{"id":35066,"date":"2014-07-16T12:07:54","date_gmt":"2014-07-16T09:07:54","guid":{"rendered":"http:\/\/www.lovendal.ro\/wp52\/?p=35066"},"modified":"2014-07-16T12:50:13","modified_gmt":"2014-07-16T09:50:13","slug":"ar-putea-fi-construite-trenuri-maglev-cu-levitatie-magnetica-care-sa-atinga-fantastica-viteza-de-2900-kmh-da-dar-ar-fi-extrem-de-costisitoare","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/ar-putea-fi-construite-trenuri-maglev-cu-levitatie-magnetica-care-sa-atinga-fantastica-viteza-de-2900-kmh-da-dar-ar-fi-extrem-de-costisitoare\/","title":{"rendered":"Ar putea fi construite trenuri Maglev cu &#8222;levita\u0163ie magnetic\u0103&#8221; care s\u0103 ating\u0103 fantastica vitez\u0103 de 2900 km\/h? Da, dar ar fi extrem de costisitoare!"},"content":{"rendered":"<p><span id=\"result_box\" lang=\"ro\"><span class=\"hps\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-35067\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2014\/07\/trenuri-Maglev.jpg\" alt=\"trenuri Maglev\" width=\"330\" height=\"206\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2014\/07\/trenuri-Maglev.jpg 330w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2014\/07\/trenuri-Maglev-300x187.jpg 300w\" sizes=\"auto, (max-width: 330px) 100vw, 330px\" \/>Trenurile<\/span> <span class=\"hps\">care utilizeaz\u0103<\/span> <span class=\"hps\">magne\u021bi<\/span> <span class=\"hps\">pentru a<\/span> <span class=\"hps\">levita<\/span> <span class=\"hps\">deasupra \u015finelor ne-ar aduce aminte de un film SF,<\/span> <span class=\"hps\">dar<\/span> <span class=\"hps\">conceptul de<\/span> <span class=\"hps\">levita\u0163ie magnetic\u0103<\/span> este opera\u0163ional <span class=\"hps\">de<\/span> <span class=\"hps\">mul\u021bi ani<\/span>. <span class=\"hps\">Trenurile<\/span> <span class=\"hps\">Maglev<\/span>, <span class=\"hps\">care folosesc<\/span> <span class=\"hps\">aceast\u0103<\/span> <span class=\"hps\">tehnologie<\/span>, <span class=\"hps\">s-au<\/span> <span class=\"hps\">dezvoltat pentru prima oar\u0103<\/span> <span class=\"hps\">\u00een<\/span> <span class=\"hps\">anii 1960<\/span> <span class=\"hps\">\u0219i<\/span> de atunci mai <span class=\"hps\">multe metode<\/span> <span class=\"hps\">diferite au fost<\/span> <span class=\"hps\">dezvoltate, pentru a<\/span> &#8222;elibera&#8221; <span class=\"hps\">trenurile<\/span> <span class=\"hps\">de leg\u0103tura lor cu p\u0103m\u00e2ntul,<\/span> <span class=\"hps\">ro\u021bile<\/span>.<\/span><\/p>\n<p><span class=\"hps\">Trenurile<\/span> <span class=\"hps\">Maglev<\/span> dep\u0103\u015fesc <span class=\"hps\">dou\u0103<\/span> <span class=\"hps\">dintre limit\u0103rile<\/span> pe care le au <span class=\"hps\">trenurile<\/span> <span class=\"hps\">conven\u021bionale<\/span>. <span class=\"hps\">\u00cen primul r\u00e2nd<\/span>, <span class=\"hps\">contactul<\/span> <span class=\"hps\">mecanic<\/span> pe <span class=\"hps\">care<\/span> \u00eel au <span class=\"hps\">trenurile<\/span> <span class=\"hps\">conven\u021bionale<\/span> <span class=\"hps\">\u00eentre<\/span> <span class=\"hps\">ro\u021bile<\/span> <span class=\"hps\">\u0219i<\/span> <span class=\"hps\">\u0219ine<\/span> <span class=\"hps\">le<\/span> \u00ee<span class=\"hps\">ncetine\u015fte viteza<\/span>. <span class=\"hps\">\u00cen al doilea r\u00e2nd<\/span>, <span class=\"hps\">trenurile merg \u015fi fr\u00e2neaz\u0103<\/span> <span class=\"hps\">prin intermediul acestui<\/span> <span class=\"hps\">contact mecanic<\/span> <span class=\"hps\">\u0219i<\/span>, prin urmare, <span class=\"hps\">trebuie s\u0103<\/span> existe <span class=\"hps\">echipamente<\/span> <span class=\"hps\">de propulsie<\/span> <span class=\"hps\">la<\/span> <span class=\"hps\">bord<\/span>. <span class=\"hps\">Aceste 2 lucruri\u00a0<\/span><span class=\"hps\">limiteaz\u0103 viteza trenurilor conven\u0163ionale la maximum\u00a0<\/span><span class=\"hps\">400 kilometri pe or\u0103<\/span> <span class=\"hps atn\">(<\/span>viteza propus\u0103 pentru <span class=\"hps\">linia britanic\u0103<\/span> <span class=\"hps\">HS2<\/span>), iar c<span class=\"hps\">antitatea de<\/span> <span class=\"hps\">energie necesar\u0103<\/span> <span class=\"hps\">cre\u0219te \u00een mod exponen\u021bial<\/span> <span class=\"hps\">\u00een func\u021bie de<\/span> <span class=\"hps\">viteza vehiculului<\/span>. <span class=\"hps\">De<\/span> <span class=\"hps\">exemplu<\/span>, un tren <span class=\"hps\">care merge cu<\/span> <span class=\"hps\">400 kilometri pe or\u0103<\/span> <span class=\"hps\">\u00een loc de<\/span> <span class=\"hps\">300 km\/h<\/span> <span class=\"hps\">are nevoie<\/span> <span class=\"hps\">de aproape<\/span> <span class=\"hps\">dou\u0103 ori \u0219i jum\u0103tate<\/span> <span class=\"hps\">mai mult\u0103<\/span> <span class=\"hps\">putere de propulsie<\/span>.<\/p>\n<p><strong><span class=\"hps\">Magia trenurilor Maglev<\/span><\/strong><\/p>\n<p><span class=\"hps\">Toate tehnologiile<\/span> <span class=\"hps\">Maglev<\/span> <span class=\"hps\">folosesc<\/span> <span class=\"hps\">o form\u0103 de<\/span> <span class=\"hps\">magnet<\/span> <span class=\"hps\">&#8211;<\/span> <span class=\"hps\">acest lucru ar putea<\/span> <span class=\"hps\">fi<\/span> <span class=\"hps\">un<\/span> <span class=\"hps\">magnet<\/span> <span class=\"hps\">permanent<\/span>, <span class=\"hps\">un<\/span> <span class=\"hps\">electromagnet<\/span> <span class=\"hps\">sau<\/span> <span class=\"hps\">un<\/span> <span class=\"hps\">magnet<\/span> folosind <span class=\"hps\">o<\/span> <span class=\"hps\">bobin\u0103<\/span> <span class=\"hps\">supraconductoare<\/span>. <span class=\"hps\">Trenul<\/span> &#8222;<span class=\"hps\">plute\u015fte&#8221;<\/span> <span class=\"hps\">deasupra<\/span> <span class=\"hps\">acest<\/span> <span class=\"hps\">c\u00e2mp magnetic<\/span> <span class=\"hps\">\u0219i<\/span> i <span class=\"hps\">se acord\u0103<\/span> <span class=\"hps\">sprijinul \u0219i<\/span> <span class=\"hps\">\u00eendrumarea<\/span> <span class=\"hps\">din interactiunea<\/span> <span class=\"hps\">care are loc<\/span> <span class=\"hps\">\u00eentre<\/span> <span class=\"hps\">magnet<\/span> <span class=\"hps\">\u0219i<\/span> <span class=\"hps\">un alt<\/span> <span class=\"hps\">element de<\/span> <span class=\"hps\">pe p\u0103m\u00e2nt<\/span>, <span class=\"hps\">cum ar fi o<\/span> <span class=\"hps\">pies\u0103<\/span> <span class=\"hps\">de o\u021bel<\/span>, <span class=\"hps\">un<\/span> <span class=\"hps\">element conductor din \u015fin\u0103 <\/span> <span class=\"hps\">sau<\/span> <span class=\"hps\">un alt<\/span> <span class=\"hps\">magnet<\/span>. <span class=\"hps\">Eliminarea<\/span> <span class=\"hps\">contactului mecanic<\/span> <span class=\"hps\">direct<\/span> <span class=\"hps\">poate duce la viteze<\/span> foarte <span class=\"hps\">mari<\/span>.<\/p>\n<p><span class=\"hps\">\u00cen ciuda<\/span> <span class=\"hps\">variet\u0103\u0163ii<\/span> <span class=\"hps\">conceptului<\/span> <span class=\"hps\">Maglev,<\/span> <span class=\"hps\">exist\u0103 dou\u0103<\/span> <span class=\"hps\">tipuri obi\u0219nuite de trenuri Maglev<\/span>. <span class=\"hps\">Primul<\/span> <span class=\"hps\">este cunoscut ca<\/span> <span class=\"hps\">sistemul<\/span> <span class=\"hps\">electromagnetic<\/span> <span class=\"hps atn\">(<\/span>EMS), <span class=\"hps\">pentru c\u0103<\/span> <span class=\"hps\">are<\/span> <span class=\"hps\">un electromagnet<\/span> care <span class=\"hps\">furnizeaz\u0103<\/span> <span class=\"hps\">for\u021ba de atrac\u021bie<\/span> <span class=\"hps\">unei \u0219ine<\/span> <span class=\"hps\">de o\u021bel<\/span>. <span class=\"hps\">Al doilea<\/span> <span class=\"hps\">este cunoscut ca<\/span> <span class=\"hps\">sistemul<\/span> <span class=\"hps\">electrodinamic<\/span> <span class=\"hps atn\">(<\/span>EDS), c\u0103ci <span class=\"hps\">utilizeaz\u0103 un magnet<\/span> <span class=\"hps\">puternic<\/span> care <span class=\"hps\">interac\u021bioneaz\u0103 cu<\/span> <span class=\"hps\">o<\/span> <span class=\"hps\">bobin\u0103<\/span> <span class=\"hps\">sau<\/span> <span class=\"hps\">foaie de aluminiu<\/span>, aflate sub el. <span class=\"hps\">\u00cen cazul \u00een care<\/span> <span class=\"hps\">magnetul<\/span> <span class=\"hps\">se deplaseaz\u0103<\/span> <span class=\"hps\">de-a lungul<\/span> <span class=\"hps\">c\u0103ii ferate,<\/span> <span class=\"hps\">este generat\u0103<\/span> <span class=\"hps\">o<\/span> <span class=\"hps\">for\u021b\u0103<\/span> <span class=\"hps\">de<\/span> <span class=\"hps\">repulsie<\/span>, <span class=\"hps\">iar vehiculul<\/span> <span class=\"hps\">se ridic\u0103<\/span> <span class=\"hps\">la c\u00e2\u021biva centimetri<\/span> <span class=\"hps\">deasupra<\/span> <span class=\"hps\">\u015finei<\/span>, <span class=\"hps\">dar<\/span> <span class=\"hps\">numai<\/span> <span class=\"hps\">atunci c\u00e2nd se deplaseaz\u0103<\/span> <span class=\"hps\">cu o vitez\u0103<\/span> <span class=\"hps\">foarte mare<\/span>, astfel \u00eenc\u00e2t <span class=\"hps\">ro\u021bile sunt<\/span> <span class=\"hps\">\u00eenc\u0103<\/span> <span class=\"hps\">necesare<\/span> <span class=\"hps\">la viteze mici<\/span>. <span class=\"hps\">Desigur,<\/span> accelerarea \u015fi<span class=\"hps\"> fr\u00e2narea<\/span> <span class=\"hps\">vehiculelor<\/span> M<span class=\"hps\">aglev<\/span> <span class=\"hps\">este<\/span> <span class=\"hps\">\u00eenc\u0103<\/span> <span class=\"hps\">necesar\u0103<\/span>, <span class=\"hps\">care<\/span> <span class=\"hps\">se realizeaz\u0103<\/span>, de asemenea, <span class=\"hps\">prin<\/span> <span class=\"hps\">efecte<\/span> <span class=\"hps\">magnetice<\/span>. Dar, pentru a atinge viteze mari, pe \u015fine sunt montate bobine, <span class=\"hps\">acestea fiind folosite<\/span> <span class=\"hps\">pentru a<\/span> <span class=\"hps\">crea<\/span> <span class=\"hps\">un<\/span> <span class=\"hps\">c\u00e2mp magnetic<\/span> <span class=\"hps\">de c\u0103l\u0103torie,<\/span> <span class=\"hps\">care<\/span> <span class=\"hps\">trage<\/span> <span class=\"hps\">vehiculul \u00eempreun\u0103 cu<\/span> <span class=\"hps\">magne\u021bi<\/span>i s\u0103i. <span class=\"hps\">Prin urmare,<\/span> <span class=\"hps\">nu mai este<\/span> <span class=\"hps\">necesar\u0103 o cantitate mare de energie pentru a se atinge viteze mai mari. <\/span><\/p>\n<p><span id=\"result_box\" lang=\"ro\">Trenul Shanghai <span class=\"hps\">Maglev<\/span> <span class=\"hps\">EMS<\/span> <span class=\"hps\">func\u021bioneaz\u0103 \u00een mod regulat<\/span> <span class=\"hps\">la viteza de 430<\/span> <span class=\"hps\">km\/h,<\/span> <span class=\"hps\">iar<\/span> <span class=\"hps\">un<\/span> <span class=\"hps\">prototip<\/span> <span class=\"hps\">japonez,\u00a0<\/span><span class=\"hps\">JR<\/span> <span class=\"hps\">Central<\/span> E<span class=\"hps\">DS<\/span> <span class=\"hps\">Maglev<\/span> <span class=\"hps\">poate rula<\/span> cu<span class=\"hps\"> mai mult de<\/span> <span class=\"hps\">500 kilometri pe or\u0103<\/span>. <span class=\"hps\">Exist\u0103<\/span> chiar <span class=\"hps\">tehnologii<\/span> <span class=\"hps\">Maglev<\/span> care pot <span class=\"hps\">\u00eempinge<\/span> <span class=\"hps\">viteza p\u00e2n\u0103<\/span> <span class=\"hps\">la aproximativ<\/span> <span class=\"hps\">600 kilometri pe or\u0103<\/span>.<\/span><\/p>\n<p><strong><span class=\"hps\">Realitatea<\/span> este <span class=\"hps\">costisitoare<\/span> <\/strong><\/p>\n<p><span class=\"hps\">Dar, pentru ca trenurile s\u0103 treac\u0103 de vi<\/span><span class=\"hps\">teze de<\/span> <span class=\"hps\">peste<\/span> <span class=\"hps\">1000 kilometri pe or\u0103<\/span> <span class=\"hps\">nu<\/span> <span class=\"hps\">este<\/span> <span class=\"hps\">la fel de simplu<\/span> <span class=\"hps\">ca \u0219i<\/span> <span class=\"hps\">teoria<\/span>. <span class=\"hps\">Chiar trenurile<\/span> <span class=\"hps\">Maglev<\/span> <span class=\"hps\">trebuie s\u0103 se confrunte<\/span> <span class=\"hps\">cu<\/span> <span class=\"hps\">aerodinamica<\/span>. <span class=\"hps\">Acesta este motivul pentru<\/span> care <span class=\"hps\">viteze<\/span> <span class=\"hps\">mai mari<\/span> <span class=\"hps\">au fost<\/span> <span class=\"hps\">postulate<\/span> <span class=\"hps\">de c\u0103tre<\/span> <span class=\"hps\">antreprenorul<\/span> <span class=\"hps\">american<\/span> <span class=\"hps\">Elon Musk<\/span>, \u00een <span class=\"hps\">conceptul<\/span> <span class=\"hps\">s\u0103u<\/span> <span class=\"hps\">Hyperloop<\/span> <span class=\"hps atn\">(<\/span>1,500 kilometri pe or\u0103), precum \u0219i de c\u0103tre proiectul <span class=\"hps\">chinez<\/span> <span class=\"hps atn\">&#8222;<\/span>Super <span class=\"hps\">Maglev<\/span>&#8221; <span class=\"hps atn\">(<\/span>2900 kmh), care <span class=\"hps\">propun\u00a0<\/span> <span class=\"hps\">rularea vehiculelor<\/span> <span class=\"hps\">\u00eentr-un tub<\/span> <span class=\"hps\">par\u021bial<\/span> <span class=\"hps\">evacuat,<\/span> <span class=\"hps\">pentru a<\/span> <span class=\"hps\">reduce for\u021bele<\/span> <span class=\"hps\">de frecare <\/span><span class=\"hps\">\u00eempotriva lor<\/span>. <span class=\"hps\">Prin urmare, aceste<\/span> <span class=\"hps\">viteze mari<\/span> <span class=\"hps\">depind de<\/span> <span class=\"hps\">capacitatea de a<\/span> <span class=\"hps\">construi<\/span> <span class=\"hps\">\u0219i<\/span> <span class=\"hps\">men\u021bine<\/span> <span class=\"hps\">un<\/span> <span class=\"hps\">ghidaj<\/span> <span class=\"hps\">aliniat<\/span> <span class=\"hps\">foarte<\/span> <span class=\"hps\">precis<\/span>, <span class=\"hps atn\">\u00eentr-<\/span>un <span class=\"hps\">tub de presiune<\/span> <span class=\"hps\">joas\u0103,<\/span> <span class=\"hps\">pe sute de<\/span> <span class=\"hps\">kilometri<\/span>. <span class=\"hps\">Acest lucru nu numai c\u0103 este\u00a0<\/span><span class=\"hps\">foarte dificil<\/span>, dar <span class=\"hps\">\u0219i<\/span> <span class=\"hps\">foarte<\/span> <span class=\"hps\">costisitor<\/span>. Totu\u015fi, doar investi\u0163ia ini\u0163ial\u0103 ar fi scump\u0103, c\u0103ci \u00eentr-un asemenea sistem costurile ar fi mai mici cu 90% fa\u0163\u0103 de <span class=\"hps\">un<\/span> <span class=\"hps\">sistem de<\/span> <span class=\"hps\">transport feroviar<\/span> obi\u015fnuit <span class=\"hps\">de mare vitez\u0103<\/span>.<\/p>\n<p>Din p\u0103cate, aceste tehnologii nu cred c\u0103 vor fi disponibile prea cur\u00e2nd&#8230; \u015ei asta pentru c\u0103 guvernele lumii prefer\u0103 s\u0103 cheltuie bani pe armament pentru a ne omor\u00ee \u00eentre noi, \u00een loc s\u0103 investim bani \u00een infrastructur\u0103 ultraperformant\u0103&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trenurile care utilizeaz\u0103 magne\u021bi pentru a levita deasupra \u015finelor ne-ar aduce aminte de un film SF, dar conceptul de levita\u0163ie magnetic\u0103 este opera\u0163ional de mul\u021bi ani. Trenurile Maglev, care folosesc aceast\u0103 tehnologie, s-au dezvoltat pentru prima oar\u0103 \u00een anii 1960 &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Ar putea fi construite trenuri Maglev cu &#8222;levita\u0163ie magnetic\u0103&#8221; care s\u0103 ating\u0103 fantastica vitez\u0103 de 2900 km\/h? Da, dar ar fi extrem de costisitoare!\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/ar-putea-fi-construite-trenuri-maglev-cu-levitatie-magnetica-care-sa-atinga-fantastica-viteza-de-2900-kmh-da-dar-ar-fi-extrem-de-costisitoare\/#more-35066\" aria-label=\"Cite\u0219te mai multe despre Ar putea fi construite trenuri Maglev cu &#8222;levita\u0163ie magnetic\u0103&#8221; care s\u0103 ating\u0103 fantastica vitez\u0103 de 2900 km\/h? Da, dar ar fi extrem de costisitoare!\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":35067,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2833,106],"tags":[2854,6130,2175,1662,446,8334,4464,8336,7909,4559,8329,8335,9803,8333,1840],"class_list":["post-35066","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noutati","category-stiinta","tag-arme","tag-bobina","tag-cale-ferata","tag-camp-magnetic","tag-china","tag-franare","tag-guvern","tag-hyperloop","tag-magnet","tag-roata","tag-shanghai","tag-sina","tag-stiinta","tag-tren-maglev","tag-viteza","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>Ar putea fi construite trenuri Maglev cu &quot;levita\u0163ie magnetic\u0103&quot; care s\u0103 ating\u0103 fantastica vitez\u0103 de 2900 km\/h? Da, dar ar fi extrem de costisitoare! - 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\/ar-putea-fi-construite-trenuri-maglev-cu-levitatie-magnetica-care-sa-atinga-fantastica-viteza-de-2900-kmh-da-dar-ar-fi-extrem-de-costisitoare\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ar putea fi construite trenuri Maglev cu &quot;levita\u0163ie magnetic\u0103&quot; care s\u0103 ating\u0103 fantastica vitez\u0103 de 2900 km\/h? Da, dar ar fi extrem de costisitoare!\" \/>\n<meta property=\"og:description\" content=\"Trenurile care utilizeaz\u0103 magne\u021bi pentru a levita deasupra \u015finelor ne-ar aduce aminte de un film SF, dar conceptul de levita\u0163ie magnetic\u0103 este opera\u0163ional de mul\u021bi ani. 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