Lucas Bonomo - Acoustic Liners in the Aircraft Industry

Abstract:
Aircraft noise is a crucial aspect of air vehicle design. Since the early 1960s, with the advent of the turbofan revolution, fan noise has become one of the primary sources of aircraft noise. Due to its tonal signature, which is particularly annoying to humans, fan noise is one of the most penalised in aircraft certification. The main solution for fan noise mitigation is a group of structures commonly referred to as acoustic liners, typically applied to the interior walls of the turbofan nacelle. In this talk, I will introduce the key concepts of liner physical modelling, its experimental characterisation, and the basics of liner optimisation. Additionally, I will discuss the role these devices can play in the new revolution of the aircraft industry, whether in the electrification of traditional aircraft, towards propeller propulsion, or for novel air vehicle concepts such as eVTOLs.

Bio:
I am a PhD student under the supervision of Dr. Julio Cordioli at the Federal University of Santa Catarina (UFSC) in Brazil, currently undertaking an overseas exchange at the University of Warwick under the supervision of Dr. Ed Brambley. With more than seven years of experience in acoustic liners characterisation with grazing flow, my main interest lies in experimental aeroacoustics. Currently, I am working on the effects of sheared flow on impedance education techniques and co-supervising MSc. students in the development of propeller noise test rigs.