{"id":37263,"date":"2020-12-17T00:16:50","date_gmt":"2020-12-16T16:16:50","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/india-launches-pslv-rocket-with-cms-01-communications-satellite\/"},"modified":"2020-12-17T00:16:50","modified_gmt":"2020-12-16T16:16:50","slug":"india-launches-pslv-rocket-with-cms-01-communications-satellite","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/india-launches-pslv-rocket-with-cms-01-communications-satellite\/","title":{"rendered":"India launches PSLV rocket with CMS-01 communications satellite"},"content":{"rendered":"<p>The Indian Space Research Organisation, ISRO, has launched their second mission of 2020 using their workhorse rocket: the Polar Satellite Launch Vehicle, or PSLV.&nbsp;<\/p>\n<p>The mission carried the CMS-01 replacement communications satellite to orbit on Thursday, 17 December at 10:11 UTC, or 05:11 EST.&nbsp; The launch occurred locally at 15:41 IST (Indian Standard Time) from the Second Launch Pad at the Satish Dhawan Space Centre on India\u2019s east coast.<\/p>\n<\/p>\n<p>The flight was only the second \u2014 and last \u2014 from India this year as the country continues to grapple with the ongoing COVID-19 pandemic that has seen a slew of launches delayed for personnel protection.<\/p>\n<p>As with the previous flight in November, the PSLV rocket launched a single primary passenger: the CMS-01 communications satellite, previously named GSAT-12R.<\/p>\n<p>The mission marked the 52nd flight of the PSLV rocket, which took CMS-01 into a Geostationary Transfer Orbit, or GTO.<\/p>\n<p>In order to lift the payload to its designated orbit, the PSLV rocket flew in its \u201cXL\u201d variant, which consisted of six side-mounted boosters \u2014 the maximum possible for the PSLV.<\/p>\n<p>This was the 22nd launch of the PSLV in the \u201cXL\u201d configuration, the 77th mission to launch from the Satish Dhawan Space Centre, and the 42nd communications satellite for India.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" aria-describedby=\"caption-attachment-72632\" class=\"size-full wp-image-72632\" src=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/Geo-Stationary-Satellite-GSAT-12-The-GSAT-10-satellite-at-French-Guyana-launched-by-Ariane-5-India-1-1.jpg\" alt=\"\" width=\"833\" height=\"595\" srcset=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/Geo-Stationary-Satellite-GSAT-12-The-GSAT-10-satellite-at-French-Guyana-launched-by-Ariane-5-India-1-1.jpg 833w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/Geo-Stationary-Satellite-GSAT-12-The-GSAT-10-satellite-at-French-Guyana-launched-by-Ariane-5-India-1-1-350x250.jpg 350w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/Geo-Stationary-Satellite-GSAT-12-The-GSAT-10-satellite-at-French-Guyana-launched-by-Ariane-5-India-1-1-490x350.jpg 490w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/Geo-Stationary-Satellite-GSAT-12-The-GSAT-10-satellite-at-French-Guyana-launched-by-Ariane-5-India-1-1-768x549.jpg 768w\" sizes=\"(max-width: 833px) 100vw, 833px\"><\/p>\n<p id=\"caption-attachment-72632\" class=\"wp-caption-text\">GSAT-12, which CMS-01 is replacing and is reported to be closely related to, seen prior its launch in 2011. (Credit: ISRO\/Arianespace)<\/p>\n<p>CMS-01, once deployed to its full Geostationary orbit, or GEO, will provide Extended-C Band coverage for the Indian mainland as well as the Andaman-Nicobar and Lakshadweep islands.&nbsp; The C Band ranges from 4.0 to 8.0 gigahertz and is commonly used in cordless phones, wi-fi devices, satellite communication, and surveillance and weather radar.<\/p>\n<p>ISRO has not released many details about the satellite; however, it is a replacement for the aging GSAT-12 platform which launched on 15 July 2011 and was supposed to serve for seven years.<\/p>\n<h4 class=\"widget-title penci-border-arrow\">See Also<\/h4>\n<ul>\n<li>LIVE UPDATES CMS-01 Launch<\/li>\n<li>Indian Space Program coverage<\/li>\n<li>Click here to Join L2<\/li>\n<\/ul>\n<p>Over nine years later, its replacement has now launched.&nbsp; GSAT-12 itself was a replacement for INSAT-3B.<\/p>\n<p>CMS-01 is reported to have similar features to GSAT-12, with a mass of 1,410 kilograms built around an I-1K satellite bus with two deployable solar arrays capable of 1500 W power generation.<\/p>\n<p>The satellite will take up position at the 83\u00b0 East GEO location, directly above the Indian Ocean.<\/p>\n<p>Launch<\/p>\n<p>The CMS-01 mission lifted off from the same launch pad that its predecessor, GSAT-12, launched from.<\/p>\n<p>The rocket and payload were rolled out from their vertical integration facility to the Second Launch Pad on 14 December for final launch preparations.<\/p>\n<p>After arriving at the launch pad, crews connected the rocket\u2019s mobile launch stand to its ground support equipment for purge and fuel operations as well as electrical\/data connections for personnel at the launch and mission control center.<\/p>\n<p><iframe id=\"twitter-widget-1\" scrolling=\"no\" frameborder=\"0\" allowtransparency=\"true\" allowfullscreen=\"true\" class=\"\" style=\"position: absolute; visibility: hidden; width: 0px; height: 0px; display: block; flex-grow: 1;\" title=\"X Post\" src=\"https:\/\/platform.twitter.com\/embed\/Tweet.html?creatorScreenName=NASASpaceflight&amp;dnt=true&amp;embedId=twitter-widget-1&amp;features=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%3D%3D&amp;frame=false&amp;hideCard=false&amp;hideThread=false&amp;id=1339145586805633024&amp;lang=en&amp;origin=https%3A%2F%2Fwww.nasaspaceflight.com%2F2020%2F12%2Findia-pslv-rocket-launches-cms-01%2F&amp;sessionId=c01a73bdaa9f7f8695104103ed6bc247f330caa5&amp;siteScreenName=NASASpaceflight&amp;theme=light&amp;widgetsVersion=6a3ad42b224df%3A1778106238597&amp;width=550px\" data-gtm-yt-inspected-14=\"true\" data-gtm-yt-inspected-21=\"true\" data-tweet-id=\"1339145586805633024\"><\/iframe><\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\" data-twitter-extracted-i1783497744329955477=\"true\">\n<p lang=\"en\" dir=\"ltr\">Countdown for the launch of #PSLVC50\/#CMS01 mission commenced today at 1441 Hrs (IST) from Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota. <\/p>\n<p>Launch is scheduled tomorrow at 1541 Hrs IST . pic.twitter.com\/oYURy06OGc<\/p>\n<p>\u2014 ISRO (@isro) December 16, 2020<\/p>\n<\/blockquote>\n<p>The 25 hour countdown began on 16 December at 09:11 UTC (14:41 IST at the launch site) and was followed 90 minutes later by the start of fueling of the fourth stage with its highly toxic propellants.<\/p>\n<p>Second stage fueling started seven hours before liftoff.<\/p>\n<p>Once the countdown reached T0, the first stage, known as the PS1, ignited.&nbsp; This was followed in quick succession by the ignition of the four ground lit PSOMs, which are the strap-on boosters.<\/p>\n<p>The first two PSOMs ignited 0.42 seconds after the PS1 booster, and the third and fourth PSOMs lit 0.62 seconds after the first stage.<\/p>\n<p>At T+25 seconds, the two air-lit PSOMs were ignited.&nbsp; All six PSOMs carried 12.4 tonnes of propellant&nbsp;called Hydroxyl-terminated polybutadiene, or HTPB.&nbsp; This is the same solid propellant used in the PS1 core booster.<\/p>\n<p>Between T+1 minute 9 seconds and T+1 min 10 seconds, the four ground-lit PSOMs separated in a staggered sequence.&nbsp; This was followed by the separation of the two air-lit PSOMs at T+1 minute 32 seconds.&nbsp;<\/p>\n<p>At T+ 1 minute 49 seconds, the PS1 core booster burned out, and the rocket separated the first and second stages.&nbsp; At this point, the vehicle had a velocity of 2,401.5 m\/s.<\/p>\n<p>After staging, the single Vikas engine on the PS2 second stage ignited.&nbsp;<\/p>\n<p>Unlike the solid propellant first stage, the second stage used liquid fuel to produce 803.7 kN (180,700 lbf) of thrust.&nbsp; The engine ran on toxic propellants, including nitrogen tetroxide and a mixture of 75% unsymmetrical dimethylhydrazine and 25% hydrazine hydrate.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-72634\" class=\"size-full wp-image-72634\" src=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/4-c374241.jpg\" alt=\"\" width=\"675\" height=\"449\" srcset=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/4-c374241.jpg 675w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/4-c374241-350x233.jpg 350w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/4-c374241-526x350.jpg 526w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/4-c374241-585x390.jpg 585w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2020\/12\/4-c374241-263x175.jpg 263w\" sizes=\"(max-width: 675px) 100vw, 675px\"><\/p>\n<p id=\"caption-attachment-72634\" class=\"wp-caption-text\">A PSLV-XL rocket launches from the Satish Dhawan Space Centre in February 2017. (Credit: ISRO)<\/p>\n<p>At T+3 minutes 23 seconds, the fairings separated.&nbsp; At this time, the vehicle was traveling 3,705.4 m\/s.&nbsp; Exactly one minute later, the second stage shut down and separated.<\/p>\n<p>Ignition of the solid propellant third stage, PS3, occurred at T+4 minutes 24 seconds.&nbsp; The PS3 ran on HTPB like the first stage.<\/p>\n<p>The PS3 stage took the craft to a velocity of 7,722 m\/s.&nbsp; At this point, the rocket coasted for approximately four minutes before separating the third sage and igniting the PS4 fourth stage for the climb to Geostationary Transfer Orbit.&nbsp;<\/p>\n<p>The fourth stage burned for 8 minutes 35 seconds and increased the remaining vehicle\u2019s velocity to 9,910 m\/s \u2014 throwing the apogee (highest point from Earth) outward toward Geostationary orbital distance at 35,786 kilometers.<\/p>\n<p>PSLV, however, purposefully left the satellite not quite in true Geostationary Orbit, dropping it off in a 283 x 20,653 km sub-Geostationary Transfer Orbit.<\/p>\n<p>After the fourth stage shut down, the CMS-01 satellite separated at T+20 minutes 11 seconds, completing the rocket\u2019s mission.<\/p>\n<p>Now, the satellite will be responsible for raising its apogee and perigee up to Geostationary Orbit over the course of the following weeks.<\/p>\n<p>Teams will use this time to unfurl the satellite and check out its systems while the craft arcs outward to its final orbit.<\/p>\n<p>CMS-01 is intended \u2014 like the GSAT-12 platform it is replacing \u2014 to serve for at least seven years.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Indian Space Research Organisation, ISRO, has launched their second mission of 2020 using their workhorse rocket: the Polar Satellite Launch Vehicle, or PSLV.&nbsp; The mission carried the CMS-01 replacement communications satellite to orbit on Thursday, 17 December at 10:11 UTC, or 05:11 EST.&nbsp; The launch occurred locally at 15:41 IST (Indian Standard Time) from [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":28203,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[8845,301,525,860],"class_list":["post-37263","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-cms-01","tag-india","tag-isro","tag-pslv"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/37263"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=37263"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/37263\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media\/28203"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=37263"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=37263"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=37263"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}