{"id":3199,"date":"2022-12-17T00:00:00","date_gmt":"2022-12-17T00:00:00","guid":{"rendered":"https:\/\/www.nextias.com\/current_affairs\/uncategorized\/17-12-2022\/scramjet-engine-2\/"},"modified":"2025-09-23T18:42:45","modified_gmt":"2025-09-23T13:12:45","slug":"scramjet-engine-2","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/17-12-2022\/scramjet-engine-2","title":{"rendered":"Scramjet Engine"},"content":{"rendered":"<p><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>In News<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Recently, The <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Indian Space Research Organisation (ISRO) <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">has successfully conducted the <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Hot Test of Scramjet Engine.<\/strong><\/span><\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>What is a Scramjet Engine?<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>A scramjet (supersonic-combustion ramjet)<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"> is a ramjet engine in which the airflow through the engine remains supersonic, or greater than the speed of sound.\u00a0<\/span><\/span><\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>A scramjet has no shock cone <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">and slows the airflow using shockwaves produced by its ignition source in place of a shock cone.\u00a0<\/span><\/span><\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">This allows the scramjet to operate efficiently at extremely high speeds.<\/span><\/span><\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Scramjet powered vehicles are envisioned to <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>operate at speeds up to at least Mach 15.\u00a0<\/strong><\/span><\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>Difference Between Ramjet and Scramjet<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>A scramjet is a ramjet with supersonic combustion<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">. In ordinary ramjets, the air is decelerated to subsonic velocities before combustion, but this is not the case in a scramjet.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Ramjets have a velocity range of 1 to 6 Mach in theory, but Scramjets have a range of 12 to 24 Mach in theory.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Ramjets and scramjets <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>can\u2019t produce thrust at zero velocity, they need a lot of airflow to start.<\/strong><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Scramjets have a higher specific impulse than Ramjet.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Owing to subsonic combustion<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">, Ramjet has greater efficiency and operability than Scramjet, which has a lesser efficiency due to supersonic combustion.<\/span><\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Source: <\/span><\/span><\/span><a style=\"text-decoration: none;\" href=\"https:\/\/www.dailyexcelsior.com\/isros-hot-test-of-scramjet-engine-success\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #1155cc;\"><u>TH<\/u><\/span><\/span><\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In News Recently, The Indian Space Research Organisation (ISRO) has successfully conducted the Hot Test of Scramjet Engine. What is a Scramjet Engine? A scramjet (supersonic-combustion ramjet) is a ramjet engine in which the airflow through the engine remains supersonic, or greater than the speed of sound.\u00a0 A scramjet has no shock cone and slows [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3200,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[26,33],"class_list":["post-3199","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-current-affairs","tag-gs-3","tag-science-technology"],"acf":[],"jetpack_featured_media_url":"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2023\/07\/322719Screenshot_6.png","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/3199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=3199"}],"version-history":[{"count":1,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/3199\/revisions"}],"predecessor-version":[{"id":54951,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/3199\/revisions\/54951"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media\/3200"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=3199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=3199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=3199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}