YS/T 125-1992 重有色冶金炉窑等级
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来源:标准资料网
基本信息
| 标准名称： | 重有色冶金炉窑等级 |
| 英文名称： | Standards for classifying metallurgical furnaces for heavy non-ferrous metals |
| 中标分类： |
冶金 >>
冶金综合 >>
基础标准与通用方法 |
| ICS分类： |
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| 发布日期： | 1992-09-17 |
| 实施日期： | 1991-06-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 27页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 冶金 冶金综合 基础标准与通用方法
Product Code:SAE AIR1906
Title:Estimation of One-Third Octave Band Lateral Attenuation of Sound From Jet-Propelled Airplanes
Issuing Committee:A-21 Aircraft Noise Measure Noise Aviation Emission Modeling
Scope: Data presented in this AIR are in terms of differences between one-third-octave-band free-field sound pressure levels and are intended for use in estimating far-field aircraft noise. Allowance may be made for the acoustic impedance of the ground surface and sound pressure levels at any height above the ground plane may be estimated. In estimating the long-term time averaged sound level at several locations around an airport served by a mix of airplane types under a variety of atmospheric conditions, airplane operational weights, and flight procedures, it would be more appropriate to use the method of prediction for lateral attenuation given in reference 1.
