- Performance of Centerbody Vortex Generators I N a N Axisymmetric Mixed - Compression Inlet at Mach Numbers from 2 . 0 to 3 . 0

Three vortex-generator configurations were installed aft of the inlet throat on the centerbody of a Mach 3 . 0 mixed-compression inlet. The three were about equal in im­ proving diffuser pressure recovery and all produced significant, although unequal, reduc­ tions in distortion. Only the most densely spaced configuration generated vortices that dissipated before reaching the compressor face. Vortex generators effectively energized the normally retarded flow adjacent to the centerbody even during supercritical operation where they were immersed in supersonic flow. Generators were also effective at inlet angles of attack to a t least 5'.