{"id":1795,"date":"2017-03-14T18:46:43","date_gmt":"2017-03-14T21:46:43","guid":{"rendered":"https:\/\/www.nachodelatorre.com.ar\/mosconi\/?p=1795"},"modified":"2017-03-14T18:46:43","modified_gmt":"2017-03-14T21:46:43","slug":"caracterizacion-de-propulsantes-solidos-electricos-para-micropropulsores","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=1795","title":{"rendered":"Caracterizaci\u00f3n de propulsantes s\u00f3lidos el\u00e9ctricos para micropropulsores"},"content":{"rendered":"<p>Propulsantes s\u00f3lidos el\u00e9ctricos (ESP) son una opci\u00f3n atractiva para la propulsi\u00f3n del espacio porque s\u00f3lo combustionan cuando se les aplica electricidad. En este trabajo, se investiga el comportamiento de dispositivos de micropropulsores pulsantes que utilizan dicho sistema. Estos dispositivos son similares en la funci\u00f3n y operaci\u00f3n a los propulsores de plasma, que t\u00edpicamente utilizan tefl\u00f3n como propulsante. El desarrollo de ESP comenz\u00f3 a fines de los a\u00f1os 90 con la investigaci\u00f3n de generadores de gases verdes de inflado de airbags para autom\u00f3viles (ABIP). Este material, base nitrato de amonio, r\u00e1pidamente atrajo la atenci\u00f3n de la Fuerza A\u00e9rea de Estados Unidos para otras aplicaciones, incluyendo una formulaci\u00f3n patentada para propulsi\u00f3n de cohetes. Poco despu\u00e9s, se desarrollaron los primeros propulsantes s\u00f3lidos extinguibles controlados, el primero de ellos es conocido como &amp;quot;ASPEN\u201d. Desarrollos posteriores condujeron a propulsantes el\u00e9ctricos de mayor rendimiento (HIPEP) basados en nitrato de hidroxilamonio (HAN).<!--more--><\/p>\n<div id=\"content\" class=\"contentcenter full clearfix\">\n<div class=\"column fullpage clearfix\">\n<div>\n<div class=\"region region-content\">\n<div id=\"block-system-main\" class=\"block block-system first last odd\">\n<div class=\"content\">\n<div id=\"node-1041\" class=\"node node-article view-mode-full clearfix\">\n<div class=\"content\">\n<div class=\"field field-name-body field-type-text-with-summary field-label-hidden\">\n<div class=\"field-items\">\n<div class=\"field-item even\">\n<div><img loading=\"lazy\" class=\" alignright\" src=\"http:\/\/www.rocket.com\/files\/aerojet\/images\/News\/20161119_goes-r_support.jpg\" alt=\"Aerojet Rocketdyne successfully supported the launch of the next-generation GOES-R for NASA and NOAA. Credit: United Launch Alliance\" width=\"400\" height=\"266\" \/><\/div>\n<p>SACRAMENTO, Calif., Nov. 19, 2016 \u2013 Aerojet Rocketdyne, a subsidiary of Aerojet Rocketdyne Holdings, Inc. (NYSE: AJRD), successfully supported the launch of the next-generation Geostationary Operational Environmental Satellite-R Series (GOES-R) for the National Oceanic and Atmospheric Administration (NOAA) and NASA. The mission was launched from Cape Canaveral Air Force Station in Florida aboard a United Launch Alliance Atlas V rocket. Aerojet Rocketdyne propulsion systems on the Atlas V included the RL10C-1 upper-stage engine, four Solid Rocket Boosters (SRBs), six helium pressurization tanks and a dozen Centaur upper-stage Reaction Control System thrusters (RCS). On the GOES-R satellite, Aerojet Rocketdyne provides all of the monopropellant hydrazine rocket engines as well as the electric propulsion subsystem.<\/p>\n<p>\u201cWeather is constantly changing, and the faster scientists can predict those changes, the better communities can prepare for severe conditions and phenomena, such as forest fires and volcanic ash. Aerojet Rocketdyne is honored to help launch this critical satellite that will help keep people and their neighborhoods safe,\u201d said Aerojet Rocketdyne CEO and President Eileen Drake.<\/p>\n<p>Aerojet Rocketdyne\u2019s role in the launch began during liftoff when four SRBs ignited to provide 1.5 million pounds of total increased thrust to launch the Atlas V rocket. (Each 67-foot-long, 5-foot-wide composite motor case contains more than 90,000 pounds of propellant, providing more than 375,000 pounds of liftoff thrust.) All Atlas V launches requiring extra boost have flown Aerojet Rocketdyne SRBs.<\/p>\n<p>After separation of the first stage, a single RL10C-1 upper-stage engine ignited to place the payload into orbit, with the RCS thrusters maintaining vehicle orientation and the pressurization tanks maintaining pressure levels in the liquid oxygen\/liquid hydrogen tanks. The RL10C-1 delivers 22,890 pounds of thrust to power the Atlas V upper stage, using cryogenic liquid hydrogen and liquid oxygen propellants during its operation.<\/p>\n<p>The RL10C-1 was developed from the RL10 family of upper-stage engines, which have accumulated one of the most impressive track records of accomplishments in the history of space propulsion. More than 470 RL10 engines have supported launches over the last 50 years, helping to place military, government and commercial satellites into orbit, and powering scientific space-probe missions on every planetary mission in our solar system.<\/p>\n<p>Aerojet Rocketdyne developed a new MR-401 Low Thrust Rocket (LTR) for the GOES-R program that enables compliance with the unique GOES-R mission requirements. The GOES-R satellite has 16 of these MR-401 rockets onboard providing vehicle attitude control, momentum wheel desaturation and east\/west stationkeeping. In addition to the 16 LTRs, Aerojet Rocketdyne also provided the 4.4kW MR-510 electric propulsion subsystem which provides all north\/south stationkeeping for the GOES-R mission, as well as end of life decommissioning. The MR-510 Electric Propulsion (EP) subsystem consists of four MR-510 Arcjet thrusters, one 4.4kW Power Conditioning Unit (PCU), and the electrical harnessing to connect the PCU to the thrusters. The MR-510 EP system enables increased payload capability for the GOES-R mission due to the significant savings in propellant mass provided by the 3x improvement in fuel efficiency.<\/p>\n<p>ARD\u00c9, a subsidiary of Aerojet Rocketdyne based in New Jersey, provided the pressure vessels on the first and second stages of the launch vehicle.<\/p>\n<p>Built by Lockheed Martin, the GOES-R is a four-satellite program (GOES-R\/S\/T\/U) and is a collaborative development and acquisition effort by NOAA and NASA. GOES-R will provide continuous imagery and atmospheric measurements of Earth&#8217;s Western Hemisphere and space weather monitoring, resulting in more timely and accurate weather forecasts. It will improve support for the detection and observations of meteorological phenomena and directly affect public safety, protection of property, and ultimately, economic health and development. In addition to GOES-R, Aerojet Rocketdyne provides the same complement of flight hardware to GOES-S, GOES-T and GOES-U.<\/p>\n<p>Aerojet Rocketdyne is an innovative company delivering solutions that create value for its customers in the aerospace and defense markets. The company is a world-recognized aerospace and defense leader that provides propulsion and energetics to the space, missile defense and strategic systems, tactical systems and armaments areas, in support of domestic and international markets. Additional information about Aerojet Rocketdyne can be obtained by visiting our websites at <a href=\"http:\/\/www.Rocket.com\">www.Rocket.com<\/a> and <a href=\"http:\/\/www.AerojetRocketdyne.com\" target=\"_blank\" rel=\"noopener noreferrer\">www.AerojetRocketdyne.com<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fuente:<\/strong> <em><a href=\"http:\/\/www.rocket.com\/article\/aerojet-rocketdyne-supports-launch-noaa%E2%80%99s-next-generation-geostationary-weather-satellite\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/www.rocket.com<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Propulsantes s\u00f3lidos el\u00e9ctricos (ESP) son una opci\u00f3n atractiva para la propulsi\u00f3n del espacio porque s\u00f3lo combustionan cuando se les aplica electricidad. En este trabajo, se&hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[29,24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/1795"}],"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=1795"}],"version-history":[{"count":0,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/1795\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}