Aeroacustic and Vibroacoustic Advancement in Aerospace and Automotive Systems

Roberto Citarella,Mattia Barbarino,Luigi Federico

doi:10.3390/app10113853

Roberto Citarella, Mattia Barbarino + Show 1 more

Open Access

https://doi.org/10.3390/app10113853

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Abstract

This Special Issue highlights the latest enhancements in the abatement of noise and vibrations of aerospace and automotive systems. The reduction of acoustic emissions and the improvement of cabin interior comfort are on the path of all major transportation industries, having a direct impact on customer satisfaction and, consequently, the commercial success of new products. Topics covered in this Special Issue deal with computational, instrumentation and data analysis of noise and vibrations of fixed wing aircrafts, satellites, spacecrafts, automotives and trains, ranging from aerodynamically generated noise to engine noise, sound absorption, cabin acoustic treatments, duct acoustics and vibroacoustic properties of materials. The focus of this Special Issue is also related to industrial aspects, e.g.,: numerical and experimental studies have been performed for an existing and commercialized engine to enable design improvements aimed at reducing noise and vibrations; moreover, an optimization is provided for the design of low vibroacoustic volute centrifugal compressors and fans whose fluids should be strictly kept in the system without any leakage. Existing procedures and algorithms useful to reach the abovementioned objectives in the most efficient way are illustrated in the collected papers.

Highlights

This Special Issue follows a previous one [1] on a similar topic, with the aim to keep on providing updates on state of the art research with reference to aeroacoustics and vibroacoustics in aerospace and automotive systems
The results show that steady tangential blowing on the airfoil upper surface can postpone the buffet onset margin and increase the lift coefficient at incidence angles near and above the buffet onset case of the clean airfoil
The multi-disciplinary optimization (MDO) procedure, based on an efficient global optimization (EGO)-like approach, is implemented to characterize acoustic sources that replicate the sound pressure field generated by the engines on the fuselage

Summary

Introduction

This Special Issue follows a previous one [1] on a similar topic, with the aim to keep on providing updates on state of the art research with reference to aeroacoustics and vibroacoustics in aerospace and automotive systems.In the following, a brief summary on the content of the papers included in this special issue, clustered based on a thematic criterion, starting with the spacecraft vehicles and satellites, moving to the automotive field, followed by the aeronautic field, the industry components for conditioning and, the railway transport system.In the section on spacecraft vehicles and satellites, the first paper is concerned with the vibration attenuation of meteorological satellites in the presence of periodic disturbances, leveraging on an optimal design of constant compensations against known-law periodic disturbances [2]. This Special Issue follows a previous one [1] on a similar topic, with the aim to keep on providing updates on state of the art research with reference to aeroacoustics and vibroacoustics in aerospace and automotive systems. A brief summary on the content of the papers included in this special issue, clustered based on a thematic criterion, starting with the spacecraft vehicles and satellites, moving to the automotive field, followed by the aeronautic field, the industry components for conditioning and, the railway transport system.

Results

Conclusion