{"id":7468,"date":"2024-02-25T22:20:36","date_gmt":"2024-02-25T14:20:36","guid":{"rendered":"https:\/\/tommykwan.com\/blog\/?p=7468"},"modified":"2024-02-25T23:13:16","modified_gmt":"2024-02-25T15:13:16","slug":"%e9%bb%9e%e8%a7%a3vortices-%e4%bf%82-wingtip-the-formation-of-wingtip-vortices","status":"publish","type":"post","link":"https:\/\/tommykwan.com\/blog\/aviation\/%e9%bb%9e%e8%a7%a3vortices-%e4%bf%82-wingtip-the-formation-of-wingtip-vortices\/","title":{"rendered":"\u9ede\u89e3vortices \u4fc2 wingtip ?  The formation of wingtip vortices~"},"content":{"rendered":"<p>Ref Ch5<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Ans:<\/strong><\/p>\n<ul>\n<li><strong>pressure differential<\/strong> (between upper and lower surfaces of wing)<\/li>\n<li>air <strong>always<\/strong> moves from <strong>high<\/strong> pressure<strong> to<\/strong>ward <strong>low<\/strong> pressure<\/li>\n<li>bottom : <strong>span-wise movement<\/strong> of air\u00a0 (outward from fuselage to and around tips)<\/li>\n<li>upper surface : span-wise movement\u00a0 (flow in toward fuselage and off the trailing edge)<\/li>\n<li><strong>fuselage limits<\/strong> the <strong>inward flow<\/strong> &#8211; vortex is insignificant<\/li>\n<li>Consequently,\u00a0 greatest at the <strong>outer tips<\/strong> where the <strong>unrestricted<\/strong> lateral flow is the strongest<\/li>\n<li>air <strong>curls<\/strong> upward <strong>around the tip<\/strong> and<strong> combines with<\/strong> <strong>downwash<\/strong> to form a fast-spinning trailing vortex<\/li>\n<li>the vortices increase drag &#8211; <strong>cause turbulence<\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Ref Ch5 &nbsp; Ans: pressure differential (between upper and lower surfaces of wing) air always moves from high pressure toward low pressure bottom : span-wise movement of air\u00a0 (outward from fuselage to and around tips) upper surface : span-wise movement\u00a0 (flow in toward fuselage and off the trailing edge) fuselage limits the inward flow &#8211;<a class=\"read-more \" href=\"https:\/\/tommykwan.com\/blog\/aviation\/%e9%bb%9e%e8%a7%a3vortices-%e4%bf%82-wingtip-the-formation-of-wingtip-vortices\/\" 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":[64,65],"tags":[],"class_list":["post-7468","post","type-post","status-publish","format-standard","hentry","category-aviation","category-bak"],"_links":{"self":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/7468","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=7468"}],"version-history":[{"count":5,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/7468\/revisions"}],"predecessor-version":[{"id":7490,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/7468\/revisions\/7490"}],"wp:attachment":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/media?parent=7468"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/categories?post=7468"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/tags?post=7468"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}