Rapid Optimisation of Propellers with Tonal and Broadband Aeroacoustic Constraints

Shaun F Pullin*, Aurelien Ghiglino, Beckett Zhou, Mahdi Azarpeyvand

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

The increased demand for sustainable aviation and the growing interest in Urban Air Mobility concepts has led to renewed interest in propeller aerodynamics and aeroacoustics. It is necessary to be able to predict the noise produced by propellers at the earliest stages of the design process. In this work, which builds on previous optimisation studies, a computationally efficient, BEMT based propeller simulation framework capable of predicting and optimising the aerodynamic and aeroacoustic performance is presented. The noise prediction provided by this tool includes both tonal and broadband components produced by the propeller. Aerofoil aerodynamics are obtained using a data-driven method, allowing for optimisation of the sectional shape alongside parameters such as chord and pitch distributions. Previous studies using this tool have found that including the aerofoil shape in the optimisation process allowed for an additional efficiency increases at high tonal constraints. This work introduces a trailing edge broadband noise model into the optimisation framework and studies the effect this has on the optimal geometry of a propeller. Optimisation of a small benchmark propeller has found significant reductions in mean broadband SPL of up to 5.18 dB while maintaining a high fraction of the baseline thrust.
Original languageEnglish
Title of host publicationAIAA AVIATION 2023 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
ISBN (Electronic)9781624107047
DOIs
Publication statusPublished - 8 Jun 2023
Event2023 AIAA Aviation Forum - San Diego, Califormia, United States
Duration: 12 Jun 202316 Jun 2023

Conference

Conference2023 AIAA Aviation Forum
Country/TerritoryUnited States
Period12/06/2316/06/23

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