{"id":710354,"date":"2024-09-06T09:02:06","date_gmt":"2024-09-06T08:02:06","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=710354"},"modified":"2024-09-06T09:02:06","modified_gmt":"2024-09-06T08:02:06","slug":"lam-the-nao-mot-canh-ta-tao-ra-luc-nang","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/lam-the-nao-mot-canh-ta-tao-ra-luc-nang\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o m\u1ed9t c\u00e1nh t\u00e0 t\u1ea1o ra l\u1ef1c n\u00e2ng"},"content":{"rendered":"

L\u1ef1c n\u00e2ng c\u00e1nh t\u00e0 t\u1ea1o ra b\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng nguy\u00ean l\u00fd Bernoulli v\u00e0 h\u00ecnh d\u1ea1ng kh\u00ed \u0111\u1ed9ng h\u1ecdc, gi\u00fap m\u00e1y bay bay l\u00ean v\u00e0 duy tr\u00ec \u0111\u1ed9 cao \u1ed5n \u0111\u1ecbnh trong kh\u00f4ng trung.<\/p>\n

\"L\u00e0m<\/p>\n

L\u00e0m Th\u1ebf N\u00e0o M\u1ed9t C\u00e1nh T\u00e0 T\u1ea1o Ra L\u1ef1c N\u00e2ng<\/h2>\n

Trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch m\u00e0 m\u1ed9t c\u00e1nh t\u00e0 (flap) t\u1ea1o ra l\u1ef1c n\u00e2ng l\u00e0 r\u1ea5t quan tr\u1ecdng. L\u1ef1c n\u00e2ng l\u00e0 l\u1ef1c gi\u00fap m\u00e1y bay v\u00e0 c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n bay kh\u00e1c duy tr\u00ec v\u00e0 \u0111i\u1ec1u h\u01b0\u1edbng trong kh\u00f4ng kh\u00ed. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch m\u1ed9t c\u00e1nh t\u00e0 ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 t\u1ea1o ra l\u1ef1c n\u00e2ng.<\/p>\n

L\u1ef1c N\u00e2ng L\u00e0 G\u00ec?<\/h2>\n

L\u1ef1c n\u00e2ng l\u00e0 l\u1ef1c t\u00e1c \u0111\u1ed9ng vu\u00f4ng g\u00f3c v\u1edbi ph\u01b0\u01a1ng di chuy\u1ec3n c\u1ee7a v\u1eadt th\u1ec3, gi\u00fap n\u00e2ng v\u1eadt th\u1ec3 l\u00ean kh\u1ecfi m\u1eb7t \u0111\u1ea5t. Trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a m\u1ed9t c\u00e1nh t\u00e0, l\u1ef1c n\u00e2ng \u0111\u01b0\u1ee3c sinh ra do s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed di chuy\u1ec3n qua m\u1eb7t tr\u00ean v\u00e0 m\u1eb7t d\u01b0\u1edbi c\u1ee7a c\u00e1nh.<\/p>\n

C\u01a1 Ch\u1ebf Ho\u1ea1t \u0110\u1ed9ng C\u1ee7a C\u00e1nh T\u00e0<\/h2>\n

M\u1ed9t c\u00e1nh t\u00e0 g\u00f3p ph\u1ea7n v\u00e0o vi\u1ec7c thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng v\u00e0 g\u00f3c t\u1ea5n c\u00f4ng c\u1ee7a c\u00e1nh m\u00e1y bay. Khi c\u00e1nh t\u00e0 \u0111\u01b0\u1ee3c h\u1ea1 xu\u1ed1ng, n\u00f3 thay \u0111\u1ed5i lu\u1ed3ng kh\u00f4ng kh\u00ed ch\u1ea1y qua c\u00e1nh, d\u1eabn t\u1edbi thay \u0111\u1ed5i v\u1ec1 \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed v\u00e0 t\u1ea1o ra l\u1ef1c n\u00e2ng t\u0103ng th\u00eam. Quy tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch th\u00f4ng qua c\u00e1c b\u01b0\u1edbc sau:<\/p>\n

<\/p>\n

  • Thay \u0110\u1ed5i G\u00f3c T\u1ea5n C\u00f4ng:<\/b> C\u00e1nh t\u00e0 l\u00e0m t\u0103ng g\u00f3c t\u1ea5n c\u00f4ng (angle of attack) c\u1ee7a c\u00e1nh so v\u1edbi lu\u1ed3ng kh\u00f4ng kh\u00ed. Khi g\u00f3c t\u1ea5n c\u00f4ng t\u0103ng l\u00ean, lu\u1ed3ng kh\u00f4ng kh\u00ed ph\u1ea3i di chuy\u1ec3n xa h\u01a1n v\u00e0 nhanh h\u01a1n qua m\u1eb7t tr\u00ean c\u1ee7a c\u00e1nh, g\u00e2y ra s\u1ef1 gi\u1ea3m \u00e1p su\u1ea5t.<\/li>\n
  • S\u1ef1 Kh\u00e1c Bi\u1ec7t V\u1ec1 \u00c1p Su\u1ea5t:<\/b> S\u1ef1 thay \u0111\u1ed5i g\u00f3c t\u1ea5n c\u00f4ng v\u00e0 h\u00ecnh d\u1ea1ng c\u00e1nh t\u00e0 d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u1ea1o ra s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u00e1p su\u1ea5t gi\u1eefa m\u1eb7t tr\u00ean v\u00e0 m\u1eb7t d\u01b0\u1edbi c\u1ee7a c\u00e1nh. \u00c1p su\u1ea5t th\u1ea5p h\u01a1n \u1edf m\u1eb7t tr\u00ean l\u00e0m t\u0103ng l\u1ef1c n\u00e2ng.<\/li>\n

    <\/u1><\/p>\n

    C\u00f4ng Th\u1ee9c T\u00ednh L\u1ef1c N\u00e2ng<\/h2>\n

    L\u1ef1c n\u00e2ng (L) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c sau \u0111\u00e2y:<\/p>\n

    \n\\[ L = \\frac{1}{2} \\times \\rho \\times V^2 \\times S \\times C_L \\]\n<\/p>\n

    <\/p>\n

  • \u03c1:<\/b> M\u1eadt \u0111\u1ed9 kh\u00f4ng kh\u00ed<\/li>\n
  • V:<\/b> V\u1eadn t\u1ed1c kh\u00f4ng kh\u00ed ch\u1ea1y qua c\u00e1nh<\/li>\n
  • S:<\/b> Di\u1ec7n t\u00edch c\u1ee7a c\u00e1nh<\/li>\n
  • C_L:<\/b> H\u1ec7 s\u1ed1 l\u1ef1c n\u00e2ng, ph\u1ee5 thu\u1ed9c v\u00e0o h\u00ecnh d\u1ea1ng c\u1ee7a c\u00e1nh v\u00e0 g\u00f3c t\u1ea5n c\u00f4ng<\/li>\n

    <\/o1><\/p>\n

    K\u1ebft Lu\u1eadn<\/h2>\n

    C\u00e1nh t\u00e0 \u0111\u00f3ng vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng trong vi\u1ec7c t\u1ea1o ra v\u00e0 \u0111i\u1ec1u ch\u1ec9nh l\u1ef1c n\u00e2ng c\u1ee7a m\u00e1y bay. B\u1eb1ng c\u00e1ch thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng v\u00e0 g\u00f3c t\u1ea5n c\u00f4ng c\u1ee7a c\u00e1nh, c\u00e1nh t\u00e0 gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t bay v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho m\u00e1y bay trong qu\u00e1 tr\u00ecnh c\u1ea5t c\u00e1nh v\u00e0 h\u1ea1 c\u00e1nh. Vi\u1ec7c hi\u1ec3u r\u00f5 v\u1ec1 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1nh t\u00e0 kh\u00f4ng ch\u1ec9 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi k\u1ef9 s\u01b0 h\u00e0ng kh\u00f4ng m\u00e0 c\u00f2n \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai quan t\u00e2m \u0111\u1ebfn ng\u00e0nh h\u00e0ng kh\u00f4ng v\u00e0 k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n","protected":false},"excerpt":{"rendered":"

    L\u1ef1c n\u00e2ng c\u00e1nh t\u00e0 t\u1ea1o ra b\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng nguy\u00ean l\u00fd Bernoulli v\u00e0 h\u00ecnh d\u1ea1ng kh\u00ed \u0111\u1ed9ng h\u1ecdc, gi\u00fap m\u00e1y bay bay l\u00ean v\u00e0 duy tr\u00ec \u0111\u1ed9 cao \u1ed5n \u0111\u1ecbnh trong kh\u00f4ng trung.<\/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":"\nL\u00e0m th\u1ebf n\u00e0o m\u1ed9t c\u00e1nh t\u00e0 t\u1ea1o ra l\u1ef1c n\u00e2ng<\/title>\n<meta name=\"description\" content=\"L\u1ef1c n\u00e2ng c\u00e1nh t\u00e0 t\u1ea1o ra b\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng nguy\u00ean l\u00fd Bernoulli v\u00e0 h\u00ecnh d\u1ea1ng kh\u00ed \u0111\u1ed9ng h\u1ecdc, gi\u00fap m\u00e1y bay bay l\u00ean v\u00e0 duy tr\u00ec \u0111\u1ed9 cao \u1ed5n \u0111\u1ecbnh trong kh\u00f4ng trung.\" \/>\n<meta name=\"robots\" content=\"index, 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