刘沛清,李玲.大型飞机增升装置气动噪声研究进展[J].民用飞机设计与研究,2019,(1):1-
大型飞机增升装置气动噪声研究进展
  
DOI:10.19416/j.cnki.1674-9804.2019.01.001
中文关键词:增升装置  气动噪声  流动控制  降噪方法
英文关键词:high-lift device  aeroacoustic  flow control  noise reduction method
基金项目:
作者单位
刘沛清,李玲 北京航空航天大学陆士嘉实验室北京 100191 
中文摘要:对于现代大型商用飞机而言,在飞机进场和降落阶段,由于飞机发动机处于低功率状态而起落架和增升装置全部打开,此时的机体噪声十分明显,在飞机总的噪声中所占的比重不容忽视。近几十年的大量研究,已经对增升装置的气动噪声特性和机理有相当程度的认识,并在流动控制和降噪技术方面取得丰硕成果。本文主要介绍国内外在大型飞机增升装置气动噪声领域所取得的研究成果和最新进展。增升装置的噪声主要是由前缘缝翼凹槽产生的低频离散噪声、襟翼侧缘的中频宽带噪声和前缘缝翼尾缘涡脱落的高频离散噪声三部分组成。目前,降噪技术主要分成被动流动控制降噪技术和主动流动控制降噪技术两类,被动降噪技术有前缘凹槽遮挡、前缘凹槽填充、前缘下垂等;主动流动控制手段有吹吸气、等离子体激励器等。
英文摘要:For the modern large commercial aircrafts, during the phases of approach and landing, when the engines are at low operate with the high-lift devices and landing gears all deployed, the airframe noise, the majority of the aircraft total noise, is notable. Over the last decades, a considerable amount of work has been conducted on the noise characteristics, noise mechanism, noise reduction techniques for the high-lift device noise. The high-lift device noise is generally categorized into three parts, low-frequency tones generated from the slat cove, mid-frequency broadband noise generated from flap side edge, and high-frequency tones generated from the slat trailing edge. The noise reduction techniques have active and passive flow control and noise reduction methods, such as slat cove cover, slat cove filler, droop nose and blowing-suction air, plasma actuation, etc.
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