{"id":836,"date":"2004-12-02T15:57:00","date_gmt":"2004-12-02T14:57:00","guid":{"rendered":"https:\/\/kids.esa.int\/how_does_a_rocket_work\/"},"modified":"2026-10-08T00:32:49","modified_gmt":"2026-10-07T22:32:49","slug":"how_does_a_rocket_work","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/hu\/how_does_a_rocket_work\/","title":{"rendered":"Hogyan m\u0171k\u00f6dik egy rak\u00e9ta?"},"content":{"rendered":"
\n

\u00c9szrevetted m\u00e1r, mi t\u00f6rt\u00e9nik, ha kiengeded a leveg\u0151t egy lufib\u00f3l? A leveg\u0151 az egyik ir\u00e1nyba \u00e1ramlik, a lufi pedig az ellenkez\u0151 ir\u00e1nyba mozog. A rak\u00e9t\u00e1k nagyj\u00e1b\u00f3l ugyan\u00edgy m\u0171k\u00f6dnek. A motor f\u00fav\u00f3k\u00e1j\u00e1b\u00f3l nagy sebess\u00e9ggel kil\u00e9p\u0151 kipufog\u00f3g\u00e1zok tolj\u00e1k el\u0151re a rak\u00e9t\u00e1t.<\/p>\n<\/div>\n

A legt\u00f6bb modern hordoz\u00f3rak\u00e9ta \u2013 p\u00e9ld\u00e1ul az eur\u00f3pai Ariane 5 \u2013 rendk\u00edv\u00fcl bonyolult fel\u00e9p\u00edt\u00e9s\u0171, \u00e9s ind\u00edt\u00e1skor t\u00f6bb sz\u00e1z tonn\u00e1t nyom. Ennek a t\u00f6megnek a legnagyobb r\u00e9sz\u00e9t az \u00fczemanyagok, p\u00e9ld\u00e1ul a foly\u00e9kony hidrog\u00e9n \u00e9s a foly\u00e9kony oxig\u00e9n teszik ki.<\/p>\n

A rak\u00e9t\u00e1knak rengeteg \u00fczemanyagra van sz\u00fcks\u00e9g\u00fck ahhoz, hogy legy\u0151zz\u00e9k a F\u00f6ld gravit\u00e1ci\u00f3j\u00e1t. Csak akkor haladnak el\u00e9g gyorsan ahhoz, hogy p\u00e1ly\u00e1ra \u00e1lljanak, ha el\u00e9rik a 28 000 km\/h sebess\u00e9get.<\/p>\n

A legt\u00f6bb rak\u00e9ta k\u00e9t vagy h\u00e1rom fokozatb\u00f3l \u00e1ll. Amikor egy fokozat elfogyasztja az \u00f6sszes \u00fczemanyag\u00e1t, lev\u00e1lik a rak\u00e9t\u00e1r\u00f3l, hogy megszabaduljanak a felesleges s\u00falyt\u00f3l. Ezut\u00e1n visszahull (\u00e1ltal\u00e1ban az \u00f3ce\u00e1nba, lakott ter\u00fcletekt\u0151l t\u00e1vol) vagy el\u00e9g a l\u00e9gk\u00f6rben.<\/p>\n

A nagy hordoz\u00f3rak\u00e9t\u00e1k gyakran kapnak tov\u00e1bbi lend\u00fcletet az els\u0151 fokozatra r\u00f6gz\u00edtett rak\u00e9t\u00e1kb\u00f3l. Ezek szil\u00e1rd vagy foly\u00e9kony \u00fczemanyagot haszn\u00e1lhatnak. Ezeket is \u00e1ltal\u00e1ban eldobj\u00e1k.<\/p>","protected":false},"excerpt":{"rendered":"

Have you noticed what happens if you let the air out of a balloon? The air goes one way and the balloon moves in the opposite direction. Rockets work in […]<\/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\/2004\/12\/balloons2\/17894905-2-eng-GB\/balloons.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/balloons2","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":[10,41,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-836","post","type-post","status-publish","format-standard","hentry","category-learn","category-rockets-technology","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\/836","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=836"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/836\/revisions"}],"predecessor-version":[{"id":1979,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/836\/revisions\/1979"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=836"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=836"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=836"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=836"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=836"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=836"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=836"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=836"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=836"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}