Experimental Characterization of Supersonic Diamond Jet Acoustics

What is it about?

Noise from supersonic jets are of interest due to their deleterious effects on people and structures. As development of both military and commercial supersonic aircraft continues to grow, it is essential to combat increasing noise pollution. Circular jets are highly prevalent and their noise characteristics have been well-documented, whereas relatively few studies have examined non-circular jets. In this study, acoustics of supersonic jets produced by a diamond-shaped Mach 2 nozzle are explored across a large operational envelope. Microphone measurements of the jet were made in a recording studio (anechoic) environment to characterize the acoustics and contrast the distribution of noise between the major and minor axes of the nozzle.

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