{"id":79328,"date":"2022-02-27T19:47:56","date_gmt":"2022-02-27T17:47:56","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=79328"},"modified":"2022-02-27T19:47:56","modified_gmt":"2022-02-27T17:47:56","slug":"va-fi-realizata-o-micro-sonda-spatiala-alimentata-cu-laser-pentru-a-ajunge-pana-la-steaua-proxima-centauri-in-doar-20-de-ani","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/va-fi-realizata-o-micro-sonda-spatiala-alimentata-cu-laser-pentru-a-ajunge-pana-la-steaua-proxima-centauri-in-doar-20-de-ani\/","title":{"rendered":"Va fi realizat\u0103 o &#8222;micro-sond\u0103&#8221; spa\u0163ial\u0103 alimentat\u0103 cu laser, pentru a ajunge p\u00e2n\u0103 la steaua Proxima Centauri \u00een doar 20 de ani!"},"content":{"rendered":"<p><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2022\/02\/lumina-Proxima-Centauri.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-79330\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2022\/02\/lumina-Proxima-Centauri.jpg\" alt=\"\" width=\"372\" height=\"245\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2022\/02\/lumina-Proxima-Centauri.jpg 372w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2022\/02\/lumina-Proxima-Centauri-300x198.jpg 300w\" sizes=\"auto, (max-width: 372px) 100vw, 372px\" \/><\/a>Cercet\u0103torii au propus o aeronav\u0103 cosmic\u0103 u\u015foar\u0103 care ar trebui s\u0103 poat\u0103 supravie\u021bui stresului unei c\u0103l\u0103torii interstelare. Ca parte a Ini\u021biativei NASA &#8222;Breakthrough Starshot Initiative&#8221;, inginerii din spatele acestui concept spun c\u0103 structura propus\u0103 ar putea rezista presiunilor imense ale luminii laser (\u0219i c\u0103ldurii) necesare pentru a le accelera cu 20% din viteza luminii. Navele spa\u0163iale actuale sunt complet impracticabile pentru c\u0103l\u0103torii c\u0103tre alte sisteme stelare, timpii de c\u0103l\u0103torie extinz\u00e2ndu-se pe zeci de mii de ani. \u00cen prezent, capacit\u0103\u021bile tehnologice necesare pentru proiectarea \u0219i construirea unor nave spa\u021biale ca \u00een serialul SF <strong><em>&#8222;Star Trek&#8221;<\/em><\/strong> nu sunt disponibile.<\/p>\n<p>Acum, un grup de cercet\u0103tori care lucreaz\u0103 la un concept de propulsie cu energie direc\u021bionat\u0103, care folose\u0219te o vel\u0103 u\u0219oar\u0103, spun\u00e2nd c\u0103 \u0219i-au dat seama cum s\u0103 gestioneze c\u0103ldura \u0219i stresul pe care le vor experimenta laserele care alimenteaz\u0103 navele. Pentru a aborda problemele legate de c\u0103ldur\u0103 \u0219i presiune care sunt de a\u0219teptat s\u0103 experimenteze o vel\u0103 u\u0219oar\u0103 alimentat\u0103 cu laser, o echip\u0103 condus\u0103 de Igor Bargatin, profesor asociat la Departamentul de Inginerie Mecanic\u0103 \u0219i Mecanic\u0103 Aplicat\u0103 de la Universitatea din Pennsylvania, s-a concentrat asupra materialelor \u0219i designului.<\/p>\n<p>Preocuparea principal\u0103 a echipei este c\u0103ldura \u0219i presiunea extrem\u0103 al laserelor care vor propulsa nava u\u0219oar\u0103 \u00een golul spa\u021biului cosmic\u0103. Dac\u0103 planificatorii viitoarelor misiuni Breakthrough Starshot sunt corecte, va fi nevoie de o serie de lasere puternice pentru a propulsa sonda de dimensiunea unui microcip p\u00e2n\u0103 la 20% din viteza luminii.<\/p>\n<p>Solu\u021bia cu care echipa a venit este acela al unui &#8222;design cu cristal fotonic&#8221;, potrivindu-se cu lungimea de und\u0103 a luminii care intr\u0103. Acest lucru ar permite microsondei s\u0103 radieze suficient\u0103 c\u0103ldur\u0103 \u00een spa\u021biul cosmic, pentru a evita topirea \u0219i dezintegrarea.<\/p>\n<p>Dac\u0103 vor reu\u015fi acest lucru, cu o asemenea structur\u0103 s-ar putea ajunge p\u00e2n\u0103 la cea mai apropiat\u0103 stea de noi, Proxima Centauri, \u00een circa 20 de ani.<\/p>\n<p><strong>Sursa<\/strong> (traducerea \u015fi adaptarea proprie): <a href=\"https:\/\/thedebrief.org\/light-sail-could-reach-proxima-centauri-in-20-years\/\" target=\"_blank\" rel=\"noopener\"><strong>thedebrief.org<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cercet\u0103torii au propus o aeronav\u0103 cosmic\u0103 u\u015foar\u0103 care ar trebui s\u0103 poat\u0103 supravie\u021bui stresului unei c\u0103l\u0103torii interstelare. Ca parte a Ini\u021biativei NASA &#8222;Breakthrough Starshot Initiative&#8221;, inginerii din spatele acestui concept spun c\u0103 structura propus\u0103 ar putea rezista presiunilor imense ale &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Va fi realizat\u0103 o &#8222;micro-sond\u0103&#8221; spa\u0163ial\u0103 alimentat\u0103 cu laser, pentru a ajunge p\u00e2n\u0103 la steaua Proxima Centauri \u00een doar 20 de ani!\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/va-fi-realizata-o-micro-sonda-spatiala-alimentata-cu-laser-pentru-a-ajunge-pana-la-steaua-proxima-centauri-in-doar-20-de-ani\/#more-79328\" aria-label=\"Cite\u0219te mai multe despre Va fi realizat\u0103 o &#8222;micro-sond\u0103&#8221; spa\u0163ial\u0103 alimentat\u0103 cu laser, pentru a ajunge p\u00e2n\u0103 la steaua Proxima Centauri \u00een doar 20 de ani!\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":79330,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11039],"tags":[102,17554,2671,1036,66,11307,2634,952,150,1324,5403,4490,2174,3644,733,2250,17555,2916],"class_list":["post-79328","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomie","tag-astronomie","tag-breakthrough-starshot-initiative","tag-caldura","tag-cristal","tag-energie","tag-ingineri","tag-laser","tag-lumina","tag-nasa","tag-nava-spatiala","tag-pennsylvania","tag-proxima-centauri","tag-sf","tag-star-trek","tag-stea","tag-universitate","tag-vela","tag-viteza-luminii","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Va fi realizat\u0103 o &quot;micro-sond\u0103&quot; spa\u0163ial\u0103 alimentat\u0103 cu laser, pentru a ajunge p\u00e2n\u0103 la steaua Proxima Centauri \u00een doar 20 de ani! - Secretele lui Lovendal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lovendal.ro\/wp52\/va-fi-realizata-o-micro-sonda-spatiala-alimentata-cu-laser-pentru-a-ajunge-pana-la-steaua-proxima-centauri-in-doar-20-de-ani\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Va fi realizat\u0103 o &quot;micro-sond\u0103&quot; spa\u0163ial\u0103 alimentat\u0103 cu laser, pentru a ajunge p\u00e2n\u0103 la steaua Proxima Centauri \u00een doar 20 de ani!\" \/>\n<meta property=\"og:description\" content=\"Cercet\u0103torii au propus o aeronav\u0103 cosmic\u0103 u\u015foar\u0103 care ar trebui s\u0103 poat\u0103 supravie\u021bui stresului unei c\u0103l\u0103torii interstelare. 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- Secretele lui Lovendal","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.lovendal.ro\/wp52\/va-fi-realizata-o-micro-sonda-spatiala-alimentata-cu-laser-pentru-a-ajunge-pana-la-steaua-proxima-centauri-in-doar-20-de-ani\/","og_locale":"ro_RO","og_type":"article","og_title":"Va fi realizat\u0103 o \"micro-sond\u0103\" spa\u0163ial\u0103 alimentat\u0103 cu laser, pentru a ajunge p\u00e2n\u0103 la steaua Proxima Centauri \u00een doar 20 de ani!","og_description":"Cercet\u0103torii au propus o aeronav\u0103 cosmic\u0103 u\u015foar\u0103 care ar trebui s\u0103 poat\u0103 supravie\u021bui stresului unei c\u0103l\u0103torii interstelare. 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