{"id":557224,"date":"2024-11-05T18:17:21","date_gmt":"2024-11-05T18:17:21","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-010052001\/"},"modified":"2024-11-05T18:17:21","modified_gmt":"2024-11-05T18:17:21","slug":"esdu-010052001","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-010052001\/","title":{"rendered":"ESDU 01005:2001"},"content":{"rendered":"<p>\n\tESDU 01005 provides a means of predicting the type of pitch-break likely to be encountered for a given wing planform shape at low speeds. The method has been developed for wings alone and wing-body configurations and is based on an analysis of a large quantity of experimental data. Either pitch-up or pitch-down can occur depending mainly on planform shape through its influence on the flow field. It was found that characterising the planform by the parameter A tan alpha, where A is aspect ratio and alpha is quarter-chord sweep, was adequate to define the type of pitch-break. For A tan alpha less than 2.6 pitch-down occurred while for A tan alpha greater than 3 pitch-up occurred, with either type of break being possible for values in between. Where a planform has varying amounts of sweep across each semi-span, ESDU 76003 is used to define an &#039;equivalent&#039; straight-tapered wing. The values of the geometric parameters defining the range of planform shapes for which data were available are tabulated and show that the method applies to a wide range of wing planforms, including swept-forward geometries. Its high reliability is illustrated by sketches showing all the data on plots of A versus tan alpha. Two fully worked examples illustrate the use of the method.\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Effect of Geometry on Low-Speed Pitch-Break Characteristics of Swept Wings<\/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>2001-10-01<\/td>\n<td>20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":557232,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-557224","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\/557224","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\/557232"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=557224"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=557224"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=557224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}