@inproceedings{40ff9920188a4bbc8218294cc1d5e1ca,
title = "EXPERIMENTAL AND MODELLING CHARACTERIZATION OF THE BROADBAND NOISE OF A ROTOR IN HOVER",
abstract = "Multi-rotor configurations are often adopted in morden urban air mobility designs, with rotor noise being a major source of noise. Rotor broadband self-noise is a dominant source at hover conditions, requiring systematic measurements and modeling. In this work, noise generated by a pair of custom-designed blades with a radius of 0.5 m is studied in a newly renovated anechoic chamber under a variety of rotation rates to identify the broadband noise trends and characteristics. A physics-based broadband noise model is developed to predict the rotor broadband noise under hovering conditions, with the spanwise aerodynamic loads and velocity distributions given by the blade element momentum theory method. The rotor broadband noise under 10 kHz is found to be scaled by Mtip5 , where Mtip is the blade tip Mach number. The proposed prediction method can yield reasonable agreement with experiments.",
keywords = "Noise prediction, Rotor noise, Trailing-edge noise",
author = "Han Wu and Zhicheng Zhang and Zhenjun Peng and Wangqiao Chen and Peng Zhou and Xin Zhang and Siyang Zhong and Bao Chen and Guocheng Zhou",
note = "Publisher Copyright: {\textcopyright} 2024 Proceedings of the International Congress on Sound and Vibration. All rights reserved.; 30th International Congress on Sound and Vibration, ICSV 2024 ; Conference date: 08-07-2024 Through 11-07-2024",
year = "2024",
language = "English",
series = "Proceedings of the International Congress on Sound and Vibration",
publisher = "Romanian Society of Acoustics",
editor = "\{van Keulen\}, Wim and Jim Kok",
booktitle = "Proceedings of the 30th International Congress on Sound and Vibration, ICSV 2024",
address = "Romania",
}