') no-repeat center / 30px 24px transparent;border:0;cursor:pointer;margin:auto;padding:0;width:64px;height:64px;}[data-tadevel-template="web/frame-nav"].top-nav .top-nav-left-bar{position:absolute;left:0;top:0;bottom:0;display:flex;align-items:center;}[data-tadevel-template="web/frame-nav"].top-nav .top-nav-right-bar{position:absolute;right:0;top:0;bottom:0;display:none;}[data-tadevel-template="web/frame-nav"].top-nav .center-bar{position:absolute;top:0;right:64px;bottom:0;left:64px;text-align:center;}[data-tadevel-template="web/frame-nav"].top-nav .center-bar a{display:block;height:100%;}[data-tadevel-template="web/frame-nav"].top-nav .center-bar a .logo{position:absolute;top:0px;right:0px;bottom:0px;left:0px;margin:auto;--object-fit:contain;}@media (prefers-color-scheme: dark){body[data-dark-available] [data-tadevel-template="web/frame-nav"].top-nav{background-color:black;color:var(--primary-text-color);}body[data-dark-available] [data-tadevel-template="web/frame-nav"].top-nav .hamburger{filter:contrast(0) brightness(2);}}@media print{[data-tadevel-template="web/frame-nav"].top-nav .top-nav-left-bar, [data-tadevel-template="web/frame-nav"].top-nav .top-nav-right-bar{display:none;}}[data-tadevel-template="web/frame-nav"].nav-hidden{transform:translateY(-100%) translateY(-4px);}*{box-sizing:border-box;}body{--primary-background-color:#ffffff;--primary-text-color:#212121;--secondary-background-color:#eeeeee;--secondary-text-color:#6c6c6c;--primary-safe30-color:#26A680;--primary-safe45-color:#1E8466;--primary-safe71-color:#17634C;--accent-safe30-color:#26A680;--accent-safe45-color:#1E8466;--accent-safe71-color:#17634C;word-wrap:break-word;background-color:var(--primary-background-color);color:var(--primary-text-color);--spacing-horizontal:12px;--primary-color:#2ab78d;--primary-contrast-color:#212121;--accent-color:#2ab78d;--accent-contrast-color:#212121;--error-color:#dd2c00;}@media (min-width: 768px){body{--spacing-horizontal:16px;}}@media (prefers-color-scheme: dark){body[data-dark-available]{--primary-background-color:#212121;--primary-text-color:#ffffff;--secondary-background-color:black;--secondary-text-color:#acacac;--primary-safe30-color:#2AB78D;--primary-safe45-color:#2AB78D;--primary-safe71-color:#2DC497;--accent-safe30-color:#2AB78D;--accent-safe45-color:#2AB78D;--accent-safe71-color:#2DC497;}}body{margin:0;--object-fit:contain;--object-position:center;}a, a:hover, a:active{text-decoration:inherit;color:inherit;}img{object-fit:var(--object-fit);object-position:var(--object-position);}img.emoji{height:1em;width:1em;margin:0 0.05em 0 0.1em;vertical-align:-0.1em;}img[lazy-src]:not([alt=""]), img[lazy-srcset]:not([alt=""]), source[lazy-src] + img:not([alt=""]), source[lazy-srcset] + img:not([alt=""]){opacity:0;}amp-img .amp-active{display:none;}iframe[id^="google_ads_iframe_"]{display:block;margin:auto;}.spacing-padding{padding:8px;}.spacing-margin{margin:8px;}.padding{padding-left:12px;padding-right:12px;}@media (min-width: 768px){.padding{padding-left:16px;padding-right:16px;}}.row{margin-left:calc(-1 * var(--spacing-horizontal));margin-right:calc(-1 * var(--spacing-horizontal));}.singleline{text-overflow:ellipsis;white-space:nowrap;overflow:hidden;}.flex{display:flex;}@media (max-width: 767px){.if-nsm{display:none;}}@media (min-width: 768px){.if-sm{display:none;}}.centered-content{text-align:center;}.centered-content > div{display:block !important;margin:auto !important;text-align:center;}@media (min-width: 768px){.page-content{border-left:1px solid #eee;border-right:1px solid #eee;}}@media (prefers-color-scheme: dark){html[data-dark-available] .page-content{border-color:black;}}.columns{position:relative;margin-left:calc(-1 * var(--spacing-horizontal));margin-right:calc(-1 * var(--spacing-horizontal));}.columns .column-main{padding:16px var(--spacing-horizontal) 0;margin:0;}@media (min-width: 970px){.columns .column-main{width:calc(100% - 300px - var(--spacing-horizontal) - var(--spacing-horizontal));}}.columns .column-aux{padding:16px var(--spacing-horizontal) 0;}.columns .column-aux > *{margin-bottom:16px;}@media (min-width: 970px){.columns .column-aux{width:300px;box-sizing:content-box;}}@media (min-width: 970px){.columns{display:flex;}.columns > *{flex-shrink:0;}}.container{padding-left:12px;padding-right:12px;position:relative;margin:auto;}@media (min-width: 768px){.container{padding-left:16px;padding-right:16px;}}@media (min-width: 1024px){.container{width:calc(970px + 16px + 16px);}}title-header, .title-header{display:block;text-transform:uppercase;font-weight:600;font-size:28px;line-height:1.8;}.photo{padding-bottom:56.25%;position:relative;background-size:cover;background-position:center;}#frame-content > .frame-separator{height:8px;background-color:var(--secondary-background-color);}#frame-content > .frame-loading::before{display:block;content:'Cargando contenido...';text-align:center;padding:64px 64px 512px;color:var(--secondary-text-color);text-transform:uppercase;font-size:16px;}share-button-set{opacity:0;transition:opacity 0.2s ease-in;}body:not([my-unresolved]) share-button-set{opacity:1;}view-offline{padding:8px 16px;background:#d32f2f;color:white;text-transform:uppercase;font-size:14px;font-weight:bold;text-align:center;box-shadow:0 2px 4px grey;display:none;}body.offline view-offline{display:block;}body.debugging [data-tadevel-template]{border:4px solid blue;}body.debugging [data-tadevel-template] .hint{position:absolute;top:0;left:0;color:blue;text-transform:uppercase;font-weight:bold;background:white;font-size:12px;}x-carousel{position:relative;display:block;}x-carousel .x-carousel-content{width:100%;display:flex;flex-direction:row;-ms-scroll-snap-type:x mandatory;scroll-snap-type:x mandatory;overflow-x:scroll;overflow-y:hidden;padding-bottom:4px;}x-carousel .x-carousel-content::-webkit-scrollbar{width:2px;height:2px;}x-carousel .x-carousel-content::-webkit-scrollbar-track{background:rgba(0, 0, 0, 0.1);}x-carousel .x-carousel-content::-webkit-scrollbar-thumb{background:rgba(0, 0, 0, 0.5);}x-carousel .x-carousel-content > *{flex-shrink:0;scroll-snap-align:start;}#onesignal-popover-container{z-index:3 !important;}view-firebase-prompt, view-install-prompt{will-change:transform;top:initial;bottom:0;transition:transform 0.2s ease-in;transform:translateY(100%);filter:none;}view-firebase-prompt[shown], view-install-prompt[shown]{filter:drop-shadow(0px 2px 4px #00000088);transform:translateY(0);}@media (min-width: 768px){view-firebase-prompt, view-install-prompt{top:0;bottom:initial;transform:translateY(-100%);}view-firebase-prompt[shown], view-install-prompt[shown]{filter:drop-shadow(0px -2px 4px #00000088);transform:translateY(0);}}aux-sheet .wrapper.aux-sheet{bottom:var(--view-toolbar-wrapper-total-height);filter:drop-shadow(0px -8px 8px #000000aa);}[data-tadevel-template="web/multimedia-facade"] .run{background:none;border:none;position:absolute;top:0;right:0;bottom:0;left:0;margin:auto;width:100%;height:100%;cursor:pointer;padding:0;}[data-tadevel-template="web/multimedia-facade"] .run svg{fill:var(--accent-color);filter:drop-shadow(2px 4px 6px black);width:96px;height:96px;max-height:100%;}[data-tadevel-template="web/multimedia-iframe"]{--object-fit:cover;}[data-tadevel-template="web/multimedia-iframe"].backdrop{background-color:black;}[data-tadevel-template="web/multimedia-iframe"].backdrop .loader{position:absolute;top:0;right:0;bottom:0;left:0;margin:auto;}[data-tadevel-template="web/multimedia"]{margin:0;}[data-tadevel-template="web/multimedia"] .caption{padding:8px 0;font-size:0.8em;}[data-tadevel-template="web/multimedia"]:not([data-url*="facebook"]) .sizer[data-sizer="aspect-ratio"]{height:0;--aspect-ratio-min-height:360px;padding-bottom:min(var(--aspect-ratio-min-height), var(--aspect-ratio, 56.25%));}@media (min-width: 768px){[data-tadevel-template="web/multimedia"]:not([data-url*="facebook"]) .sizer[data-sizer="aspect-ratio"]{--aspect-ratio-min-height:480px;}}[data-tadevel-template="web/multimedia"] .sizer .spinner{--spinner-color:white;margin:auto;top:0;right:0;bottom:0;left:0;position:absolute;}[data-tadevel-template="web/multimedia"] .sizer .backdrop{background-color:black;}[data-tadevel-template="web/multimedia"] .sizer tadevel-sandbox iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100% !important;height:100% !important;}[data-tadevel-template="web/multimedia"].multimedia[data-type="photo"] amp-img img{object-fit:contain;}[data-tadevel-template="web/toolbar-wrapper"]{z-index:3;position:fixed;bottom:0;margin:auto;left:0;right:0;background:white;width:100%;filter:drop-shadow(2px 4px 6px black);color:#333;transition:transform 0.2s ease-in;}[data-tadevel-template="web/toolbar-wrapper"] > #view-toolbar-wrapper-content{position:absolute;top:100%;width:100%;background:white;}[data-tadevel-template="web/toolbar-wrapper"] view-toolbar{display:block;min-height:48px;}@media (min-width: 768px){[data-tadevel-template="web/toolbar-wrapper"]{width:-moz-fit-content;width:fit-content;min-width:480px;}}[data-tadevel-template="web/x-loader"].spinner{margin:100px auto;max-width:50px;max-height:50px;text-align:center;font-size:10px;display:flex;}[data-tadevel-template="web/x-loader"].spinner > div{background-color:var(--spinner-color, #333);height:100%;width:6px;display:inline-block;margin:0 4px;-webkit-animation:sk-stretchdelay 1.2s infinite ease-in-out;animation:sk-stretchdelay 1.2s infinite ease-in-out;}[data-tadevel-template="web/x-loader"].spinner .rect2{-webkit-animation-delay:-1.1s;animation-delay:-1.1s;}[data-tadevel-template="web/x-loader"].spinner .rect3{-webkit-animation-delay:-1s;animation-delay:-1s;}[data-tadevel-template="web/x-loader"].spinner .rect4{-webkit-animation-delay:-0.9s;animation-delay:-0.9s;}[data-tadevel-template="web/x-loader"].spinner .rect5{-webkit-animation-delay:-0.8s;animation-delay:-0.8s;}@-webkit-keyframes sk-stretchdelay{0%, 40%, 100%{-webkit-transform:scaleY(0.4);}20%{-webkit-transform:scaleY(1);}}@keyframes sk-stretchdelay{0%, 40%, 100%{transform:scaleY(0.4);-webkit-transform:scaleY(0.4);}20%{transform:scaleY(1);-webkit-transform:scaleY(1);}}[data-tadevel-template="web/frame"]{font-family:'Open Sans', Arial;}[data-tadevel-template="web/frame"] body{background-color:var(--secondary-background-color);}[data-tadevel-template="web/frame"] title-header{font-weight:bold !important;}[data-tadevel-template="web/frame"] img.style-scope.frame-separator{padding:12px !important;}[data-tadevel-template="web/frame"] .page-content{background:var(--primary-background-color);padding-top:16px;}@media (min-width: 768px){[data-tadevel-template="web/frame"] [data-tadevel-template="web/toolbar-wrapper"]{max-width:initial;width:-moz-fit-content;width:fit-content;min-width:480px;}}[data-tadevel-template="web/frame"] view-weather .icon.view-weather img.view-weather{height:32px;}[data-tadevel-template="web/frame"] view-weather .temp.view-weather{font-size:20px;}[data-tadevel-template="web/frame"] view-weather .city.view-weather{font-size:15px;font-weight:initial;}[data-tadevel-template="web/frame"] [data-tadevel-template="web/frame-nav"]{background-color:var(--primary-background-color);background-image:linear-gradient(0deg, #CCCCCC44, rgba(204, 204, 204, 0));}[data-tadevel-template="web/frame"] [data-tadevel-template="web/frame-nav"].top-nav .logo{max-height:36px;}@media (min-width: 768px){[data-tadevel-template="web/frame"] [data-tadevel-template="web/frame-nav"].top-nav{transition:all 0.2s ease-in;}[data-tadevel-template="web/frame"] [data-tadevel-template="web/frame-nav"].top-nav:not(.floating){height:96px;}[data-tadevel-template="web/frame"] [data-tadevel-template="web/frame-nav"].top-nav .logo{transition:all 0.2s ease-in;max-height:48px;}[data-tadevel-template="web/frame"] [data-tadevel-template="web/frame-nav"].top-nav .top-nav-right-bar{display:flex;align-items:center;}}@media (min-width: 1280px){[data-tadevel-template="web/frame"] [data-tadevel-template="web/frame-nav"] .container{width:1280px;}}[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .article-live{padding:6px 12px;}[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .article-kicker{display:inline-block;background:var(--primary-color);color:white;padding:4px 8px;font-size:12px;font-weight:bold;}[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .article-title{font-weight:bold;font-size:30px;line-height:1.5;}@media (min-width: 768px){[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .article-title{font-size:52px;line-height:1.6;padding-right:128px;}}[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .article-body{font-size:17px;line-height:28px;}@media (prefers-color-scheme: light){[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .article-title{color:#4f4f4f;}[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .article-body{color:#282828;}}@media (min-width: 1280px){[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .container{width:1200px;}[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .container .column-main{padding:16px 64px 16px 16px;border-right:0;}[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] .container .column-aux{border-left:0;}}@media (min-width: 768px){[data-tadevel-template="web/frame"] [data-tadevel-template="web/article"] article-related .items > *{width:calc(25% - 16px);}}[data-tadevel-template="web/frame"] body.front-flama, [data-tadevel-template="web/frame"] body.front-rosario-central, [data-tadevel-template="web/frame"] body.front-newells{background:#2f2f2f;}[data-tadevel-template="web/frame"] body.front-flama .top-nav, [data-tadevel-template="web/frame"] body.front-rosario-central .top-nav, [data-tadevel-template="web/frame"] body.front-newells .top-nav{color:white;box-shadow:0 0 4px black;}[data-tadevel-template="web/frame"] body.front-flama .page-content, [data-tadevel-template="web/frame"] body.front-rosario-central .page-content, [data-tadevel-template="web/frame"] body.front-newells .page-content{border-color:black;background:none;}[data-tadevel-template="web/frame"] body.front-flama view-foo, [data-tadevel-template="web/frame"] body.front-rosario-central view-foo, [data-tadevel-template="web/frame"] body.front-newells view-foo{background-color:#111;color:white;box-shadow:0 0 3px black;}[data-tadevel-template="web/frame"] body.front-flama view-foo img, [data-tadevel-template="web/frame"] body.front-rosario-central view-foo img, [data-tadevel-template="web/frame"] body.front-newells view-foo img{filter:contrast(0) brightness(2);}[data-tadevel-template="web/frame"] body.front-flama .top-nav{background-color:#232323;background-image:url(//www.rosarioplus.com/arte/trama-5.png);}[data-tadevel-template="web/frame"] body.front-flama .top-nav view-weather{color:white;}[data-tadevel-template="web/frame"] body.front-flama .top-nav .logo{filter:contrast(0) brightness(2);}[data-tadevel-template="web/frame"] body.front-rosario-central .top-nav, [data-tadevel-template="web/frame"] body.front-newells .top-nav, [data-tadevel-template="web/frame"] body.category-nob .top-nav, [data-tadevel-template="web/frame"] body.category-rc .top-nav{background-color:#1e1e1e;background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAKCAYAAABmBXS+AAAABmJLR0QA/wD/AP+gvaeTAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH5AgfFAYYJxLLQAAAAHdJREFUGNNtkLEOAjEMQx+nDhlZb/LMeCufAisb38cH+S9uZDmjUJ2lqK4bV04AqtVNEkDlBOpyECTttosGSTvACJkR3XYtEfNLN9l+AO9x5m6mJ7CNOceEV9y/KTrP/dD+VnDa3HeyAR9gnRuXFnYF7sA1wfP2BR1uJKRFpLQxAAAAAElFTkSuQmCC);}[data-tadevel-template="web/frame"] body.front-rosario-central .top-nav::after, [data-tadevel-template="web/frame"] body.front-newells .top-nav::after, [data-tadevel-template="web/frame"] body.category-nob .top-nav::after, [data-tadevel-template="web/frame"] body.category-rc .top-nav::after{content:' ';display:block;background:var(--ribbon);height:3px;}[data-tadevel-template="web/frame"] body.front-rosario-central .top-nav view-weather, [data-tadevel-template="web/frame"] body.front-newells .top-nav view-weather, [data-tadevel-template="web/frame"] body.category-nob .top-nav view-weather, [data-tadevel-template="web/frame"] body.category-rc .top-nav view-weather{display:none;}[data-tadevel-template="web/frame"] body.front-rosario-central .top-nav .logo, [data-tadevel-template="web/frame"] body.front-newells .top-nav .logo, [data-tadevel-template="web/frame"] body.category-nob .top-nav .logo, [data-tadevel-template="web/frame"] body.category-rc .top-nav .logo, [data-tadevel-template="web/frame"] body.front-rosario-central .top-nav .toggle-menu, [data-tadevel-template="web/frame"] body.front-newells .top-nav .toggle-menu, [data-tadevel-template="web/frame"] body.category-nob .top-nav .toggle-menu, [data-tadevel-template="web/frame"] body.category-rc .top-nav .toggle-menu{filter:contrast(0) brightness(2) drop-shadow(2px 4px 6px black);}[data-tadevel-template="web/frame"] body.front-newells .top-nav, [data-tadevel-template="web/frame"] body.category-nob .top-nav{--color-primary:#ee1d23;--color-background:#1e1e1e;--ribbon:linear-gradient(to right, #cf0202 50%, #000000 50%);}[data-tadevel-template="web/frame"] body.front-rosario-central .top-nav, [data-tadevel-template="web/frame"] body.category-rc .top-nav{--color-primary:#f4bc22;--color-background:#163254;--ribbon:linear-gradient(to right, #f4bc22 0%, #f4bc22 14%, #234b7f 14%, #234b7f 28%, #f4bc22 28%, #f4bc22 42%, #234b7f 42%, #234b7f 56%, #f4bc22 56%, #f4bc22 70%, #234b7f 70%, #234b7f 86%, #f4bc22 86%, #f4bc22 100%);}[data-tadevel-template="web/frame"] [data-tadevel-template="web/frame-drawer"] paper-item{min-height:40px;font-size:15px;}@media (prefers-color-scheme: dark){[data-tadevel-template="web/frame"] body[data-dark-available] view-weather{color:white;}[data-tadevel-template="web/frame"] body[data-dark-available] .page-content{border-color:black;}}[data-tadevel-template="web/frame-body"]{}@media (min-width: 1366px){[data-tadevel-template="web/frame-body"] [is="page-front"]{left:-150px;}[data-tadevel-template="web/frame-body"] .offset-target{transform:translateX(-150px);}}[data-tadevel-template="web/frame-nav"].top-nav .date{position:absolute;bottom:4px;left:0;right:0;font-size:12px;text-transform:uppercase;transition:all 0.2s ease-in;line-height:1;}@media (max-width: 768px){[data-tadevel-template="web/frame-nav"].top-nav .date{display:none;}}[data-tadevel-template="web/frame-nav"].top-nav.floating .logo{padding-bottom:4px;}[data-tadevel-template="web/frame-nav"].top-nav.floating .date{bottom:1px;}[data-tadevel-template="web/frame-nav"].top-nav .top-nav-right-bar{display:flex;align-items:center;}
24 de abril de 2024
Hipersónico
China diseña un avión que unirá Pekín y Nueva York en 2 horas Una nave tan veloz que cubrirá 11 mil km en solo 120 minutos viernes 23 de febrero de 2018 10:09 Una nave tan veloz que recorre 6 mil km por hora
Un equipo de científicos chinos diseñó un avión ultrarrápido que podría conectar Pekín y Nueva York en dos horas y transportar docenas de personas y toneladas de cargamento, ya que el aparato viajaría a más de 6.000 kilómetros por hora.
"Llevará solo un par de horas viajar de Pekin a Nueva York a una velocidad hipersónica", explicó el equipo liderado por Cui Kai de la Academia de Ciencias de China en un artículo científico publicado por el diario independiente South China Morning Post, citado por EFE.
En la actualidad, un avión de pasajeros tarda aproximadamente 14 horas para recorrer los 11.000 kilómetros que separan ambas ciudades.
Bautizado como I-plane, se trata de un diseño biplano, similar a los utilizados durante la Primera Guerra Mundial, con el objetivo de que pueda manejar una carga más pesada que otras naves hipersónicas que tienen una forma aerodinámica y alas delta, precisaron los investigadores.
El equipo de científicos probó una versión reducida del aparato en un túnel de viento que también se utilizó para realizar evaluaciones aerodinámicas de los últimos prototipos de armas hipersónicas en China.
La prueba consistió en lanzarlo a una velocidad siete veces superior a la del sonido -1.235 kilómetros por hora- y, "sorprendentemente", comprobaron que funcionaba correctamente.
Países como China y Estados Unidos están desarrollando armas hipersónicas, así como vehículos hipersónicos que les permitirían penetrar con cierta facilidad en el sistema de defensa antimisiles de otro país.
Los vehículos hipersónicos en los que se trabaja actualmente se encuentran en una etapa experimental ante los grandes desafíos tecnológicos que existen y, de momento, ninguno de ellos puede transportar pasajeros.