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一种斜切口进气道对压气机性能影响的实验研究-飞行器飞发匹配技术专栏

张煜寒1,马宁2,付磊2,刘若阳2,张明1,董旭1,李真宇1,孙大坤1,3,孙晓峰1   

  1. 1. 北京航空航天大学
    2. 中国航空发动机研究院
    3.
  • 收稿日期:2025-08-13 修回日期:2025-09-28 出版日期:2025-10-09 发布日期:2025-10-09
  • 通讯作者: 张明

Experimental Study on the Effect of a Drooped Intake on the Performance of Compressor

  • Received:2025-08-13 Revised:2025-09-28 Online:2025-10-09 Published:2025-10-09

摘要: 斜切口短舱进气道引发的稳态流动畸变随短舱缩短的设计趋势而加剧。为了探究斜切口短舱进气道是否会对压气机的特性和噪声产生影响,本文设计了一种斜切口进气道,进行了实验室压气机地面条件下的压气机实验。实验结果表明:针对本文的研究对象,斜切口进气道在远离风扇2.3倍管径距离时,几乎不影响风扇的压升及效率特性,也不会改变其失速起始模式。斜切口进气道出口声场的频谱特性和模态与标准进气道规律相似,而稳态流动畸变对转静干涉噪声存在干扰。模态结果表明,理论模型的预测不完全适用于本文的研究对象TA29试验台,同时斜切口进气道的不对称性,使前传至进气道的噪声模态在更多非主导模态上被激发或削弱。

关键词: 压气机/风扇, 进气道, 进发匹配, 风扇噪声, 声模态

Abstract: The steady flow distortion induced by the drooped intakes intensifies with the design trend of shortening the nacelle length. To investigate whether drooped intakes impact compressor performance and noise, this study designed a drooped intake and con-ducted compressor experiments under static intake conditions. Experimental results demonstrate that for the subject investigated, at a distance of 2.3 times the duct diameters upstream of the fan, the drooped intake exerts negligible influence on fan pressure rise and efficiency characteristics and does not alter its stall inception pattern. The spectral characteristics and mode composi-tion of the exhaust sound field from the drooped intake align with those of standard intakes, while steady flow distortion perturbs rotor-stator interaction noise. Mode analysis reveals that theoretical modes are not fully applicable to the TA29 test rig examined herein. Additionally, the asymmetry of the drooped intake enhances or suppresses upstream-propagating noise modes across multiple non-dominant mode orders.

Key words: Compressor/Fan, Intake, Fan noise, Intake/engine compatibility, Acoustic mode

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