{"id":559518,"date":"2024-11-05T18:24:12","date_gmt":"2024-11-05T18:24:12","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-990152010\/"},"modified":"2024-11-05T18:24:12","modified_gmt":"2024-11-05T18:24:12","slug":"esdu-990152010","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-990152010\/","title":{"rendered":"ESDU 99015:2010"},"content":{"rendered":"<p><strong>INTRODUCTION<\/strong><\/p>\n<p>This Data Item provides a method for representing \u2013 and, if<br \/>\nnecessary, relating \u2013 the braking performances of aircraft and<br \/>\nground-test machines in wet conditions. The method is essentially<br \/>\nstatistical and implies that there is a clearly-defined level of<br \/>\nprobability that can be deduced from test runs of an aircraft (or<br \/>\nground-test machine) in a given set of wetness conditions on a<br \/>\nparticular runway. If the runway macro-texture depth is known, then<br \/>\nthe parameter that defines the variation of effective coefficient<br \/>\nof braking friction in the given conditions can be readily<br \/>\ncalculated from a pre-determined <i>Friction Data Base.<\/i><\/p>\n<p><strong>Section 3<\/strong> defines the model used to represent<br \/>\nwet runway braking friction. <strong>Section 4<\/strong> describes<br \/>\nprocedures for generating a Friction Data Base for aircraft and<br \/>\nground-test machines and introduces examples based in existing test<br \/>\ndata. Section 5 discusses several ways in which Friction Data Bases<br \/>\ncan be used. Within the context of this Data Item the primary uses<br \/>\nare,<\/p>\n<p>to represent measured aircraft braking performance data on a<br \/>\nstatistical basis,<\/p>\n<p>to provide means of <i>relating<\/i> the braking performances<br \/>\nof ground-test machines and aircraft.<\/p>\n<p><strong>Section 6<\/strong> addresses the possibilities of<br \/>\ninterpreting existing Friction Data Bases for use elsewhere.<\/p>\n<p><strong>Section 7<\/strong> reviews the limitations of the method<br \/>\nand various aspects of its implementation.<\/p>\n<p>If the method is to be used to <i>relate<\/i> the braking<br \/>\nperformances of a given combination of aircraft and ground-test<br \/>\nmachine, the procedure comprises two distinct phases. The first is<br \/>\nthe establishment of separate <i>Friction Data Bases<\/i> for the<br \/>\naircraft and for the ground-test machine. The second is the<br \/>\nprediction of operational braking performance of the aircraft from<br \/>\nday-to-day measurements from the ground-test machine.<\/p>\n<p>ESDU 99016 and ESDU 99017 (References 7 and 8) provide two<br \/>\nexamples of the derivation of Friction Data Bases for individual<br \/>\naircraft. The former of these considers an aircraft for which an<br \/>\nextensive set of test data is available; the latter considers an<br \/>\naircraft for which a limited set of test data is available.<br \/>\nReference 9 provides a detailed example for a ground-test<br \/>\nmachine.<\/p>\n<p>See Reference 42 for methods appropriate to runways contaminated<br \/>\nwith significant depths of water, slush, snow or ice. Reference 3<br \/>\ngives a general introduction to many aspects of aircraft ground<br \/>\nperformance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Statistical Analysis of Wet Runway Friction for Aircraft and Ground-Test Machines<\/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>2010-09<\/td>\n<td>41<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":559528,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-559518","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\/559518","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\/559528"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=559518"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=559518"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=559518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}