Engineering Sciences Data Unit (ESDU)

Aircraft tire performance on contaminated paved surface modeling by Engineering Sciences Data Unit (ESDU) is examined. Two elements naturally separate analytical work and the resulting mathematical model: retarding forces resulting from tire rolling and additional drag resulting from significant contaminant layer effects; and braking forces resulting from tire and surface interface. A case study of aircraft braking in loose snow is given. Limitations, including controllability and surfaces, are discussed. Inserts provide detail on state-of-the-art airfield friction measurement equipment and on ASFT, a family run business and leading surface friction measurement technology developer.