{"id":558775,"date":"2024-11-05T18:21:59","date_gmt":"2024-11-05T18:21:59","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-870331992\/"},"modified":"2024-11-05T18:21:59","modified_gmt":"2024-11-05T18:21:59","slug":"esdu-870331992","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-870331992\/","title":{"rendered":"ESDU 87033:1992"},"content":{"rendered":"<p>\n\tESDU 87033 provides an empirical method for predicting the change in normal force and pitching moment due to applying moderate boat-tailing to an axisymmetric forebody-cylinder combination. The method applies for Mach numbers from 0.2 to 5 and angles of attack up to 90 degrees and is derived from a correlation of wind-tunnel results drawn from the literature for bodies of fineness ratio from 3 to 13 with boat-tail angles between 2.5 and 10 degrees. The method predicts the change in normal-force coefficient (based on maximum cross-sectional area) to within 0.05 for values below 0.5 and within 10 per cent for greater values, and predicts the change in pitching-moment coefficient (based on maximum cross-sectional area and body overall length) to within 0.02. The use of the method is illustrated by a worked example. The calculation procedure is programmed in ESDUpac A9034, see ESDU 93034.\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Normal force and pitching moment of conical boat-tails<\/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>1992-07-01<\/td>\n<td>17<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":558785,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-558775","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\/558775","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\/558785"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=558775"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=558775"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=558775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}