{"id":14335,"date":"2025-04-12T19:59:20","date_gmt":"2025-04-12T16:59:20","guid":{"rendered":"https:\/\/diagnozabam.ro\/sfaturi\/?p=14335"},"modified":"2026-09-15T09:52:05","modified_gmt":"2026-09-15T06:52:05","slug":"cum-functioneaza-o-racheta-spatiala","status":"publish","type":"post","link":"https:\/\/diagnozabam.ro\/sfaturi\/ro\/blog\/cum-functioneaza-o-racheta-spatiala\/","title":{"rendered":"Cum Func\u021bioneaz\u0103 o Rachet\u0103 Spa\u021bial\u0103: Fizica Real\u0103"},"content":{"rendered":"

Cum func\u021bioneaz\u0103 o rachet\u0103 spa\u021bial\u0103: fizica din spatele fiec\u0103rei lans\u0103ri<\/h2>\n

O rachet\u0103 spa\u021bial\u0103 pare, la prima vedere, un turn metalic care scuip\u0103 foc \u0219i dispare \u00een cer. \u00cen realitate, fiecare lansare este rezultatul unui echilibru extrem de fin \u00eentre fizic\u0103, chimie \u0219i inginerie de precizie. Nu e magie. Sunt legi ale mi\u0219c\u0103rii aplicate la o scar\u0103 care dep\u0103\u0219e\u0219te intui\u021bia uman\u0103.<\/p>\n

\u00cen acest ghid trecem prin fiecare etap\u0103 real\u0103 a func\u021bion\u0103rii unei rachete: de la principiul fizic care o ridic\u0103 de pe ramp\u0103, p\u00e2n\u0103 la ce se \u00eent\u00e2mpl\u0103 cu ea dup\u0103 ce misiunea s-a \u00eencheiat.<\/p>\n

\n

Principiul de baz\u0103: ac\u021biune \u0219i reac\u021biune<\/h2>\n

Orice rachet\u0103 func\u021bioneaz\u0103 pe baza legii a treia a lui Newton: pentru fiecare ac\u021biune exist\u0103 o reac\u021biune egal\u0103 \u0219i opus\u0103.<\/p>\n

Motorul arde combustibil \u0219i expulzeaz\u0103 gaze fierbin\u021bi printr-o duz\u0103, cu vitez\u0103 foarte mare, \u00een jos. Reac\u021biunea acestei expulz\u0103ri \u00eempinge racheta \u00een direc\u021bia opus\u0103, \u00een sus.<\/p>\n

Nu este nevoie de aer pentru ca acest principiu s\u0103 func\u021bioneze. De fapt, racheta este mai eficient\u0103 \u00een vid, pentru c\u0103 nu \u00eent\u00e2mpin\u0103 rezisten\u021b\u0103 aerodinamic\u0103 asupra jetului de gaze. Asta explic\u0103 de ce rachetele func\u021bioneaz\u0103 perfect \u00een spa\u021biu, unde nu exist\u0103 atmosfer\u0103.<\/p>\n

\n

\u2139\ufe0f Not\u0103 tehnic\u0103:<\/strong> for\u021ba generat\u0103 de un motor de rachet\u0103 se nume\u0219te for\u021b\u0103 de trac\u021biune<\/strong> (thrust) \u0219i se m\u0103soar\u0103 \u00een newtoni sau kilonewtoni. Un motor Merlin folosit de SpaceX produce aproximativ 845 kN la nivelul m\u0103rii.<\/p>\n<\/blockquote>\n

De ce nu e suficient\u0103 doar for\u021ba brut\u0103<\/h3>\n

O rachet\u0103 nu se ridic\u0103 doar pentru c\u0103 motorul e puternic. Conteaz\u0103 raportul dintre for\u021ba de trac\u021biune \u0219i masa total\u0103 a rachetei (combustibil inclus). Dac\u0103 for\u021ba nu dep\u0103\u0219e\u0219te greutatea rachetei, aceasta r\u0103m\u00e2ne pe ramp\u0103.<\/p>\n

Pe m\u0103sur\u0103 ce combustibilul arde, masa scade rapid, iar accelera\u021bia cre\u0219te \u2014 chiar dac\u0103 for\u021ba motorului r\u0103m\u00e2ne constant\u0103. De aceea o rachet\u0103 pleac\u0103 lent de pe ramp\u0103 \u0219i accelereaz\u0103 vizibil mai repede dup\u0103 primele minute de zbor.<\/p>\n

\n

Anatomia unei rachete<\/h2>\n

O rachet\u0103 modern\u0103 cu mai multe trepte are, structural, acelea\u0219i componente esen\u021biale, indiferent de produc\u0103tor:<\/p>\n

\n
\n
<\/div>\n<\/div>\n
\n
                 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n                 \u2502   FAIRING   \u2502  \u2190 carenaj protector (payload)\r\n                 \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n                 \u2502   PAYLOAD   \u2502  \u2190 satelit \/ capsul\u0103 \/ sond\u0103\r\n                 \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n                 \u2502  TREAPTA 2  \u2502  \u2190 rezervor + motor vacuum\r\n                 \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n                 \u2502  TREAPTA 1  \u2502  \u2190 rezervor + motoare principale\r\n                 \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n                 \u2502   MOTOARE   \u2502  \u2190 duze + camere de ardere\r\n                 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/code><\/pre>\n<\/div>\n<\/div>\n
    \n
  • Fairing<\/strong> \u2014 carenajul care protejeaz\u0103 payload-ul de for\u021bele aerodinamice \u0219i de c\u0103ldur\u0103 \u00een timpul travers\u0103rii atmosferei; se separ\u0103 la altitudine mare, unde atmosfera e prea rarefiat\u0103 s\u0103 mai afecteze payload-ul.<\/li>\n
  • Payload<\/strong> \u2014 \u00eenc\u0103rc\u0103tura util\u0103: satelit, capsul\u0103 cu echipaj, sond\u0103 interplanetar\u0103.<\/li>\n
  • Rezervoarele de combustibil<\/strong> \u2014 ocup\u0103 cea mai mare parte din volumul rachetei; combustibilul reprezint\u0103 de regul\u0103 peste 85% din masa total\u0103 la lansare.<\/li>\n
  • Motoarele<\/strong> \u2014 camera de ardere, unde combustibilul reac\u021bioneaz\u0103 cu oxidantul, \u0219i duza, care accelereaz\u0103 gazele rezultate la viteze supersonice.<\/li>\n
  • Sistemul de ghidaj<\/strong> \u2014 computer de bord, senzori iner\u021biali \u0219i GPS, care ajusteaz\u0103 constant direc\u021bia de zbor.<\/li>\n<\/ul>\n
    \n
    Combustibilul: ce alimenteaz\u0103 o rachet\u0103<\/h2>\n
    Exist\u0103 trei categorii principale de propulsie chimic\u0103 folosite ast\u0103zi.<\/p>\n
    \n\n\n\n\n\n\n\n
    Tip combustibil<\/th>\nExemple<\/th>\nAvantaje<\/th>\nDezavantaje<\/th>\n<\/tr>\n<\/thead>\n
    Solid<\/strong><\/td>\npropergol compozit (rachete militare, boostere Space Shuttle)<\/td>\nsimplu, robust, se depoziteaz\u0103 ani \u00eentregi<\/td>\nodat\u0103 aprins, nu poate fi oprit sau reglat<\/td>\n<\/tr>\n
    Lichid<\/strong><\/td>\nkerosen (RP-1) + oxigen lichid, sau hidrogen lichid + oxigen lichid<\/td>\npoate fi oprit\/pornit, reglabil \u00een timp real, eficien\u021b\u0103 mare<\/td>\nrezervoare complexe, sisteme criogenice costisitoare<\/td>\n<\/tr>\n
    Hibrid<\/strong><\/td>\ncombustibil solid + oxidant lichid<\/td>\nmai sigur dec\u00e2t solidul pur, par\u021bial reglabil<\/td>\nfolosit deocamdat\u0103 doar \u00een proiecte experimentale\/suborbitale<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
    Majoritatea rachetelor orbitale moderne (Falcon 9, Ariane, Soyuz) folosesc combustibil lichid pentru treapta principal\u0103, exact pentru c\u0103 ofer\u0103 control fin al trac\u021biunii. Unele configura\u021bii (precum Ariane 5 sau vechiul Space Shuttle) adaug\u0103 boostere solide laterale pentru un impuls suplimentar la decolare, care apoi se separ\u0103 \u0219i cad.<\/p>\n
    \n
    \u26a0\ufe0f ATEN\u021aIE:<\/strong> un motor cu combustibil solid nu poate fi oprit dup\u0103 aprindere. Este motivul pentru care rachetele cu echipaj uman evit\u0103 combustibilul solid pentru treptele principale \u2014 lipsa controlului \u00een caz de anomalie cre\u0219te riscul.<\/p>\n<\/blockquote>\n
    \n
    Ecua\u021bia care guverneaz\u0103 totul: Tsiolkovsky<\/h2>\n
    Randamentul unei rachete este descris de ecua\u021bia rachetei, formulat\u0103 de Konstantin Tsiolkovsky la \u00eenceputul secolului XX. \u00cen cuvinte, nu \u00een formul\u0103:<\/p>\n
    Viteza pe care o poate atinge racheta depinde de viteza gazelor evacuate din duz\u0103, \u00eenmul\u021bit\u0103 cu logaritmul raportului dintre masa ini\u021bial\u0103 (plin\u0103 cu combustibil) \u0219i masa final\u0103 (goal\u0103, dup\u0103 consum).<\/strong><\/p>\n
    Practic, conteaz\u0103 trei lucruri:<\/p>\n
      \n
    • viteza de evacuare a gazelor<\/strong> \u2014 cu c\u00e2t motorul expulzeaz\u0103 gazele mai rapid, cu at\u00e2t racheta e mai eficient\u0103;<\/li>\n
    • masa ini\u021bial\u0103<\/strong> \u2014 racheta plin\u0103, cu tot combustibilul la bord;<\/li>\n
    • masa final\u0103<\/strong> \u2014 racheta goal\u0103, dup\u0103 ce a ars tot combustibilul.<\/li>\n<\/ul>\n
      Rela\u021bia nu e liniar\u0103, ci logaritmic\u0103: fiecare kilometru pe secund\u0103 \u00een plus de vitez\u0103 cost\u0103 din ce \u00een ce mai mult combustibil. Concluzia practic\u0103: masa combustibilului cre\u0219te exponen\u021bial cu viteza dorit\u0103. De aceea rachetele sunt, structural, aproape \u00een \u00eentregime rezervoare de combustibil \u2014 corpul solid, util, este doar o mic\u0103 parte din masa total\u0103.<\/p>\n
      \n
      De ce sunt necesare mai multe trepte<\/h2>\n
      O rachet\u0103 cu o singur\u0103 treapt\u0103 ar trebui s\u0103 care, tot zborul, motoarele \u0219i rezervoarele goale ale unei treapt\u0103 folosite deja \u2014 mas\u0103 moart\u0103 care consum\u0103 combustibil inutil.<\/p>\n
      Separarea \u00een trepte rezolv\u0103 aceast\u0103 problem\u0103:<\/p>\n
        \n
      1. Treapta 1<\/strong> ofer\u0103 cea mai mare for\u021b\u0103, pentru a \u00eenvinge gravita\u021bia \u0219i rezisten\u021ba aerului din atmosfera dens\u0103 de jos.<\/li>\n
      2. La epuizarea combustibilului din treapta 1, aceasta se separ\u0103 \u0219i cade \u2014 racheta devine brusc mai u\u0219oar\u0103.<\/li>\n
      3. Treapta 2<\/strong>, optimizat\u0103 pentru vid (duz\u0103 mai lung\u0103, motor mai eficient la altitudine), preia zborul \u0219i accelereaz\u0103 payload-ul p\u00e2n\u0103 la viteza orbital\u0103.<\/li>\n<\/ol>\n
        Acest moment de oprire a motorului principal se nume\u0219te MECO<\/strong> (Main Engine Cut-Off), iar punctul de presiune aerodinamic\u0103 maxim\u0103 din timpul urc\u0103rii \u2014 cel mai solicitant moment structural al zborului \u2014 se nume\u0219te Max-Q<\/strong>.<\/p>\n
        \n
        Etapele unei lans\u0103ri reale<\/h2>\n
          \n
        1. Countdown \u0219i aprindere<\/strong> \u2014 motoarele ating trac\u021biune maxim\u0103 \u00eenainte de eliberarea rachetei de pe ramp\u0103, pentru a confirma func\u021bionarea corect\u0103.<\/li>\n
        2. Decolare<\/strong> \u2014 racheta p\u0103r\u0103se\u0219te rampa \u00een momentul \u00een care trac\u021biunea dep\u0103\u0219e\u0219te greutatea total\u0103.<\/li>\n
        3. Gravity turn<\/strong> \u2014 racheta \u00ee\u0219i \u00eenclin\u0103 treptat traiectoria dintr-un zbor vertical c\u0103tre unul aproape orizontal, pentru a construi viteza lateral\u0103 necesar\u0103 orbitei, nu doar altitudine.<\/li>\n
        4. Max-Q<\/strong> \u2014 punctul de stres aerodinamic maxim, la c\u00e2teva zeci de secunde de la lansare.<\/li>\n
        5. Separarea treptelor<\/strong> \u2014 treapta epuizat\u0103 se deta\u0219eaz\u0103, treapta urm\u0103toare se aprinde.<\/li>\n
        6. Separarea fairing-ului<\/strong> \u2014 carenajul cade odat\u0103 ce atmosfera e suficient de rarefiat\u0103.<\/li>\n
        7. Inser\u021bia orbital\u0103<\/strong> \u2014 motorul treptei finale se opre\u0219te la atingerea vitezei \u0219i altitudinii necesare orbitei stabilite.<\/li>\n<\/ol>\n
          \n
          Viteza necesar\u0103: cele trei viteze cosmice<\/h2>\n
          \n\n\n\n\n\n\n\n
          Viteza cosmic\u0103<\/th>\nValoare aproximativ\u0103<\/th>\nCe permite<\/th>\n<\/tr>\n<\/thead>\n
          I (orbital\u0103)<\/strong><\/td>\n~28.000 km\/h (7,9 km\/s)<\/td>\nmen\u021binerea unei orbite joase \u00een jurul P\u0103m\u00e2ntului<\/td>\n<\/tr>\n
          II (de evadare)<\/strong><\/td>\n~40.000 km\/h (11,2 km\/s)<\/td>\np\u0103r\u0103sirea complet\u0103 a gravita\u021biei terestre<\/td>\n<\/tr>\n
          III (de evadare solar\u0103)<\/strong><\/td>\n~150.000 km\/h (42,1 km\/s, m\u0103surat\u0103 de la P\u0103m\u00e2nt)<\/td>\np\u0103r\u0103sirea sistemului solar<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
          Pentru compara\u021bie, un glon\u021b de arm\u0103 de foc atinge \u00een jur de 1.200 km\/h. O rachet\u0103 orbital\u0103 trebuie s\u0103 dep\u0103\u0219easc\u0103 aceast\u0103 vitez\u0103 de peste 20 de ori doar pentru a r\u0103m\u00e2ne pe orbit\u0103, nu pentru a ajunge altundeva.<\/p>\n
          \n
          Ce se \u00eent\u00e2mpl\u0103 cu racheta dup\u0103 lansare<\/h2>\n
          Destinul unei rachete depinde de proiectare:<\/p>\n
            \n
          • Ardere\/dezintegrare controlat\u0103<\/strong> \u2014 majoritatea treptelor epuizate reintr\u0103 \u00een atmosfer\u0103 \u0219i ard, sau sunt direc\u021bionate spre zone oceanice nepopulate.<\/li>\n
          • Rachete reutilizabile<\/strong> \u2014 treapta 1 a rachetelor Falcon 9 reaprinde motoarele pentru fr\u00e2nare, apoi aterizeaz\u0103 vertical pe o platform\u0103 marin\u0103 sau pe uscat, folosind aripioare de grilaj pentru control aerodinamic.<\/li>\n
          • Resturi spa\u021biale<\/strong> \u2014 trepte sau componente r\u0103mase pe orbit\u0103, care nu reintr\u0103 ani sau decenii, contribuind la problema tot mai discutat\u0103 a resturilor spa\u021biale<\/strong> (space debris).<\/li>\n<\/ul>\n
            \n
            \u2139\ufe0f Not\u0103 tehnic\u0103:<\/strong> reutilizarea treptei 1 este motivul principal pentru care costul pe lansare al rachetelor moderne a sc\u0103zut semnificativ fa\u021b\u0103 de genera\u021biile anterioare de rachete de unic\u0103 folosin\u021b\u0103.<\/p>\n<\/blockquote>\n
            \n
            Concluzie<\/h2>\n
            O rachet\u0103 spa\u021bial\u0103 nu e altceva dec\u00e2t o aplica\u021bie extrem\u0103 a unei legi fizice simple: ac\u021biune \u0219i reac\u021biune. Complexitatea real\u0103 st\u0103 \u00een gestionarea masei, a combustibilului \u0219i a etapelor de zbor, astfel \u00eenc\u00e2t fiecare kilogram inutil s\u0103 fie eliminat c\u00e2t mai repede posibil. Ecua\u021bia lui Tsiolkovsky, separarea \u00een trepte \u0219i controlul fin al trac\u021biunii sunt motivele pentru care omenirea a reu\u0219it s\u0103 transforme un tub plin cu combustibil \u00eentr-un vehicul capabil s\u0103 ating\u0103 28.000 km\/h \u0219i s\u0103 p\u0103r\u0103seasc\u0103 atmosfera P\u0103m\u00e2ntului.<\/p>\n","protected":false},"excerpt":{"rendered":"
            Cum func\u021bioneaz\u0103 o rachet\u0103 spa\u021bial\u0103: fizica din spatele fiec\u0103rei lans\u0103ri O rachet\u0103 spa\u021bial\u0103 pare, la prima vedere, un turn metalic care scuip\u0103 foc \u0219i dispare \u00een cer. \u00cen realitate, fiecare lansare este rezultatul unui echilibru extrem de fin \u00eentre fizic\u0103, chimie \u0219i inginerie de precizie. Nu e magie. Sunt legi ale mi\u0219c\u0103rii aplicate la o […]<\/p>\n","protected":false},"author":1,"featured_media":14336,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[3283],"tags":[17858,6066],"class_list":["post-14335","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stiinta","tag-combustibil-racheta","tag-spacex"],"yoast_head":"\nCum Func\u021bioneaz\u0103 o Rachet\u0103 Spa\u021bial\u0103: Fizica Real\u0103 - DBAM<\/title>\n<meta name=\"description\" content=\"Propulsie, combustibil, trepte \u0219i viteze care sfideaz\u0103 gravita\u021bia. 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Starship reprezinta cea mai mare racheta construita vreodata, destinata misiunilor pe Luna, Marte si transportului orbital de mare capacitate. 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Haide s\u0103 vedem \u00eempreun\u0103! \ud83c\udf0d Ce sus\u021bin adep\u021bii teoriei \u201eP\u0103m\u00e2ntului Plat\u201d? S\u0103 fim sinceri... teoria\u2026","rel":"","context":"\u00cen \u201e\u0218tiri\u201d","block_context":{"text":"\u0218tiri","link":"https:\/\/diagnozabam.ro\/sfaturi\/ro\/category\/stiri\/"},"img":{"alt_text":"\ud83d\udef8 \u201eP\u0103m\u00e2ntul NU e plat!\u201d \u2013 Mituri spulberate cu dovezi","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/04\/%F0%9F%9B%B8-%E2%80%9EPamantul-NU-e-plat-%E2%80%93-Mituri-spulberate-cu-dovezi-1.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/04\/%F0%9F%9B%B8-%E2%80%9EPamantul-NU-e-plat-%E2%80%93-Mituri-spulberate-cu-dovezi-1.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/04\/%F0%9F%9B%B8-%E2%80%9EPamantul-NU-e-plat-%E2%80%93-Mituri-spulberate-cu-dovezi-1.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/04\/%F0%9F%9B%B8-%E2%80%9EPamantul-NU-e-plat-%E2%80%93-Mituri-spulberate-cu-dovezi-1.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/04\/%F0%9F%9B%B8-%E2%80%9EPamantul-NU-e-plat-%E2%80%93-Mituri-spulberate-cu-dovezi-1.webp?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/04\/%F0%9F%9B%B8-%E2%80%9EPamantul-NU-e-plat-%E2%80%93-Mituri-spulberate-cu-dovezi-1.webp?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":7169,"url":"https:\/\/diagnozabam.ro\/sfaturi\/ro\/blog\/entuziasmul-pentru-masinile-electrice-anunta-apocalipsa-petrolului-dar-europa-se-confrunta-cu-probleme-legate-de-infrastructura-de-incarcare-2\/","url_meta":{"origin":14335,"position":5},"title":"Entuziasmul pentru Ma\u0219inile Electrice Anun\u021b\u0103 Apocalipsa Petrolului, dar Europa Se Confrunt\u0103 cu Probleme Legate de Infrastructura de \u00cenc\u0103rcare","author":"Bejenaru Alexandru Ionut","date":"21 decembrie 2023","format":false,"excerpt":"Compania american\u0103 Astrobotic \u00ee\u0219i propune s\u0103 realizeze o asolizare pe Lun\u0103 pe 25 ianuarie 2024, marc\u00e2nd o revenire a Statelor Unite pe suprafa\u021ba lunar\u0103 dup\u0103 peste 50 de ani. Modulul\u2026","rel":"","context":"\u00cen \u201e\u0218tiin\u021b\u0103\u201d","block_context":{"text":"\u0218tiin\u021b\u0103","link":"https:\/\/diagnozabam.ro\/sfaturi\/ro\/category\/stiinta\/"},"img":{"alt_text":"entuziasmul pentru masinile electrice anunta apocalipsa petrolului dar europa se confrunta cu probleme legate de infrastructura de incarcare mfrh original","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2023\/12\/entuziasmul-pentru-masinile-electrice-anunta-apocalipsa-petrolului-dar-europa-se-confrunta-cu-probleme-legate-de-infrastructura-de-incarcare-mfrh-original.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2023\/12\/entuziasmul-pentru-masinile-electrice-anunta-apocalipsa-petrolului-dar-europa-se-confrunta-cu-probleme-legate-de-infrastructura-de-incarcare-mfrh-original.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2023\/12\/entuziasmul-pentru-masinile-electrice-anunta-apocalipsa-petrolului-dar-europa-se-confrunta-cu-probleme-legate-de-infrastructura-de-incarcare-mfrh-original.webp?resize=525%2C300&ssl=1 1.5x"},"classes":[]}],"jetpack_shortlink":"https:\/\/wp.me\/pf97go-3Jd","jetpack_likes_enabled":true,"jetpack_featured_media_url":"https:\/\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/03\/Cum-functioneaza-o-racheta-spatiala.webp","pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/14335","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/comments?post=14335"}],"version-history":[{"count":4,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/14335\/revisions"}],"predecessor-version":[{"id":47690,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/14335\/revisions\/47690"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/media\/14336"}],"wp:attachment":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/media?parent=14335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/categories?post=14335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/tags?post=14335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}