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Experimental analysis on the noise of propellers for small UAV

机译:小型无人机螺旋桨噪声的实验分析

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摘要

Main goal of this paper is an experimental analysis on the aeroacoustic features of propellers aimed at the propulsion of small unmanned aerial vehicles. The investigation concerns the comparison between the acoustic signature of optimized and conventional propellers driven by brushless electric motors. This topic is particularly relevant due to the dramatic increase of the UAV market for civil and military purposes with multiple operational issues. The quietness and the efficiency of the propulsive system are key aspects in the design of advanced aerial vehicles and very often can lead to the success or failure of the mission. In addition to the experimental research, a numerical analysis based on the compact formulation of the Ffowcs-Williams/Hawking equation and a simple model for the broadband noise, is presented and discussed.
机译:本文的主要目的是对旨在推进小型无人机飞行的螺旋桨空气声学特性进行实验分析。该研究涉及由无刷电动机驱动的优化螺旋桨和常规螺旋桨的声学特征之间的比较。由于用于民用和军用目的的无人飞行器市场的急剧增长,涉及多个操作问题,因此该主题特别重要。推进系统的安静性和效率是高级飞行器设计中的关键方面,并且通常会导致任务成败。除了实验研究之外,还提出并讨论了基于Ffowcs-Williams / Hawking方程的紧缩公式和宽带噪声简单模型的数值分析。

著录项

  • 来源
    《Applied Acoustics》 |2013年第1期|79-88|共10页
  • 作者

    Giorgia Sinibaldi; Luca Marino;

  • 作者单位

    Department of Mechanical and Aerospace Engineering, University of Rome 'La Sapienza', Via Eudossiana 18,1-00184 Roma, Italy;

    Department of Mechanical and Aerospace Engineering, University of Rome 'La Sapienza', Via Eudossiana 18,1-00184 Roma, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    propeller noise; UAV; tonal noise; broadband noise;

    机译:螺旋桨噪音;无人机音调噪音宽带噪声;

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