实验流体力学2026，Vol.40Issue(1)：79-87,9.DOI:10.11729/syltlx20250081
飞机典型运行状态声源识别及其声功率估计
Identification of sound sources and estimation of their radiated sound power of aircraft in typical operating status
宋亚辉1
作者信息
- 1. 中国飞行试验研究院 飞机飞行试验技术研究所,西安 710089
- 折叠
摘要
Abstract
Identifying the main sound sources under typical aircraft operating status and estimating their radiated sound power are of great significance for aircraft low-noise design and noise pollution assessment.In this study,a beamforming algorithm is employed to develop a method that utilizes a sound array to identify the external main airframe sound sources and estimate their radiated sound power levels during both aircraft ground operation and low-altitude flight.Additionally,a method for analyzing the contribution of these main sound sources is proposed.A flight test technical plan is then presented,which centers around the measurement of sound-aircraft-environment parameters.The proposed methods are validated through a series of sound tests conducted on a fighter plane and a large transport aircraft,utilizing a well-designed non-uniform linear acoustic array and a planar multi-arm spiral acoustic array.The results demonstrate the efficacy of the proposed methods in accurately identifying the main sound sources within the frequency range of 200-2 000 Hz,as well as estimating the radiated sound power levels of the aircraft engine and airframe sound sources,thereby enabling the determination of their respective contributions to the overall sound power.关键词
飞机噪声/声源识别/声功率估计/声贡献量/飞行试验Key words
aircraft sound/sound source identification/sound power estimation/sound contribution/flight test分类
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宋亚辉..飞机典型运行状态声源识别及其声功率估计[J].实验流体力学,2026,40(1):79-87,9.
