{"id":696843,"date":"2024-07-26T12:18:36","date_gmt":"2024-07-26T11:18:36","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=696843"},"modified":"2024-07-26T12:18:36","modified_gmt":"2024-07-26T11:18:36","slug":"khi-dong-hoc-cua-xe-dua","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/khi-dong-hoc-cua-xe-dua\/","title":{"rendered":"Kh\u00ed \u0111\u1ed9ng h\u1ecdc c\u1ee7a xe \u0111ua"},"content":{"rendered":"<p class=\"sidekick\">Kh\u00ed \u0111\u1ed9ng h\u1ecdc c\u1ee7a xe \u0111ua: t\u00ecm hi\u1ec3u c\u00e1ch thi\u1ebft k\u1ebf xe \u0111ua t\u1ed1i \u01b0u h\u00f3a lu\u1ed3ng kh\u00ed, gi\u1ea3m l\u1ef1c c\u1ea3n, t\u0103ng t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u su\u1ea5t trong c\u00e1c cu\u1ed9c \u0111ua t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/khi_dong_hoc_cua_xe_dua.png\" alt=\"Kh\u00ed \u0111\u1ed9ng h\u1ecdc c\u1ee7a xe \u0111ua\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Kh\u00ed \u0111\u1ed9ng h\u1ecdc c\u1ee7a xe \u0111ua<\/h2>\n<p>Kh\u00ed \u0111\u1ed9ng h\u1ecdc l\u00e0 m\u1ed9t nh\u00e1nh c\u1ee7a ng\u00e0nh c\u01a1 h\u1ecdc ch\u1ea5t l\u1ecfng, t\u1eadp trung v\u00e0o nghi\u00ean c\u1ee9u v\u00e0 ph\u00e2n t\u00edch c\u00e1ch th\u1ee9c kh\u00f4ng kh\u00ed t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c v\u1eadt th\u1ec3 chuy\u1ec3n \u0111\u1ed9ng. \u0110\u1ed1i v\u1edbi xe \u0111ua, kh\u00ed \u0111\u1ed9ng h\u1ecdc \u0111\u00f3ng vai tr\u00f2 r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 t\u1ed1c \u0111\u1ed9.<\/p>\n<h2>Nguy\u00ean l\u00fd c\u01a1 b\u1ea3n<\/h2>\n<ul>\n<li><strong>L\u1ef1c c\u1ea3n kh\u00f4ng kh\u00ed:<\/strong> M\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a xe \u0111ua l\u00e0 l\u1ef1c c\u1ea3n kh\u00f4ng kh\u00ed, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <em>drag<\/em>. L\u1ef1c c\u1ea3n n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00f4ng th\u1ee9c sau:<br \/>\n        \\[<br \/>\n        F_d = \\frac{1}{2} \\rho v^2 C_d A<br \/>\n        \\]\n        Trong \u0111\u00f3:<\/p>\n<ul>\n<li>\\( F_d \\): L\u1ef1c c\u1ea3n kh\u00f4ng kh\u00ed<\/li>\n<li>\\( \\rho \\): M\u1eadt \u0111\u1ed9 kh\u00f4ng kh\u00ed<\/li>\n<li>\\( v \\): V\u1eadn t\u1ed1c c\u1ee7a xe<\/li>\n<li>\\( C_d \\): H\u1ec7 s\u1ed1 c\u1ea3n kh\u00f4ng kh\u00ed<\/li>\n<li>\\( A \\): Di\u1ec7n t\u00edch ch\u1ecbu c\u1ea3n c\u1ee7a xe<\/li>\n<\/ul>\n<\/li>\n<li><strong>L\u1ef1c n\u00e2ng:<\/strong> L\u1ef1c n\u00e2ng, hay <em>lift<\/em>, l\u00e0 m\u1ed9t l\u1ef1c kh\u00ed \u0111\u1ed9ng h\u1ecdc c\u00f3 th\u1ec3 n\u00e2ng ho\u1eb7c \u0111\u00e8 xe xu\u1ed1ng. \u0110\u1ed1i v\u1edbi xe \u0111ua, l\u1ef1c n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e8 xe xu\u1ed1ng, t\u0103ng \u0111\u1ed9 b\u00e1m \u0111\u01b0\u1eddng.<\/li>\n<li><strong>Hi\u1ec7n t\u01b0\u1ee3ng x\u00e1o \u0111\u1ed9ng kh\u00f4ng kh\u00ed:<\/strong> Khi xe di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 cao, hi\u1ec7n t\u01b0\u1ee3ng x\u00e1o \u0111\u1ed9ng kh\u00f4ng kh\u00ed x\u1ea3y ra xung quanh th\u00e2n xe. Vi\u1ec7c thi\u1ebft k\u1ebf c\u00e1c chi ti\u1ebft kh\u00ed \u0111\u1ed9ng h\u1ecdc nh\u01b0 c\u00e1nh gi\u00f3, khu\u1ebfch t\u00e1n \u0111\u1eb1ng sau gi\u00fap gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y.<\/li>\n<\/ul>\n<h2>\u1ee8ng d\u1ee5ng trong thi\u1ebft k\u1ebf xe \u0111ua<\/h2>\n<ol>\n<li><strong>C\u00e1nh gi\u00f3 tr\u01b0\u1edbc v\u00e0 sau:<\/strong> C\u00e1c c\u00e1nh gi\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1ea1o l\u1ef1c \u0111\u00e8 xu\u1ed1ng (downforce), gi\u00fap xe b\u00e1m \u0111\u01b0\u1eddng t\u1ed1t h\u01a1n khi v\u00e0o cua v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9.<\/li>\n<li><strong>C\u00e1c chi ti\u1ebft khu\u1ebfch t\u00e1n:<\/strong> C\u00e1c chi ti\u1ebft khu\u1ebfch t\u00e1n kh\u00f4ng kh\u00ed \u1edf ph\u1ea7n \u0111u\u00f4i xe gi\u00fap gi\u1ea3m l\u1ef1c c\u1ea3n v\u00e0 x\u00e1o \u0111\u1ed9ng kh\u00f4ng kh\u00ed, c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t \u0111\u1ed9ng c\u01a1.<\/li>\n<li><strong>\u0110\u1ed9 nh\u1eb5n c\u1ee7a b\u1ec1 m\u1eb7t:<\/strong> Vi\u1ec7c gi\u1ea3m \u0111\u1ed9 nh\u00e1m c\u1ee7a b\u1ec1 m\u1eb7t xe gi\u00fap gi\u1ea3m l\u1ef1c c\u1ea3n kh\u00f4ng kh\u00ed. C\u00e1c xe \u0111ua th\u01b0\u1eddng s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u nh\u1eb9 v\u00e0 nh\u1eb5n \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a \u0111i\u1ec1u n\u00e0y.<\/li>\n<\/ol>\n<p>Kh\u00ed \u0111\u1ed9ng h\u1ecdc l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 thi\u1ebfu trong vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 ph\u00e1t tri\u1ec3n xe \u0111ua. Vi\u1ec7c hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng c\u00e1c nguy\u00ean l\u00fd kh\u00ed \u0111\u1ed9ng h\u1ecdc gi\u00fap t\u1ed1i \u01b0u h\u00f3a kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh v\u00e0 \u0111\u1ea3m b\u1ea3o s\u1ef1 an to\u00e0n cho c\u00e1c tay \u0111ua.<\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Vi\u1ec7c t\u1ed1i \u01b0u ho\u00e1 kh\u00ed \u0111\u1ed9ng h\u1ecdc kh\u00f4ng ch\u1ec9 gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 m\u00e0 c\u00f2n c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t v\u00e0 an to\u00e0n cho xe \u0111ua. Do \u0111\u00f3, n\u00f3 l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu trong ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111ua xe v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 nghi\u00ean c\u1ee9u k\u1ef9 l\u01b0\u1ee1ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kh\u00ed \u0111\u1ed9ng h\u1ecdc c\u1ee7a xe \u0111ua: t\u00ecm hi\u1ec3u c\u00e1ch thi\u1ebft k\u1ebf xe \u0111ua t\u1ed1i \u01b0u h\u00f3a lu\u1ed3ng kh\u00ed, gi\u1ea3m l\u1ef1c c\u1ea3n, t\u0103ng t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u su\u1ea5t trong c\u00e1c cu\u1ed9c \u0111ua t\u1ed1c \u0111\u1ed9 cao.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kh\u00ed \u0111\u1ed9ng h\u1ecdc c\u1ee7a xe \u0111ua<\/title>\n<meta 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