Conceptual estimation of the noise reduction potential of electrified aircraft engines

The advent of electrified propulsion systems for civil aircraft promises not only notable reductions CO 2 and NO x emissions, but also perceived noise. In an attempt to estimate the noise reduction potential fully electric engines, current study compares generated by classical turboprop turbofan engines with spectra calculated engines. calculation is based on published far-field sound pressure level at different certification points, which are then modified account absence combustion-related sources. addition overall level, changes effective taken into account. results clearly show that electrification engine alone will lead required in order achieve goals future aviation set European Commission. Instead, continued research necessary further reduce sources continue be present novel systems, such as fan airframe