{"id":7653,"date":"2021-04-16T11:10:29","date_gmt":"2021-04-16T14:10:29","guid":{"rendered":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=7653"},"modified":"2021-04-16T11:10:29","modified_gmt":"2021-04-16T14:10:29","slug":"propulsion-nuclear-para-naves-espaciales-2","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=7653","title":{"rendered":"Propulsi\u00f3n nuclear para naves espaciales"},"content":{"rendered":"<p>La NASA retom\u00f3\u00a0recientemente\u00a0el desarrollo de naves espaciales que utilicen un sistema de propulsi\u00f3n basado en la energ\u00eda nuclear. Ahora, la Agencia estadounidense DARPA (Defense Advanced\u00a0Research and Development Projects) ha seleccionado a las compa\u00f1\u00edas\u00a0Lockheed Martin y Blue Origins para llevar adelante este ambicioso programa.<\/p>\n<hr \/>\n<p>WASHINGTON \u2014 The Defense Advanced Research Projects Agency selected Blue Origin and Lockheed Martin to develop competing spacecraft concepts for a demonstration of nuclear thermal propulsion, the agency <a href=\"https:\/\/www.darpa.mil\/news-events\/2021-04-12\" target=\"_blank\" rel=\"noopener\">announced April 12.<\/a><\/p>\n<p>Under a program called DRACO, short for demonstration rocket for agile cislunar operations, DARPA wants to demonstrate nuclear thermal propulsion technology \u2014 using a nuclear reactor to heat up rocket fuel to generate thrust.<\/p>\n<p>DARPA awarded General Atomics a <a href=\"https:\/\/spacenews.com\/general-atomics-wins-darpa-contract-to-design-nuclear-reactor-to-power-missions-to-the-moon\/\" target=\"_blank\" rel=\"noopener\">$22 million contract<\/a> to develop the nuclear reactor.\u00a0Lockheed Martin\u2019s contract value is $2.9 million and the Blue Origin\u2019s is $2.5 million.<\/p>\n<p>The goal of the program is to launch a spacecraft driven by nuclear thermal propulsion above low Earth orbit in 2025. DARPA believes this technology will allow spacecraft to travel huge distances quickly.<\/p>\n<p>\u201cRapid maneuver in the space domain has traditionally been challenging because current electric and chemical space propulsion systems have drawbacks in thrust-to-weight and propellent efficiency, respectively,\u201d said Maj Nathan Greiner, DRACO program manager.<\/p>\n<p>Nuclear thermal propulsion \u201chas the potential to achieve high thrust-to-weight ratios similar to in-space chemical propulsion and approach the high propellent efficiency of electric systems,\u201d he said.<\/p>\n<p>The<span class=\"Apple-converted-space\">\u00a0 <\/span>first phase of the program will last 18 months and will focus on General Atomics\u2019 reactor and propulsion subsystem concepts. In the second phase, Blue Origin and Lockheed Martin will independently develop spacecraft concept designs.<\/p>\n<p>Brent Sherwood, senior vice president of advanced development programs at Blue Origin, said in a statement to <em>SpaceNews<\/em> that\u00a0Blue Origin is \u201cexcited to support DARPA in maturing spacecraft concepts for this important technology area.\u201d<\/p>\n<p>Bill Pratt, manager of human exploration advanced programs at Lockheed Martin Space, said nuclear thermal propulsion is a \u201ctransformative technology that will dramatically change the way spacecraft will operate, increasing agility and allowing more efficient travel to Mars and beyond in far less time than conventional propulsion systems.\u201d<\/p>\n<p>Pratt said in a statement that the company will leverage work done on nuclear propulsion in previous decades \u201cas we combine it with digital engineering, modern spacecraft design and creativity to advance this new capability.\u201d<\/p>\n<p><strong>Fuente:<\/strong> <a href=\"https:\/\/spacenews.com\/darpa-selects-blue-origin-lockheed-martin-to-develop-spacecraft-for-nuclear-propulsion-demo\/\" target=\"_blank\" rel=\"noopener\"><em>https:\/\/spacenews.com<\/em><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La NASA retom\u00f3\u00a0recientemente\u00a0el desarrollo de naves espaciales que utilicen un sistema de propulsi\u00f3n basado en la energ\u00eda nuclear. Ahora, la Agencia estadounidense DARPA (Defense Advanced\u00a0Research&hellip; <\/p>\n","protected":false},"author":1,"featured_media":7654,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[35,24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/7653"}],"collection":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7653"}],"version-history":[{"count":1,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/7653\/revisions"}],"predecessor-version":[{"id":7655,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/7653\/revisions\/7655"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/media\/7654"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}