{"id":30586,"date":"2025-03-06T09:56:24","date_gmt":"2025-03-06T04:26:24","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=30586"},"modified":"2025-04-11T08:39:00","modified_gmt":"2025-04-11T03:09:00","slug":"semi-cryogenic-engine","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/semi-cryogenic-engine\/","title":{"rendered":"Semi-Cryogenic Engine"},"content":{"rendered":"<h2>Semi-Cryogenic Engine Latest News\u00a0<\/h2>\n<p>ISRO recently successfully conducted the hot test on a semi-cryogenic engine (SE2000), coming closer to finalising the crucial cryogenic stage.<\/p>\n<h2>About Semi-Cryogenic Engine<\/h2>\n<ul>\n<li>A semi-cryogenic engine (SCE) is a liquid rocket engine that uses liquid oxygen (LOX) as an oxidizer and refined kerosene as fuel.\u00a0<\/li>\n<li>The Indian Space Research Organisation (ISRO) is developing a semi-cryogenic engine with a thrust of 2000 kN to power the booster stages of future heavy-lift launch vehicles. This engine utilizes a combination of liquid oxygen (LOX) and refined kerosene (RP-1) as propellants.\u00a0<\/li>\n<li>The semi-cryogenic engine offers several advantages over traditional cryogenic engines, including:\n<ul>\n<li><strong>Higher Density Impulse: <\/strong>The LOX-kerosene combination provides a higher density impulse compared to LOX-liquid hydrogen, resulting in improved performance.<\/li>\n<li><strong>Cost-Effectiveness:<\/strong> Kerosene is more cost-effective and easier to handle than liquid hydrogen, reducing overall mission costs.<\/li>\n<li><strong>Operational Efficiency:<\/strong> Kerosene can be stored at ambient temperatures, simplifying storage and handling requirements.<\/li>\n<\/ul>\n<\/li>\n<li>The development of this engine is expected to enhance the payload capacity of ISRO&#8217;s existing launch vehicles, such as the LVM3, and is also planned for use in future launch vehicles like the Next Generation Launch Vehicle (NGLV).<\/li>\n<\/ul>\n<h3>Difference Between Semi-Cryogenic Engine and Cryogenic Engine<\/h3>\n<ul>\n<li>Unlike a cryogenic engine, a semi-cryogenic engine uses refined kerosene instead of liquid hydrogen. The liquid oxygen is used as an oxidiser.\u00a0<\/li>\n<li>\u201cThe advantage of using a semi-cryogenic engine is that it requires refined kerosene, which is lighter than liquid fuel and can be stored at a normal temperature.<\/li>\n<\/ul>\n<h2>Semi-Cryogenic Engine FAQs<\/h2>\n<p><strong>Q1:<\/strong> What is a semi-cryo engine?<\/p>\n<p><strong>Ans: <\/strong>A semi-cryogenic engine is an advanced rocket propulsion system that uses liquid oxygen as an oxidizer and refined kerosene as fuel, offering higher thrust and improved payload capacity for space launches.<\/p>\n<p><strong>Q2.<\/strong> What is the difference between cryogenic and semi-cryogenic?<\/p>\n<p><strong>Ans: <\/strong>Cryogenic engines use liquid hydrogen and liquid oxygen, both stored at extremely low temperatures. Semi-cryogenic engines use refined kerosene (stored at room temperature) and liquid oxygen, simplifying fuel handling and increasing density.<\/p>\n<p><strong>Q3. <\/strong>What is the fuel in a semi-cryogenic engine?<\/p>\n<p><strong>Ans: <\/strong>The fuel used in a semi-cryogenic engine is refined kerosene, also known as RP-1 (Rocket Propellant-1). It is combined with liquid oxygen as the oxidizer to produce thrust.<\/p>\n<p><strong>Source: <\/strong><a href=\"https:\/\/indianexpress.com\/article\/cities\/bangalore\/isro-conducts-crucial-test-semi-cryogenic-engines-9870691\/\" target=\"_blank\" rel=\"nofollow noopener\">IE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Semi-cryogenic engines are advanced propulsion systems using liquid oxygen and refined kerosene.<\/p>\n","protected":false},"author":5,"featured_media":30587,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-30586","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\/30586","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=30586"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/30586\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/30587"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=30586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=30586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=30586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}