A modeling-based approach to relate ground friction measurements to aircraft braking performance
CEREZO ; GERTHOFFERT ; BOUTELDJA ; DO
Type de document
ARTICLE A COMITE DE LECTURE REPERTORIE DANS BDI (ACL)
Langue
francais
Auteur
CEREZO ; GERTHOFFERT ; BOUTELDJA ; DO
Résumé / Abstract
Aircraft performances at landing or takeoff depend strongly on runway surface conditions. There is a need to provide aircraft pilots with reliable information in view of determining landing performance. Currently, these information are based on a description of the type and the depth of contaminants on the runway surface. This paper presents a new method to improve the correlation between friction coefficients and braking coefficients measured respectively by ground vehicles and aircrafts. A three steps approach is proposed, using a friction model developed by ESDU, to weight the measured coefficients by factors taking into account the characteristics of the devices and of the contaminants. The friction ESDU model is used on contaminated surfaces. The methodology is applied to data collected from extensive friction tests conducted between 1996 and 2003 (Joint Winter Runaway Friction Measurement Program). Characteristics of ground friction measuring devices and aircrafts are provided as inputs for ESDU model. It was found that the correlation between weighted ground friction and braking coefficients is improved significantly compared with the correlation between unweighted coefficients. Advantages of the newly proposed method are discussed in terms of using ground friction coefficients as a promising alternative to determine Runway condition code for aircraft pilots.
Source
Journal of Aircraft, num. 1, pp.251-261 p.
Editeur
American Institute of Aeronautics and Astronautics
