Product Code:SAE AIR1845
Title:Procedure for the Calculation of Airplane Noise in the Vicinity of Airports
Issuing Committee:A-21 Aircraft Noise Measure Noise Aviation Emission Modeling
Scope: This Aerospace Information Report (AIR) describes procedures for calculating sound exposure levels at ground locations resulting from operations of jet and propeller driven airplanes in the vicinity of an airport. The procedures assume that reference noise and performance data are available for each airplane involved. The fundamental element of the procedures is a method for calculating the A-weighted sound exposure level (SEL) that would be produced, on average, by any specific airplane when performing any specified operation. Procedures are given for calculating sound exposure levels for individual airplane operations and for the average sound level produced by the cumulative effect of a series of different airplane operations, normally expressed in terms of day-night average sound level (DNL) averaged over an appropriate long time period. The principal purpose of using the procedures recommended in this AIR to calculate contours of equal average sound levels is to assist in land-use planning around airports. Contours of equal sound level may be constructed by connecting lines through individual points of constant sound level. While the procedures of this AIR describes the computation of sound levels at any point in the vicinity of an airport, the procedure for calculation of contours is computer-program dependent and is not a part of this AIR.【英文标准名称】:Ceramictiles-Part9:Determinationofresistancetothermalshock
【原文标准名称】:陶瓷砖.第4部分:抗热冲击的测定
【标准号】:ISO10545-9-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-11
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC189
【标准类型】:()
【标准水平】:()
【中文主题词】:测定;耐力;建筑;试验;陶瓷;耐热冲击能力;温度变化;板;伸长系数;面砖;材料试验;温度稳定性;瓷砖;膨胀试验;膨胀
【英文主题词】:expansions;materialstesting;changesoftemperature;construction;coefficientofextension;ceramictiles;ceramics;plates;expansiontests;temperaturestability;thermalshockendurance;testing;tiles;determination;resistance
【摘要】:ThispartofISO10545specifiesatestmethodfordeterminingtheresistancetothermalshockofallceramictilesundernormalconditionsofuse.Dependingonthewaterabsorptionofthetiles,differentprocedures(testswithorwithoutimmersion)areusedunlessthereisanagreementtothecontrary.NOTEISO13006providespropertyrequirementsfortilesandotherusefulinformationontheseproducts.
【中国标准分类号】:Q31
【国际标准分类号】:91_100_23
【页数】:3P;A4
【正文语种】:英语