{"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\/ro\/sailing_through_space\/","title":{"rendered":"C\u0103l\u0103torind prin spa\u021biu"},"content":{"rendered":"
\n

P\u00e2n\u0103 \u00een prezent, aproape toate misiunile spa\u021biale au folosit motoare de rachet\u0103 alimentate cu combustibil chimic. Din p\u0103cate, acestea nu sunt foarte eficiente. De exemplu, peste jum\u0103tate din greutatea la lansare a navei spa\u021biale Rosetta a ESA era reprezentat\u0103 de combustibil.<\/p>\n<\/div>\n

ESA analizeaz\u0103 \u00een prezent modalit\u0103\u021bi de a reduce cantitatea de combustibil transportat\u0103. Una dintre idei este un motor ionic, care folose\u0219te un \u2018tun\u2019 electric pentru a propulsa gazul \u00een spa\u021biu.<\/p>\n

De\u0219i for\u021ba de propulsie a motorului este foarte mic\u0103, viteza cre\u0219te treptat. \u00cen cele din urm\u0103, aceasta permite navei spa\u021biale s\u0103 se deplaseze cu vitez\u0103 foarte mare.<\/p>\n

\"Artist's
Reprezentare artistic\u0103 a sondei SMART-1<\/figcaption><\/figure>\n

O rachet\u0103 cu propulsie ionic\u0103 a fost testat\u0103 cu succes de sonda SMART-1 \u00een timpul zborului s\u0103u c\u0103tre Lun\u0103. Motorul a generat o for\u021b\u0103 de propulsie de 10 ori mai mare dec\u00e2t un motor de rachet\u0103 obi\u0219nuit pentru fiecare kilogram de combustibil consumat.<\/p>\n

ESA studiaz\u0103, de asemenea, nave spa\u021biale care utilizeaz\u0103 vele solare \u00een locul motoarelor. Lumina soarelui care love\u0219te o vel\u0103 mare, asem\u0103n\u0103toare unei oglinzi, va putea \u00eempinge nava spa\u021bial\u0103 c\u0103tre alte planete. Dup\u0103 multe luni, o astfel de nav\u0103 spa\u021bial\u0103 ar putea atinge o vitez\u0103 de 360 000 km\/h.<\/p>\n

O alt\u0103 modalitate de a economisi combustibil \u0219i greutate este aceea de a \u00eencetini viteza prin traversarea atmosferei superioare a unei planete. ESA inten\u021bioneaz\u0103 s\u0103 construiasc\u0103 o nav\u0103 spa\u021bial\u0103 care va intra pe orbita planetei Marte folosind aceast\u0103 metod\u0103 de \u2018aerocaptur\u0103\u2019.<\/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\/ro\/wp-json\/wp\/v2\/posts\/1140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/comments?post=1140"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/1140\/revisions"}],"predecessor-version":[{"id":4867,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/1140\/revisions\/4867"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=1140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=1140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=1140"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=1140"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=1140"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=1140"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=1140"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=1140"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=1140"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=1140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}