RELATIONSHIP BETWEEN NOISE LEVELS AND EMISSIONS FROM AIRCRAFT TRANSITIONS AND FURTHER CONSIDERATIONS FOR NOISE REDUCTION

Takahiro Maeda; Hiroki Hasimoto; Naoaki Shinohara; Kazuyuki Hanaka

Paper Title

Authors

Takahiro Maeda
Hiroki Hasimoto
Naoaki Shinohara
Kazuyuki Hanaka

Modality

Onsite-Oral

Subject area

07.1. Airport Noise

Publishing Date

18/08/2025

Country of Publishing

Brazil | Brasil

Language of Publishing

Inglês

Paper Page

https://www.even3.com.br/anais/international-congress-exposition-noise-control-engineering/1073096-relationship-between-noise-levels-and-emissions-from-aircraft-transitions-and-further-considerations-for-noise-r

ISBN

978-65-272-1573-8

Keywords

aircraft,regulations,emissions

Summary

Over the past 30 years, aircraft single-event noise levels have been reduced by approximately 10 dB or more. This is due to ICAO's Balanced Approach source control measures (Annex 16) strengthening standards from Chapter 3 to Chapter 4 and then to Chapter 14. Currently, newly manufactured aircraft comply with the latest Chapter 14 standards. Although they are naturally quieter than previous types, the rate of aircraft compliant with the new standards is increasing year by year, and eventually the new standards will account for most of the aircraft in the market. On the other hand, it is necessary to consider not only noise but also air pollutant emissions from aircraft that affect human health. In this study, the relationship between aircraft noise and engine emissions certification values was examined. The ICAO established an engine emissions certification system addressing emissions like NOx, CO, HC, and PM. While noise, HC, and CO have decreased with each generation, the trends for PM and NOx were unclear. High-temperature combustion reduces noise, HC, and CO, but increases NOx.PM generation varies significantly with combustion temperature and combustor shape. Therefore, while new standards for noise are desirable for further reductions, NOx and PM emissions need separate regulations.

Title of the Event: Inter-Noise 2025
City of the Event: São Paulo
Title of the Proceedings of the event: Proceedings of the 54th International Congress and Exposition on Noise Control Engineering
Name of the Publisher: Even3
Means of Dissemination: Meio Digital

How to cite

MAEDA, Takahiro et al.. RELATIONSHIP BETWEEN NOISE LEVELS AND EMISSIONS FROM AIRCRAFT TRANSITIONS AND FURTHER CONSIDERATIONS FOR NOISE REDUCTION.. In: Proceedings of the 54th International Congress and Exposition on Noise Control Engineering. Anais...Sao Paulo(SP) WTC Events Center, 2025. Available in: https//www.even3.com.br/anais/international-congress-exposition-noise-control-engineering/1073096-RELATIONSHIP-BETWEEN-NOISE-LEVELS-AND-EMISSIONS-FROM-AIRCRAFT-TRANSITIONS-AND-FURTHER-CONSIDERATIONS-FOR-NOISE-R. Access in: 11/09/2025