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第 38 卷 第 3 期 Vol. 38, No. 3
2019 年 5 月 Journal of Applied Acoustics May, 2019

⋄ 研究报告 ⋄

民机适航审定噪声的纯音修正方法

宋亚辉 † 张晓亮

(中国飞行试验研究院 飞机所 西安 710089)

摘要 大型运输类民机适航合格审定噪声水平采用有效感觉噪声级来评定，引入纯音修正因子来考虑噪声频
谱不规则性对人主观感觉的影响，而纯音修正因子的计算受试验环境、测试系统特性、数据计算精度、纯音频
带分割、数据调整方法和虚假纯音等影响，应在计算中给予考虑。根据适航规章要求，对适航审定噪声的纯音
修正方法进行了研究。通过分析纯音修正因子计算的影响因素，基于 “CCAR-36” 基本方法提出了调整后的计
算方法和步骤，并对某型民机适航审定试验的噪声进行了纯音修正分析。结果表明，合理地考虑各影响因素对
实现纯音修正因子准确计算具有重要意义，该方法能可靠地应用于纯音修正因子计算，提高了纯音修正因子
和有效感觉噪声级计算的准确度，可为国产大型民机噪声适航审定提供有益参考。
关键词 民机噪声，纯音修正，适航合格审定，有效感觉噪声级
中图法分类号: V216.5+4, TB52+5 文献标识码: A 文章编号: 1000-310X(2019)03-0326-07
DOI: 10.11684/j.issn.1000-310X.2019.03.006

An investigation of tone correction method of noise level in civil airplane

airworthiness certification

SONG Yahui ZHANG Xiaoliang

(Aircraft Flight Test Technology Institute, Chinese Flight Test Establishment, Xi’an 710089, China)

Abstract The basic element for civil airplane noise airworthiness certification criteria is the effective perceived
noise level (EPNL) which consists of instantaneous perceived noise level, tone correction factor, and duration
correction factor. Tone correction factor is made to account for the human subjective response to the presence
of spectral irregularities. But the impacts that affect tone correction factor calculation method should be
considered, including test environment, test system characteristics, accuracy of data calculation, band sharing
adjustment of tone, data adjustment method, false tone and so on. Considering the influence factors and the
provisions of airworthiness regulation, tone correction method of transport category large airplanes’ noise level
is investigated. And a modified method which includes integrated practical procedures is presented. Then the
method is applied to calculate and analyze the tone correction factors of a certain civil airplane’s airworthiness
certification noise tests. The results show that the influence factors have significant impact on tone correction
factors. This method can be used to obtain tone correction factor precisely and conveniently and it can provide
a guidance to domestic civil airplane noise airworthiness certification.
Key words Civil airplane noise, Tone correction, Airworthiness certification, Effective perceived noise level

2018-08-11 收稿; 2018-12-28 定稿
作者简介: 宋亚辉 (1985- ), 男, 河南鹿邑人, 硕士, 工程师, 研究方向: 飞行器结构动力学, 航空声学。
† 通讯作者 E-mail: songyahuilym@163.com