Comparative Study on Aerodynamic Noise Characteristics of Unmanned Aerial Vehicle Series Rotors

被引：0
|
作者：
Yan Q. [1 ]
Wang D. [1 ]
Gao P. [1 ]
Wei W. [1 ,2 ]
机构：
[1] National Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Beijing
[2] Chongqing Innovation Center, Beijing Institute of Technology, Chongqing
来源：
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | 2024年 / 44卷 / 05期
关键词：
aerodynamic noise; large eddy simulation; rotor; sound pressure level;
D O I：
10.15918/j.tbit1001-0645.2023.126
中图分类号：
学科分类号：
摘要：
The aerodynamic noise generated by rotors is a major source of noise in various rotor-based unmanned aircraft systems. In order to reduce the overall noise and enhance the acoustic stealth performance of unmanned aircraft, a comparative study of aerodynamic noise characteristics was presented for a series of equi-diameter rotors of a specific unmanned aircraft in this paper. Numerical models were established for Large Eddy Simulation to predict the aerodynamic noise characteristics of each rotor, taking the obtained surface pressure fluctuations as the acoustic input to solve the FW-H equation. The far-field noise characteristics of equi-diameter (3R) rotors were calculated and experimentally validated at different orientations. Compared to experimental results, the simulation results of sound pressure level show that the error is less 4.3% between two methods at the equi-diameter locations for five rotor models. The aerodynamic noise exhibits pronounced dipole characteristics, and the radial sound pressure level is significantly higher than the axial value. The aerodynamic noise level of different rotors is positively correlated with rotor torque, while the relationship with rotor lift is less significant. © 2024 Beijing Institute of Technology. All rights reserved.
引用
收藏
页码：468 / 475
页数：7
相关论文
共 18 条
  • [1] BRENTNER K S, FARASSAT F., Analytical comparison of the acoustic analogy and kirchhoff formulation for moving surfaces, AIAA Journal, 36, 8, pp. 1379-1386, (1998)
  • [2] XU Guohua, SHI Yongjie, ZHAO Qijun, Et al., New research progress in helicopter rotor aerodynamic noise, Acta Aeronautica et Astronautica Sinica, 38, 7, pp. 23-38, (2017)
  • [3] ALLONGUE M, MARZE H J, POTDEVIN F., The quiet helicopter: From research to reality, Proceedings of 55th Annual Forum of the American Helicopter Society, 55, pp. 37-53, (1999)
  • [4] GUR O, ROSEN A., Comparison between blade-element models of propellers, Aeronautical Journal, 112, 1138, pp. 689-704, (2008)
  • [5] CHRISTIAN A W, BOYD D D, ZAWODNY N S, Et al., Auralization of tonal rotor noise components of a quadcopter flyover, Proceedings of Inter Noise, pp. 3983-3994, (2015)
  • [6] WANG Liangquan, SHI Yongjie, XU Guohua, Blade vortex interaction acoustic prediction method for rotor based on aerodynamic/elastic copling, Journal of Aerospace Power, 32, 9, pp. 2160-2169, (2017)
  • [7] ROMANI G, GRANDE E, AVALLONE F, Et al., Computational study of flow incidence effects on the aeroacoustics of low blade-tip mach number propellers, Aerospace Science and Technology, 120, (2021)
  • [8] YANG Y, LIU Y, LI Y, Et al., Aerodynamic and aeroacoustic performance of an isolated multicopter rotor during forward flight, AIAA Journal, 58, 3, pp. 1171-1181, (2020)
  • [9] HUANG Z, YAO H, SJOGREN O, Et al., Aeroacoustic analysis of aerodynamically optimized joined-blade propeller for future electric aircraft at cruise and take-off, Aerospace Science and Technology, 107, pp. 1-12, (2020)
  • [10] ZHAO Jun, LI Zhibin, Computational research on aerodynamic and noise characteristics of variable pitch quadrotor aircraft, Aeronautical Science & Technology, 33, 4, pp. 57-66, (2022)
12