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.【英文标准名称】:Transmittersforuseinindustrial-processcontrolsystems-Part1:Methodsforperformanceevaluation(IEC60770-1:1999);GermanversionEN60770-1:1999
【原文标准名称】:工业过程控制系统用发射机.第1部分:性能评估方法
【标准号】:DINEN60770-1-1999
【标准状态】:作废
【国别】:德国
【发布日期】:1999-11
【实施或试行日期】:1999-11-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;工业;过程控制;电控制设备;控制设备;磨损量;变流器;定义;工作性能;电气工程;性能试验;工业流程测量;控制系统;过程测量和控制技术;检验;发射机;气动控制系统;控制工程;控制工艺学;控制;传感器
【英文主题词】:Control;Controlengineering;Controlequipment;Controlsystems;Controltechnology;Converters;Definition;Definitions;Electriccontrolequipment;Electricalengineering;Industrial;Industrialprocessmeasurement;Industries;Inspection;Instructions;Performanceinservice;Performancetesting;Pneumaticcontrolsystems;Processcontrol;Processmeasuringandcontroltechnology;Testing;Transducers;Transmitters;Wear-quantity
【摘要】:Thedocumentisapplicabletotransmitterswhichhaveeitherastandardelectriccurrentoutputsignalorastandardpneumaticoutputsignal.Itisintendedtospecifyuniformmethodsoftestsfortheevaluationoftheperformanceoftransmitterswithpneumaticorelectricoutputsignals.
【中国标准分类号】:N19
【国际标准分类号】:25_040_40
【页数】:18P.;A4
【正文语种】:德语