Abstract
The Italian research project PROSIB (PROpulsione e Sistemi IBridi per velivoli ad ala fissa e rotante), is a 30-month initiative funded by the Italian Ministry of University and Scientific Research (MIUR) and coordinated by the Leonardo company. The project is aimed to investigate configurations for regional aircraft and rotary wing platforms and architectures for propulsion systems, and is dedicated to the identification of the best strategy for their use, given different on-board energy sources. The reduced environmental impact is the key for the success of the new hybrid/electric aircraft configurations. This not only considers the chemical pollution introduced in the atmosphere, but also the noise produced on the surrounding area of airports. The present paper describes the acoustic impact assessment resulting from the inclusion of new propulsion technologies and new configurations of regional aircraft (ATR42 pax) in a reference airport area.
Highlights
Hybrid-Electric DEP AircraftThe Italian research project PROSIB (PROpulsione e Sistemi IBridi per velivoli ad ala fissa e rotante) [1], is a national project whose scope is the exploration of the impact of innovative propulsion technologies on regional aircraft and rotary wing platforms.The future of aircraft propulsion is leadning to electric configurations, using fully electric technology, and considering hybrid electric approaches
Thetenth acoustic free-field computed on The a sphere of 100 m of radius, from the through blade passage was frequencies (BPF)
ATR42 regional aircraft with a new wing of equal length and higher aspect ratio, two tip propellers powered by thermal engines, aiming at reducing the induced drag, and a DEP system comprised of four propellers per side, powered by electric motors
Summary
The Italian research project PROSIB (PROpulsione e Sistemi IBridi per velivoli ad ala fissa e rotante) [1], is a national project whose scope is the exploration of the impact of innovative propulsion technologies on regional aircraft and rotary wing platforms. Noise–power–distance (NPD) databases play a central role in conducting noise impact assessments for any type of aircraft. This is even more important when considering new configurations, such as those equipped with brand new hybrid/electric engines. Developed an Aviation Environmental Design Tool AEDT that uses NPD results as a source term in evaluating aircraft noise and emissions for airport environmental studies. The evaluation of the aerodynamic pressures on the full configuration via a mediumfidelity aerodynamic solver; The evaluation of aeroacoustic performances and hemispheric noise fields, using the Ffowcs Williams and Hawkings (FW–H) approach; Generation of noise–power–distance database through a ray-tracing approach; Acoustic impact at airport level evaluation with Aviation Environmental Design Tool (AEDT) procedure
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