Abstract
This paper gives an overview of work investigating the noise produced by the propellers used on small multi-rotor unmanned aerial vehicles (UAVs) which has been recently undertaken at the University of Auckland. There are a number of different physical mechanisms by which these propellers generate noise and these have been studied using computational and analytical modelling and experimental measurements. Sources of noise which arc covered in this paper are: steady loading and thickness noise sources for isolated and shrouded propellers: unsteady blade motion: turbulent inflow for isolated and shrouded propellers: unsteady loading due to propeller-strut interaction: and the unsteady loading on the blades of a contrarotating propeller. The paper also describes some recent work undertaken to develop a standardised method for measuring noise from UAVs which includes assessing the suitability of ground-board mounted microphones for outdoor noise measurements and identifying appropriate metrics for quantifying UAV noise. The paper concludes with suggestions for future work.
| Original language | English |
|---|---|
| Title of host publication | Flinovia-Flow Induced Noise and Vibration Issues and Aspects-IV |
| Publisher | Springer Nature |
| Pages | 103-118 |
| Number of pages | 16 |
| ISBN (Electronic) | 9783031739354 |
| ISBN (Print) | 9783031739347 |
| DOIs | |
| Publication status | Published - 2025 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl. Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Keywords
- Propeller noise
- Turbulent inflow noise
- Unmanned aerial vehicles