ISO 7064-1983 数据处理校验字符系统

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下一篇: BS CECC 31300-1983 电子元器件用质量评估协调体系.分规范:固定式云母介电直流电容器

Product Code:SAE AIR5662
Title:Method for Predicting Lateral Attenuation of Airplane Noise
Issuing Committee:A-21 Aircraft Noise Measure Noise Aviation Emission Modeling
Scope:This document describes analytical methods for calculating the attenuation of the level of the sound propagating from an airplane to locations on the ground and to the side of the flight path of an airplane during ground roll, climbout after liftoff, and landing operations. Both level and non-level ground scenarios may be modeled using these methods, however application is only directly applicable to terrain without significant undulations, which may cause multiple reflections and/or multiple shielding effects. This attenuation is termed lateral attenuation and is in excess of the attenuation from wave divergence and atmospheric absorption.【英文标准名称】:Harmonizedsystemofqualityassessmentforelectroniccomponents-Blankdetailspecification-Electromechanicalall-or-nothingTELECOMrelaysofassessedquality
【原文标准名称】:电子元件质量评定协调体系.空白详细规范.机电"有"或"无"经质量评定的TECECOM继电器
【标准号】:BSEN116501-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-02-15
【实施或试行日期】:1996-02-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:L25
【国际标准分类号】:29_120_70
【页数】:28P;A4
【正文语种】:英语