Experimental Analysis of Synchrophasing Impact on Noise of Distributed Propeller Systems in Tractor Configuration

Conference paper (2024)

Authors

F. do Nascimento Monteiro Wind Energy - Aerospace Engineering
R.R. Duivenvoorden Flight Performance and Propulsion - Aerospace Engineering
D. Ragni Wind Energy - Aerospace Engineering
T. Sinnige Flight Performance and Propulsion - Aerospace Engineering
F. Avallone Polytechnic University of Turin, Wind Energy - Aerospace Engineering
Research Group
Wind Energy (Aerospace Engineering) (TU Delft)
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Published Date

2024

Language

English

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Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Wind Energy

Abstract

This study investigates the acoustic characteristics of a distributed propeller-wing system in a tractor configuration, focusing on the potential for noise reduction using the synchrophasing technique. The experimental setup features three propellers with nacelles mounted side-by-side on the leading edge of a wing, resulting in aerodynamic interference between adjacent propellers due to a tip clearance of 5% of the radius. The study investigates the acoustic impact of varying relative blade-phase angles (synchrophasing) and further explores the implications of changing the angle of attack. The findings show that synchrophasing influences noise emissions at the locations investigated, potentially amplifying or reducing noise relative to a random configuration. Moreover, these effects persist when investigating higher angles of attack.

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