Aeroacoustic Phased Array Testing in Low Speed Wind Tunnels

Abstract

This chapter on Aeroacoustic Phased Array Testing in Low Speed Wind Tunnels provides comprehensive coverage of practical aspects for successfully deploying acoustic phased array measurement capability in low-speed wind tunnels. Non-intrusive requirements for acoustic measurement during aerodynamic testing are discussed including array design, construction, and installation. Instrumentation, data acquisition system, and data reduction system requirements are presented. Operational aspects that bring tractability to the demanding challenge of high-channel-count phased array acoustic measurements including calibration techniques, data visibility, and data management are also covered. The author's broad experience in successfully deploying acoustic phased array measurement technology in several venues including multiple High-Reynolds-Number Wind Tunnels provides proven insights for practicing engineers and advanced students interested in conducting aero acoustic tests.