{"id":7873,"date":"2024-04-07T17:29:56","date_gmt":"2024-04-07T09:29:56","guid":{"rendered":"https:\/\/tommykwan.com\/blog\/?p=7873"},"modified":"2024-06-01T16:12:31","modified_gmt":"2024-06-01T08:12:31","slug":"hot-topic-turbofan-engine","status":"publish","type":"post","link":"https:\/\/tommykwan.com\/blog\/aviation\/hot-topic-turbofan-engine\/","title":{"rendered":"Hot topic : Turbofan Engine"},"content":{"rendered":"\r\n<p>How does a turbofan engine work?<\/p>\r\n\r\n\r\n\r\n<p><a href=\"https:\/\/aeroreport.de\/en\/video\/wie-funktioniert-ein-turbofan-triebwerk\">https:\/\/aeroreport.de\/en\/video\/wie-funktioniert-ein-turbofan-triebwerk<\/a><\/p>\r\n\r\n\r\n\r\n<p>Air is <strong>ingested, compressed, combusted<\/strong> and then <strong>expelled.\u00a0<\/strong><\/p>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<p>The GE90-115B on B777-300ER<\/p>\r\n<p><div class=\"embed-container\"><iframe loading=\"lazy\" title=\"How Jet Engines Work | Part 1 : Starting\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/AdCcbBhondA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div><\/p>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<p>Gearbox Turbofan Engine ?<\/p>\r\n\r\n\r\n\r\n<p><a href=\"https:\/\/aeroreport.de\/en\/good-to-know\/wie-funktioniert-ein-turbofan-triebwerk-aufbau-eines-triebwerk\">https:\/\/aeroreport.de\/en\/good-to-know\/wie-funktioniert-ein-turbofan-triebwerk-aufbau-eines-triebwerk<\/a><\/p>\r\n\r\n\r\n\r\n<p>In conventional engines, the low-pressure turbine and the fan sit on one shaft, but here the gearbox decouples the two components. This lets the components run at their optimum speed: the large-diameter fan slower, and the smaller-proportioned low-pressure compressor and low pressure turbine considerably faster. The gearbox is a planetary gear train with a reduction ratio of 3:1 or higher.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><\/figure>\r\n<p><div class=\"embed-container\"><iframe loading=\"lazy\" title=\"How Does a Turbofan Engine Work?\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/7v-lyKce7U8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div><\/p>\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<p>Start a 2-spool turbofan engine\uff0cwhy N2 first?<\/p>\r\n\r\n\r\n\r\n<p><a href=\"https:\/\/simpleflying.com\/how-do-jet-engine-startup-procedures-work\/\">https:\/\/simpleflying.com\/how-do-jet-engine-startup-procedures-work\/<\/a><\/p>\r\n\r\n\r\n\r\n<p>The low compressor stage is known as N1, and the high-pressure stage is known as N2. During the startup process, the N2 compressor is the one that needs to be rotated as most of the engine accessories (oil and hydraulic pumps, etc) are connected to this compressor.<\/p>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<p>However, it is in general speaking and only applicable on \u201ctraditional normal turbofan engine\u201d. Some of the turboprop engines may have another story<\/p>\r\n<p><div class=\"embed-container\"><iframe loading=\"lazy\" title=\"The BEST TURBOPROP explanation video! By Captain Joe and PRATT &amp; WHITNEY\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/B_p3_9si5D4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div><\/p>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<p>What is function of Compressor? \u9ede\u89e3\u8981Compressor?<\/p>\r\n\r\n\r\n\r\n<p><a href=\"https:\/\/www.boldmethod.com\/learn-to-fly\/aircraft-systems\/how-does-a-jet-engine-turbofan-system-work-the-basic-steps\/\">https:\/\/www.boldmethod.com\/learn-to-fly\/aircraft-systems\/how-does-a-jet-engine-turbofan-system-work-the-basic-steps\/<\/a><\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" class=\"wp-image-7881\" src=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2024\/04\/0a55414c-3cc3-4824-8a06-404738ba5640-7481-0000038bc7b595e0_file-300x200.jpg\" alt=\"\" srcset=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2024\/04\/0a55414c-3cc3-4824-8a06-404738ba5640-7481-0000038bc7b595e0_file-300x200.jpg 300w, https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2024\/04\/0a55414c-3cc3-4824-8a06-404738ba5640-7481-0000038bc7b595e0_file.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>In my understanding, the LPC (low pressure compressor) or HPC (high pressure compressor) are layers of blades &#8211; some are named as rotor (the moving part\/ rotational part) and some are named as stator (the non-moving part). The specific arrangement makes it work for its design function &#8211; when the air past through stages of compressor, the static pressure of the airflow will increase.<\/p>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<p>What about GE90-115B?<\/p>\r\n\r\n\r\n\r\n<p><a href=\"https:\/\/www.mtu.de\/engines\/commercial-aircraft-engines\/widebody-jets\/ge90-110b\/-115b\/\">https:\/\/www.mtu.de\/engines\/commercial-aircraft-engines\/widebody-jets\/ge90-110b\/-115b\/<\/a><\/p>\r\n\r\n\r\n\r\n<p>By the way, GE90-115B\u7684115\u6709\u54a9\u542b\u610f\uff1f<\/p>\r\n\r\n\r\n\r\n<p>115,000 <strong>pound<\/strong> force\uff01<\/p>\r\n<p>&nbsp;<\/p>\r\n<p>Read More &#8211;\u00a0<\/p>\r\n<p><a href=\"https:\/\/tommykwan.com\/blog\/aviation\/why-turbofan-engine-needs-high-bypass-ratio\/\">Why turbofan engine needs High bypass ratio? \u2013 Tommy&#8217;s Diaries (tommykwan.com)<\/a><\/p>\r\n<p>&nbsp;<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>How does a turbofan engine work? https:\/\/aeroreport.de\/en\/video\/wie-funktioniert-ein-turbofan-triebwerk Air is ingested, compressed, combusted and then expelled.\u00a0 &nbsp; The GE90-115B on B777-300ER &nbsp; Gearbox Turbofan Engine ? https:\/\/aeroreport.de\/en\/good-to-know\/wie-funktioniert-ein-turbofan-triebwerk-aufbau-eines-triebwerk In conventional engines, the low-pressure turbine and the fan sit on one shaft, but here the gearbox decouples the two components. This lets the components run at their optimum<a class=\"read-more \" href=\"https:\/\/tommykwan.com\/blog\/aviation\/hot-topic-turbofan-engine\/\" title=\"Read More\"> <span class=\"button default\">Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68,64],"tags":[],"class_list":["post-7873","post","type-post","status-publish","format-standard","hentry","category-atpl-knowledge","category-aviation"],"_links":{"self":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/7873","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/comments?post=7873"}],"version-history":[{"count":16,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/7873\/revisions"}],"predecessor-version":[{"id":8467,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/7873\/revisions\/8467"}],"wp:attachment":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/media?parent=7873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/categories?post=7873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/tags?post=7873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}