{"id":7379,"date":"2023-04-05T06:43:35","date_gmt":"2023-04-05T01:13:35","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=7379"},"modified":"2025-03-28T20:21:46","modified_gmt":"2025-03-28T14:51:46","slug":"dhawan-ii-engine","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/dhawan-ii-engine\/","title":{"rendered":"Dhawan II Engine"},"content":{"rendered":"<h2><strong>About<\/strong> <strong>Dhawan II Engine:<\/strong><\/h2>\n<ul>\n<li>It is a 3D-printed cryogenic engine developed by the Skyroot Aerospace for its heavier vehicle<strong>, the Vikram II rocket.<\/strong><\/li>\n<li><strong>Features:<\/strong>\n<ul>\n<li>It uses a <strong>3D-printed torch igniter<\/strong> and bellows actuated cryo-injection valve with a quick response time.<\/li>\n<li>It utilises two high-performance rocket propellants, <strong>liquid natural gas<\/strong> (LNG) and <strong>liquid oxygen<\/strong> (LoX), which require cryogenic temperatures (below -150\u00b0 Celsius) for storage and operation.\u00a0<\/li>\n<\/ul>\n<\/li>\n<li><strong>Advantage: <\/strong>A cryogenic upper stage enhances the payload-carrying capacity of a rocket.<\/li>\n<li>The cryogenic engine series is named in honour of Dr Satish Dhawan, an Indian rocket scientist.<\/li>\n<\/ul>\n<h3>What is 3D Printing?<\/h3>\n<ul>\n<li>3D printing or <strong>additive manufacturing<\/strong> is a process of making three-dimensional solid objects from a digital file.<\/li>\n<li>The creation of a 3D-printed object is achieved using additive processes.\u00a0<\/li>\n<li>In an additive process, an object is <strong>created by laying down successive layers of material <\/strong>until the object is created. Each of these layers can be seen as a thinly sliced cross-section of the object.<\/li>\n<li>3D printing enables you to produce <strong>complex shapes using less material<\/strong> than traditional manufacturing methods.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3>Q1) What is liquefied natural gas?<\/h3>\n<p>Liquefied natural gas (LNG) is a natural gas that has been converted to liquid form for ease of transportation and storage. Natural gas, which is primarily composed of methane, is liquefied by cooling it to approximately -162\u00b0C (-260\u00b0F) at atmospheric pressure.<\/p>\n<p><strong>Source:\u00a0<\/strong><a href=\"https:\/\/indianexpress.com\/article\/technology\/science\/skyroot-testfires-3d-printed-cryogenic-engine-8538786\/\" target=\"_blank\" rel=\"nofollow noopener\"><u>\u00a0Skyroot testfires 3D-printed cryogenic engine<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dhawan II engine  is a 3D-printed cryogenic engine developed for the Vikram II rocket.<\/p>\n","protected":false},"author":5,"featured_media":7380,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-7379","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/7379","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=7379"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/7379\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/7380"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=7379"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=7379"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=7379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}