Aeroacoustics

Aeroacoustics research at Maryland combines hover chamber and wind-tunnel experiments with acoustic measurements and advanced flow diagnostics to understand noise of Mach-scale rotors. 

Maryland's acoustic hover chamber is a 30-ft high 18-ft octagon with inlets and outlets to minimize recirculation. 

Single, stacked, co- and counter-rotating rotors, as well as small-scale multirotor UAS, of various shapes are tested under steady and dynamic conditions for fundamental understanding of noise, including broadband noise. The measured noise signature is used to develop and demonstrate innovative counter-UAS strategies. 

The collected data is widely used for advanced Computational Fluid Dynamics (CFD) validation and development of Artificial Intelligence/Machine Learning (AI/ML) tools.