摘要： 起落架是民用飞机起降阶段的主要噪声源之一,是气动噪声控制领域的一项重要难题。经过近半个世纪的研究,起落架噪声特性及控制技术发展方面已经取得了相当丰富的成果。首先,简单回顾了起落架噪声的研究历程,介绍了噪声产生机理;然后,概述了国内外利用风洞试验、飞行试验、数值计算等多种手段在民用飞机起落架气动噪声及控制技术研究领域所取得的成果和最新进展,内容涉及整流罩、小孔封堵、部件优化、空气幕等多种方法;最后,给出了国外研究带来的启示,剖析了当前存在的问题,并对未来发展作出了展望。

关键词: 起落架噪声, 噪声控制技术, 整流罩, 空气幕, 大型声学风洞, 飞行试验

Abstract: The landing gear is a crucial source of the civil airplane noise at take-off and landing, and has been a serious issue for the research field of aerodynamic noise control. After almost half a century study, so far plenty of progress in the field of landing gear noise production reasons and control approaches have been achieved. This paper, to begin with, conducted a quick review of the landing gear noise research history, and made a brief explanation to the noise generation mechanism. Then, the state of art of the landing gear noise reduction technologies at home and abroad was introduced. The corresponding studies were based on different methods including wind tunnel test, flight test, and numerical simulation. The technologies involve faring, pin hole cover, component optimization and air curtain. At last, the research inspiration from home and abroad were discussed, followed by the analysis of current issues. As a consequence, the expectations to the future study on the landing gear noise were made.

Key words: landing gear noise, noise control technologies, fairing, air curtain, large-scale aeroacoustic wind tunnel, flight test

中图分类号: 

• V211.71