{"id":29196,"date":"2019-11-15T03:00:50","date_gmt":"2019-11-15T02:00:50","guid":{"rendered":"https:\/\/www.cde.ual.es\/?p=29196"},"modified":"2019-11-26T11:47:46","modified_gmt":"2019-11-26T10:47:46","slug":"seeking-energy-efficiency-in-aircrafts","status":"publish","type":"post","link":"https:\/\/www.cde.ual.es\/en\/seeking-energy-efficiency-in-aircrafts\/","title":{"rendered":"Seeking energy efficiency in aircrafts"},"content":{"rendered":"<div class=\"teaser-text\">\n<p><em><strong>An emphasis on reducing the environmental impact of aircraft means EU-funded scientists have been researching ways to reduce drag using an aircraft\u2019s small, active components to make them more energy-efficient and reduce emissions.<\/strong><\/em><\/p>\n<p><a href=\"https:\/\/www.cde.ual.es\/wp-content\/uploads\/2019\/05\/aeroplane-aircraft-airplane-46148-e1573455821251.jpg\"><img decoding=\"async\" class=\"size-medium wp-image-17747 aligncenter\" src=\"https:\/\/www.cde.ual.es\/wp-content\/uploads\/2019\/05\/aeroplane-aircraft-airplane-46148-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" \/><\/a><\/p>\n<p>Reductions in carbon dioxide and nitrogen oxide emissions from aircraft are directly related to an aircraft\u2019s fuel burn, drag and aircraft weight. So reducing surface drag \u2013 which impedes forward movement during flight \u2013 will help reduce the environmental impacts of harmful emissions.<\/p>\n<p><em>\u201cIt is not just the shape of the airframe but also some devices which act on the flow field that determines drag,\u201d<\/em> says DRAGY project coordinator Gabriel Bugeda, Professor of Civil and Environmental Engineering at the International Centre for Numerical Methods in Engineering (CIMNE), at the Technical University of Catalunya (UPC), in Barcelona, Spain.<\/p>\n<div class=\"ng-star-inserted\">\n<h3 class=\"general-text ng-star-inserted\">Promising devices<\/h3>\n<\/div>\n<\/div>\n<div class=\"ng-star-inserted\">\n<p>Riblets, and other devices such as plasma actuators, where a small amount of air is injected into the flow field using plasma devices, can reduce drag. <em>\u201cThese are the two most promising devices,\u201d<\/em> says Bugeda, adding that pulse jets, which inject a specific amount of fluid in a pulsating action rather than steady stream, and rotating discs, to inject additional momentum of fluid, also have potential.<\/p>\n<p><em>\u201cWe arrived at the conclusion that some of these devices can produce up to 40 % surface drag reduction \u2013 so this is new \u2013 but it is still at a very low level of technological development,\u201d<\/em> notes Bugeda.<\/p>\n<p>Nonetheless, with fuel costs at least 30 % of a commercial aircraft\u2019s operating costs, it could represent a significant saving. But there is also a payoff because: <em>\u201cThese devices have some weight and need some energy to work and we have not yet evaluated the \u2018cost\u2019 of these, but it is nonetheless a significant finding.\u201d<\/em><\/p>\n<h3>Further steps<\/h3>\n<p>Scaling up is still a major challenge.\u00a0Bugeda notes. <em>\u201cIt is not easy to extrapolate the results of these [laboratory scale] experiments to real-sized aircraft.\u201d<\/em><\/p>\n<p>As the project is a collaboration between European institutions and China, with the costs in China covered by the Ministry of Industry and Information Technology in Beijing, the project was able to take advantage of large-scale experimental facilities at Zhejiang University, Northwestern Polytechnical University, Peking University and Beijing University of Aeronautics and Astronautics.<\/p>\n<div class=\"ng-star-inserted\">\n<p class=\"general-text ng-star-inserted\">For the numerical analysis, the main difficulty is the amount of computer power needed, Bugeda explains. <em>\u201cIt is not yet market ready,\u201d<\/em> Bugeda says, noting that future collaboration projects would further develop such technologies for use in real aircraft.<\/p>\n<\/div>\n<h3 class=\"ng-star-inserted\">More information<\/h3>\n<div><a href=\"https:\/\/cordis.europa.eu\/project\/rcn\/199572\/brief\/en\" target=\"_blank\" rel=\"noopener\">Full news<\/a><\/div>\n<div><a href=\"https:\/\/www.scipedia.com\/institution\/cimne.upc.edu\">International Centre for Numerical Methods in Engineering<\/a><\/div>\n<div><a href=\"https:\/\/www.cde.ual.es\/en\/research\/\">R+I<\/a> Section<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>An emphasis on reducing the environmental impact of aircraft means EU-funded scientists have been researching ways to reduce drag using an aircraft\u2019s small, active components to make them more energy-efficient and reduce emissions. Reductions in carbon dioxide and nitrogen oxide emissions from aircraft are directly related to an aircraft\u2019s fuel burn, drag and aircraft weight. [&hellip;]<\/p>\n","protected":false},"author":101012,"featured_media":17748,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[346],"tags":[354,404,350,433],"class_list":{"0":"post-29196","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-eu-news","8":"tag-innovacion-en","9":"tag-innovation","10":"tag-investigacion-en","11":"tag-research","12":"entry"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Seeking energy efficiency in aircrafts | CDE Almer\u00eda - Centro de Documentaci\u00f3n Europea - Universidad de Almer\u00eda<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cde.ual.es\/en\/seeking-energy-efficiency-in-aircrafts\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Seeking energy efficiency in aircrafts | CDE Almer\u00eda - Centro de Documentaci\u00f3n Europea - Universidad de Almer\u00eda\" \/>\n<meta property=\"og:description\" content=\"An emphasis on reducing the environmental impact of aircraft means EU-funded scientists have been researching ways to reduce drag using an aircraft\u2019s small, active components to make them more energy-efficient and reduce emissions. Reductions in carbon dioxide and nitrogen oxide emissions from aircraft are directly related to an aircraft\u2019s fuel burn, drag and aircraft weight. 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