{"id":559526,"date":"2024-11-05T18:24:14","date_gmt":"2024-11-05T18:24:14","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-990172010\/"},"modified":"2024-11-05T18:24:14","modified_gmt":"2024-11-05T18:24:14","slug":"esdu-990172010","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-990172010\/","title":{"rendered":"ESDU 99017:2010"},"content":{"rendered":"

INTRODUCTION<\/strong><\/p>\n

This Data Item is the second of a series of examples of the
\napplication of a method for representing \u2013 and, if necessary,
\nrelating \u2013 the braking performances of aircraft and ground-test
\nmachines in wet conditions. The method, which is given in Reference
\n4, is essentially statistical and implies that there is a
\nclearly-defined level of probability that can be deduced from test
\nruns of an aircraft (or ground-test machine) in a given set of
\nwetness conditions on a particular runway. If the runway
\nmacro-texture depth is known, then the parameter that defines the
\nvariation of effective coefficient of braking friction in the given
\nconditions can be readily calculated from a pre-determined
\nFriction Data Base.<\/i> The concept of a Friction Data Base is
\nexplained in Reference 4.<\/p>\n

The Item uses test data collected from a short trial on a small
\ncombat aircraft to illustrate the way in which a very limited
\namount of information can be used to establish a Friction Data
\nBase. For this aircraft the data were limited in so far as the
\ntests were made on a single runway and the measured quantities were
\n"brakes-on" speed and stopping distance. The background to those
\ntests is described in Section 3. The methods of analysis are
\nsummarised and results are presented in Section 4.<\/p>\n

The first example, for an aircraft where an extensive set of
\ntest data is available, is given in Reference 5. An example of the
\napplication of the method to ground-test machine data is given in
\nReference 6. Many other examples are considered in Reference 3.<\/p>\n

If the method of Reference 4 is to be used to relate<\/i>
\nthe braking performances of a given combination of aircraft and
\nground-test machine, the procedure is comprised of two distinct
\nphases. The first is the establishment of separate Friction
\nData Bases<\/i> for the aircraft and for the ground-test machine.
\nThe second is the prediction of operational braking performance of
\nthe aircraft using day-to-day measurements from the ground-test
\nmachine.<\/p>\n","protected":false},"excerpt":{"rendered":"

Example of Statistical Analysis of Wet Runway Friction: Aircraft with Limited Set of Test Data<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ESDU<\/b><\/a><\/td>\n2010-09<\/td>\n15<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":559534,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-559526","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\/559526","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\/559534"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=559526"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=559526"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=559526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}