板和翼对旋翼噪声的屏蔽

IF 1 3区 物理与天体物理 Q4 ACOUSTICS Acta Acustica Pub Date : 2022-02-28 DOI:10.1051/aacus/2022022
M. Carley
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引用次数: 0

摘要

为下一代飞机提出的一种降噪方法是通过将噪声源置于机翼或其他表面来屏蔽推进系统的噪声。本文对半无限平板边缘附近远离圆形声源的声场、机翼遮挡噪声和后缘散射的模型问题进行了近似分析。该近似是针对小半径源而开发的,与对该场的完整数值评估相比,发现它是准确的。
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Shielding of rotor noise by plates and wings
A method of noise reduction proposed for the next generation of aircraft is to shield noise from the propulsion system, by positioning the noise source over a wing or another surface. In this paper, an approximate analysis is developed for the acoustic field far from a circular source placed near the edge of a semi-infinite plate, a model problem for shielding of noise by a wing and for scattering by a trailing edge. The approximation is developed for a source of small radius and is found to be accurate when compared to full numerical evaluation of the field.
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来源期刊
Acta Acustica
Acta Acustica ACOUSTICS-
CiteScore
2.80
自引率
21.40%
发文量
0
审稿时长
12 weeks
期刊介绍: Acta Acustica, the Journal of the European Acoustics Association (EAA). After the publication of its Journal Acta Acustica from 1993 to 1995, the EAA published Acta Acustica united with Acustica from 1996 to 2019. From 2020, the EAA decided to publish a journal in full Open Access. See Article Processing charges. Acta Acustica reports on original scientific research in acoustics and on engineering applications. The journal considers review papers, scientific papers, technical and applied papers, short communications, letters to the editor. From time to time, special issues and review articles are also published. For book reviews or doctoral thesis abstracts, please contact the Editor in Chief.
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