1ci\u00f3s man\u0151vert hajtott v\u00e9gre (egyet a F\u00f6ldn\u00e9l, kett\u0151t a V\u00e9nuszn\u00e1l \u00e9s egyet a Jupitern\u00e9l).<\/p>\n

A gravit\u00e1ci\u00f3 az ESA SMART-1 k\u00fcldet\u00e9s\u00e9ben is szerepet j\u00e1tszott. Miut\u00e1n 14 h\u00f3napig spir\u00e1lp\u00e1ly\u00e1n t\u00e1volodott a F\u00f6ldt\u0151l, az \u0171reszk\u00f6z elkezdte \u00e9rezni a Hold vonz\u00e1s\u00e1t. 2004 november\u00e9ben a SMART-1-et a Hold gravit\u00e1ci\u00f3ja mag\u00e1hoz vonzotta, \u00e9s a Hold k\u00f6r\u00fcli p\u00e1ly\u00e1ra \u00e1llt.<\/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\/hu\/wp-json\/wp\/v2\/posts\/820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/comments?post=820"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/820\/revisions"}],"predecessor-version":[{"id":1963,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/820\/revisions\/1963"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=820"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=820"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=820"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=820"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=820"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=820"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=820"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}