The mean skin friction coefficient for a rough flat plate with a turbulent two-dimensional boundary layer in compressible adiabatic flow@ with application to wedges@ cylinders and cones.
ESDU 73016 gives curves and an equation for the value of Reynolds number based on distance along the plate above which an increase in roughness height will not affect skin friction drag. Also given are curves for the mean skin friction on an aerodynamically smooth@ or a fully rough@ plate at zero incidence for Mach numbers from 0 to 5 for various roughness heights. The use of the data for cylinders@ and for cones and wedges in supersonic flow@ is explained. Comparison with experimental data shows an r.m.s. error of 3 per cent in incompressible flow rising to 9 per cent for compressible adiabatic flow.