{"id":15269,"date":"2021-06-16T09:48:35","date_gmt":"2021-06-16T13:48:35","guid":{"rendered":"https:\/\/engineering.jhu.edu\/magazine-archive\/?p=15269"},"modified":"2021-06-16T09:48:35","modified_gmt":"2021-06-16T13:48:35","slug":"upstarts-less-polluting-cargo-ships","status":"publish","type":"post","link":"https:\/\/engineering.jhu.edu\/magazine-archive\/2021\/06\/upstarts-less-polluting-cargo-ships\/","title":{"rendered":"Upstarts: Less-Polluting Cargo Ships"},"content":{"rendered":"\"\"\n

An integral part of our global economy, maritime shipping accounts for almost 3% of global carbon dioxide emissions, and experts at the International Maritime Organization expect that percentage to rise 50% to 250% by 2050 if no action is taken.<\/p>\n

A team of Johns Hopkins mechanical engineers<\/a> has put a new spin on an old idea: Make modern cargo ships more efficient\u2014and less polluting\u2014by adding a new mechanism to a rotor that is increasingly in use as a cleaner propulsion system.<\/p>\n

\u201cWe have added a mechanism to the Flettner rotor that imparts localized suction to it,\u201d says Rajat Mittal<\/a>, a professor of mechanical engineering. \u201cOur design enhancement leads to an increase of 80% to 180% in rotor thrust, and an increased efficiency that translates to significant reduction in carbon dioxide emissions.\u201d<\/p>\n

The team, which also includes mechanical engineers Rui Ni<\/a> and Jung-Hee Seo<\/a>, has validated its design through computer models and simulations, and is working with Johns Hopkins Technology Ventures<\/a> to commercialize it.<\/p>\n

\u201cIf the shipping industry was a country, it would rank sixth in the world carbon dioxide emissions league table,\u201d Mittal says. \u201cEven a small increase in the efficiency of a ship propulsion, such as via our invention, could have a significant impact on pollution and global warming.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"

A team of Johns Hopkins mechanical engineers has put a new spin on an old idea: Make modern cargo ships more efficient\u2014and less polluting\u2014by adding a new mechanism to a rotor that is increasingly in use as a cleaner propulsion system.<\/p>\n","protected":false},"author":4,"featured_media":15272,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[24],"tags":[],"class_list":["post-15269","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-impact","issue-summer-2021"],"acf":[],"yoast_head":"\nUpstarts: Less-Polluting Cargo Ships - JHU Engineering Magazine<\/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:\/\/engineering.jhu.edu\/magazine-archive\/2021\/06\/upstarts-less-polluting-cargo-ships\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Upstarts: Less-Polluting Cargo Ships - 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