NACA research memorandum RM (series). A58E21n. Forces and pitching moments on aspect-ratio-3.1 wing-body combination at Mach numbers from 2.5 to 3.5 and sublimation studies of effect of single-element roughness on boundary-layer flow [with list of references]; by Edward J. Hopkins, Stephen J. Keating, jr., and Richard R. Muhl.