{"id":557802,"date":"2024-11-05T18:19:08","date_gmt":"2024-11-05T18:19:08","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-700112012\/"},"modified":"2024-11-05T18:19:08","modified_gmt":"2024-11-05T18:19:08","slug":"esdu-700112012","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-700112012\/","title":{"rendered":"ESDU 70011:2012"},"content":{"rendered":"<p>ESDU 70011 presents data for the lift-curve slope and<br \/>\naerodynamic centre position for wings with straight leading- and<br \/>\ntrailing-edges and streamwise tips in subsonic flow. The data were<br \/>\nderived from lifting-surface theory and are presented in carpet<br \/>\nform for \u00dfA up to 12,<br \/>\nAtan?<sub><br \/>\n\u00bd<\/sub> up to 6 and taper ratio (<span lang=\"EN\">?<\/span>) from 0<br \/>\nto 1, where A is aspect ratio, \u00df is (1 \u2013<br \/>\n<i>M<\/i><sup>2<\/sup>)<sup>\u00bd<\/sup> where <i>M<\/i> is Mach<br \/>\nnumber, and<br \/>\n?<sub><br \/>\n\u00bd<\/sub> is the half-chord sweep. The data can be applied to other<br \/>\nthan straight-tapered planforms by means of the equivalent wing<br \/>\nplanform concept (ESDU 76003 or ESDU 76015). Comparisons with a<br \/>\nwide range of test data indicate that the lift-curve slope of wings<br \/>\non wing-body combinations is predicted to within about 5% and that<br \/>\naerodynamic centre position is predicted generally to within 0.03<br \/>\nof the aerodynamic mean chord.<\/p>\n<p>A computer program of the method (ESDUpac A7011) is provided.<br \/>\nThe program, which includes an extension to cover wings with<br \/>\nmodestly swept forward half-chord lines, can be run online at<br \/>\nesdu.com.<\/p>\n<p>For information, an improved form of the Helmbold-Diederich<br \/>\nequation for wing lift-curve slope is given which provides<br \/>\npredictions largely within \u00b12% of the values obtained from this<br \/>\nData Item for \u00dfA\u00a0<u>&gt;<\/u> 1.5.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Lift-curve slope and aerodynamic center position of wings in inviscid subsonic flow<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/esdu\/\"><b>ESDU<\/b><\/a><\/td>\n<td>2012-03-01<\/td>\n<td>36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":557813,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-557802","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-esdu","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/557802","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/557813"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=557802"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=557802"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=557802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}