{"id":1139,"date":"2004-11-19T09:40:00","date_gmt":"2004-11-19T08:40:00","guid":{"rendered":"https:\/\/kids.esa.int\/new_transport\/"},"modified":"2026-10-08T00:36:27","modified_gmt":"2026-10-07T22:36:27","slug":"new_transport","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/ro\/new_transport\/","title":{"rendered":"Mijloace de transport noi"},"content":{"rendered":"
\n

Spa\u021biul este imens. O c\u0103l\u0103torie c\u0103tre Lun\u0103 \u2013 vecina noastr\u0103 din spa\u021biu \u2013 va dura trei zile cu ajutorul rachetelor chimice obi\u0219nuite. C\u0103l\u0103toriile c\u0103tre Marte, asteroizi \u0219i planetele exterioare ar dura multe luni sau chiar ani.<\/p>\n<\/div>\n

\u00cen timpul c\u0103l\u0103toriilor lungi, starea de s\u0103n\u0103tate \u0219i condi\u021bia fizic\u0103 a astronau\u021bilor sunt afectate de expunerea la radia\u021bii \u0219i de imponderabilitate. Misiunile de lung\u0103 durat\u0103 necesit\u0103, de asemenea, mai mult aer, ap\u0103 \u0219i hran\u0103 \u0219i sporesc riscul apari\u021biei unor probleme. Dar cum pot fi scurtate aceste misiuni?<\/p>\n

O solu\u021bie ar fi cre\u0219terea eficien\u021bei motoarelor de rachet\u0103. Inginerii ESA au construit deja un sistem de propulsie electric pentru misiunea SMART-1 c\u0103tre Lun\u0103. Motoarele electrice sunt mult mai mici \u0219i mai u\u0219oare dec\u00e2t motoarele obi\u0219nuite. De\u0219i consum\u0103 mult mai pu\u021bin combustibil, acestea sunt capabile s\u0103 genereze o vitez\u0103 de evacuare mai mare \u2013 viteza cu care gazul din motor este propulsat \u00een spa\u021biu.<\/p>\n

Folosind energia electric\u0103 generat\u0103 de lumina soarelui care cade pe \u2018aripile\u2019 alc\u0103tuite din celule solare, acestea pot cre\u0219te treptat viteza unei nave spa\u021biale p\u00e2n\u0103 c\u00e2nd aceasta ajunge s\u0103 se deplaseze de multe ori mai repede dec\u00e2t o rachet\u0103 chimic\u0103.<\/p>\n

Pentru misiunile la mare distan\u021b\u0103 de Soare, vor fi necesare motoare nucleare. Cu ajutorul acestor motoare, ar putea deveni posibil, \u00een viitor, s\u0103 se ajung\u0103 pe Marte \u00een doar c\u00e2teva zile.<\/p>","protected":false},"excerpt":{"rendered":"

Space is vast. A trip to the Moon – our neighbour in space \u2013 will take three days using normal chemical rockets. Journeys to Mars, the asteroids and the outer […]<\/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\/11\/smart-1_showing_off_ion_engine2\/17872705-2-eng-GB\/SMART-1_showing_off_ion_engine.jpg","esa_banner_description":"SMART-1 showing off ion engine","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/11\/SMART-1_showing_off_ion_engine2","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":[62,10,13],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1139","post","type-post","status-publish","format-standard","hentry","category-exploration","category-learn","category-life-in-space","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/1139","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=1139"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/1139\/revisions"}],"predecessor-version":[{"id":2282,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/1139\/revisions\/2282"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=1139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=1139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=1139"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=1139"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=1139"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=1139"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=1139"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=1139"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=1139"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=1139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}