{"id":158624,"date":"2023-09-11T14:51:42","date_gmt":"2023-09-11T09:21:42","guid":{"rendered":"https:\/\/www.gkseries.com\/blog\/?p=158624"},"modified":"2023-09-11T14:51:43","modified_gmt":"2023-09-11T09:21:43","slug":"a-thin-airfoil-is-mounted-in-a-low-speed-subsonic-wind-tunnel-in-which-the-mach-number-is-0-1-at-a-point-on-the-airfoil","status":"publish","type":"post","link":"https:\/\/www.gkseries.com\/blog\/a-thin-airfoil-is-mounted-in-a-low-speed-subsonic-wind-tunnel-in-which-the-mach-number-is-0-1-at-a-point-on-the-airfoil\/","title":{"rendered":"A thin airfoil is mounted in a low-speed, subsonic wind tunnel, in which the Mach number is 0.1. At a point on the airfoil"},"content":{"rendered":"\n<p>Q. <span style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;\nfont-family:&quot;Times New Roman&quot;,serif;mso-fareast-font-family:&quot;Times New Roman&quot;;\nmso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA\">A thin airfoil is mounted in a low-speed, subsonic wind tunnel, in which the Mach number<span style=\"letter-spacing:.05pt\"> <\/span>is 0.1. At a point on the airfoil, the pressure coefficient is measured to be <\/span><span style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Symbol;\nmso-fareast-font-family:&quot;Times New Roman&quot;;mso-bidi-font-family:&quot;Times New Roman&quot;;\nmso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA\">&#8211;<\/span><span style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:&quot;Times New Roman&quot;,serif;\nmso-fareast-font-family:&quot;Times New Roman&quot;;mso-ansi-language:EN-US;mso-fareast-language:\nEN-US;mso-bidi-language:AR-SA\">1.2. If the flow<span style=\"letter-spacing:\n.05pt\"> <\/span>velocity is increased such that the free-stream Mach number is 0.6, the pressure coefficient<span style=\"letter-spacing:.05pt\"> <\/span>at<span style=\"letter-spacing:-.05pt\"> <\/span>the<span style=\"letter-spacing:-.05pt\"> <\/span>same point on the<span style=\"letter-spacing:-.05pt\"> <\/span>airfoil will approximately<span style=\"letter-spacing:-.3pt\"> <\/span>be:<\/span><\/p>\n\n\n\n<p>(A) -3.5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (B) -2.9\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (C) -1.5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (D) -0.75<\/p>\n\n\n\n<p>Ans: \u00a0-1.5<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Q. A thin airfoil is mounted in a low-speed, subsonic wind tunnel, in which the Mach number is 0.1. At a point on the airfoil, the pressure coefficient is measured to be &#8211;1.2. If the flow velocity is increased such that the free-stream Mach number is 0.6, the pressure coefficient at the same point on [&hellip;]<\/p>\n","protected":false},"author":419,"featured_media":158625,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[5141],"tags":[5140],"class_list":["post-158624","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gate","tag-gate-questions"],"_links":{"self":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/158624","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/users\/419"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/comments?post=158624"}],"version-history":[{"count":1,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/158624\/revisions"}],"predecessor-version":[{"id":158626,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/158624\/revisions\/158626"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/media\/158625"}],"wp:attachment":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/media?parent=158624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/categories?post=158624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/tags?post=158624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}