Aeroacoustics of In-Flight Propeller-Wing in Pusher Configuration

Akiwate, Deepak C.; Paruchuri, Chaitanya C.; Joseph, Phillip; Parry, A. B.; Angland, David; Jung, Riul

Abstract

In this study, we investigate the noise produced by a propeller installed in a pusher configuration in close proximity to a wing. Experiments are conducted in a state-of-the-art anechoic wind tunnel to observe the impact of both static and in-flight conditions on overall noise generation. We found that as the separation distance increases, the interaction between the propeller and wing diminishes, causing the overall noise to approach levels similar to those of the rotor alone. A comprehensive comparison of predictions and measured results across various separation distances aids in understanding dominant noise mechanisms over a range of propeller and wing separations. At low separation distances, the potential field is the dominant mechanism of noise generation, while at higher separations, wake interaction is found to be the dominant source. This, in turn, facilitates understanding of noise generation from installed propellers and enables the design of low-noise configurations and the establishment of noise control strategies for installed propellers.

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 30th AIAA/CEAS Aeroacoustics Conference (2024)
• Start Date: Jun 4, 2024
• End Date: Jun 7, 2024
• Acceptance Date: May 1, 2024
• Online Publication Date: May 30, 2024
• Publication Date: Jun 4, 2024
• Deposit Date: Jun 17, 2024
• Publicly Available Date: Jun 21, 2024
• Publisher: American Institute of Aeronautics and Astronautics
• ISBN: 978-1-62410-720-7
• DOI: https://doi.org/10.2514/6.2024-3261