DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Conceptual estimation of the noise reduction potential of electrified aircraft engines

Geyer, Thomas and Enghardt, Lars (2023) Conceptual estimation of the noise reduction potential of electrified aircraft engines. Acta Acustica, pp. 1-14. EDP Sciences. doi: 10.1051/aacus/2023009. ISSN 1022-4793.

[img] PDF - Published version

Official URL: https://acta-acustica.edpsciences.org/articles/aacus/full_html/2023/01/aacus220099/aacus220099.html


The advent of electrified propulsion systems for civil aircraft promises not only notable reductions of CO2 and NOx emissions, but also of perceived noise. In an attempt to estimate the noise reduction potential of fully electric aircraft engines, the current study compares the noise generated by classical turboprop and turbofan engines with noise spectra calculated for electrified engines. The calculation is based on published far-field sound pressure level spectra at different noise certification points, which are then modified to account for the absence of combustion-related noise sources. In addition to the overall sound pressure level, changes to the effective perceived noise level are also taken into account. The results clearly show that the electrification of the engine alone will not lead to the notable noise reductions that are required in order to achieve the goals for future aviation set by the European Commission. Instead, continued research is necessary to further reduce noise sources that will continue to be present in novel electrified aircraft systems, such as fan noise and airframe noise.

Item URL in elib:https://elib.dlr.de/195318/
Document Type:Article
Title:Conceptual estimation of the noise reduction potential of electrified aircraft engines
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Geyer, ThomasUNSPECIFIEDhttps://orcid.org/0000-0003-2380-1188136559184
Date:26 May 2023
Journal or Publication Title:Acta Acustica
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 1-14
Publisher:EDP Sciences
Keywords:Aircraft noise; Electrified aero engines; Electrification; Effective perceived noise level
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Clean Propulsion
DLR - Research area:Aeronautics
DLR - Program:L CP - Clean Propulsion
DLR - Research theme (Project):L - Components and Emissions
Location: Cottbus
Institutes and Institutions:Institute of Electrified Aero Engines
Deposited By: Geyer, Thomas
Deposited On:08 Jun 2023 14:53
Last Modified:19 Oct 2023 15:05

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.