Free-flight measurements of turbulent-boundary-layer skin friction in the presence of severe aerodynamic heating at Mach numbers from 2.8 to 7.0

Abstract

Report presenting experimental measurements of average skin friction of the turbulent boundary layer on free-flying, hollow-cylinder models at four Mach numbers at conditions of high rates of heat transfer. The data of the investigation indicates that increasing skin-friction ratio with increasing heat-transfer rates will persist up to Mach numbers as high as 7. Results regarding skin-friction ratio and the T' method for evaluating skin friction are provided.