Runway Roughness Studies in the Aeronautical Field

Attention is given to several phases of the runway roughness problem as it affects the operation of airplanes. Means for measuring roughness, and the manner of analyzing and presenting data so as to best indicate the nature of characteristics of the roughness, are presented. Various types of criteria for smoothness are then considered for new construction and as a guide for determining when repairs are necessary. Theoretical and experimental studies are also presented which deal with means for predicting the loads that develop in the airplane structure during taxiing. In this connection, available statistical loads data gathered during routine taxi operation of aircraft are reviewed.