Ricardo Moreno Benavides

PhD Thesis

Jet-noise Diagnostics with Massive Acoustic Camera

Supervisors

Marco Raiola (UC3M) & Luis Azpicueta (UC3M, Signal Theory and Communication Department)

Abstract

Aircraft noise remains a critical environmental challenge, particularly with the projected rise in global air traffic. Among the various noise sources, turbulent jet noise generated by the exhaust of modern turbofan engines constitutes a dominant component, necessitating advanced diagnostic approaches for its mitigation. This thesis addresses the development and application of a novel acoustic diagnostic tool designed for high-resolution jet-noise characterization. The research is conducted within the framework of the JAMAICAM project, which aims to construct a massive acoustic camera using a large array of low-cost MEMS microphones. This system is optimized for jet-noise studies through careful evaluation of sensor selection, array configuration, and beamforming algorithm performance. The resulting acoustic camera is validated in controlled laboratory experiments, demonstrating its capability to localize and analyze sound emission mechanisms in turbulent jets. The outcomes contribute to the broader objective of enabling effective noise-reduction strategies for future aircraft engine designs.

Doctoral Meetings