噪声与振动控制

›› 2012, Vol. 32 ›› Issue (2): 91-94.DOI: 103969/j.issn.1006-1355-2012.02.022

• 4.环境振动与环境声学 • 上一篇    下一篇

利用航空发动机静态远场噪声数据预测飞行噪声级

刘锦虎,闫国华,谢 福   

  1. （ 中国民航大学 航空工程学院， 天津 300300 ）
  • 收稿日期:2011-06-17 修回日期:2011-07-26 出版日期:2012-04-18 发布日期:2012-04-18
  • 通讯作者: 刘锦虎

Prediction of Flight Noise Level by Using Far Field Noise Data of the Eengine in Static Testing

LIU Jin-hu,YAN Guo-hua,XIE Fu   

  • Received:2011-06-17 Revised:2011-07-26 Online:2012-04-18 Published:2012-04-18
  • Contact: LIU Jin-hu

摘要： 装备改进型航空发动机的飞机投入运行前，需对该飞机进行噪声适航再审定。通过发动机静态测试数据预测飞机飞行噪声级，将减少再审定成本。通过“以机代台”试验方法，获得某型航空发动机静态远场噪声数据，将静态测试数据修正到飞行状态，从而预测装配该型航空发动机飞机的飞行噪声级，通过与实际飞行测量结果比较，验证利用静态测试数据预测飞行噪声级的可行性。

关键词: 声学, 再审定, 静态测试, 远场噪声, 飞行噪声级

Abstract: （ Aviation Engineering College of Civil Aviation University of China, Tianjin 300300， China ）
Abstract : Before an aircraft with the advanced engine putting into the market, its airworthiness noise recertification is necessary. Using the static test data of the engine to predict the flight noise level of the aircraft can reduce the cost of the recertification. In this article, the far field noise data of the testing engine was modified according to the flight condition and then used to predict the flight noise level of the aircraft. The feasibility of this method was verified by comparing the results with those in the real flight test.

Key words: acoustics, recertification, static test, far field noise, flight noise level

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