SAE ARP4990 Turbine Flowmeter Fuel Flow Calculations

作者:标准资料网 时间:2024-05-03 02:50:49   浏览:8995   来源:标准资料网
下载地址: 点击此处下载
Product Code:SAE ARP4990
Title:Turbine Flowmeter Fuel Flow Calculations
Issuing Committee:Eg-1e Test Cells Committee
Scope: This SAE Aerospace Recommended Practice (ARP) provides to the aerospace industry a procedure for the consistent and accurate calculation of fuel flow using turbine flowmeters during development, production, and post overhaul/repair gas turbine engine testing.
下载地址: 点击此处下载
基本信息
标准名称:路由器安全技术要求
英文名称:Security requirements for router
中标分类: 电子元器件与信息技术 >> 信息处理技术 >> 数据加密
ICS分类: 信息技术、办公机械设备 >> 信息技术(IT)综合
替代情况:被GB/T 18018-2007替代
发布部门:国家质量技术监督局
发布日期:1999-01-01
实施日期:2000-05-01
首发日期:1999-11-11
作废日期:2007-12-01
主管部门:国家标准化管理委员会
归口单位:全国信息技术标准化技术委员会
起草单位:电子部第研究所
出版社:中国标准出版社
出版日期:2004-08-21
页数:平装16开, 页数:18, 字数:30千字
书号:155066.1-16687
适用范围

本标准规定了采用传输控制协议/网间协议(TCP/IP)协议路由器的安全功能技术要求。本标准适用于路由器安全功能的设计、研制、评估和路由器产品的选购。

前言

没有内容

目录

没有内容

引用标准

没有内容

所属分类: 电子元器件与信息技术 信息处理技术 数据加密 信息技术 办公机械设备 信息技术(IT)综合
【英文标准名称】:StandardTestMethodforReflectanceFactorandColorbySpectrophotometryUsingHemisphericalGeometry
【原文标准名称】:用半球体几何形状的分光光度法测量反射系数和颜色的标准试验方法
【标准号】:ASTME1331-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E12.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:color;hemisphericalgeometry;reflectance;reflectancefactor;spectrophotometry;Color--opaquematerials;Colorimetricanalysis;Geometricanalysis--paints/relatedcoatings/materials;Hemisphericalgeometry;Instrumentalmeasurement--color/light;Reflec
【摘要】:Themostdirectandaccessiblemethodsforobtainingthecolorcoordinatesofobjectcolorsarebyinstrumentalmeasurementusingspectrophotometersorcolorimeterswitheitherhemisphericalorbidirectionalopticalmeasuringsystems.Thistestmethodprovidesproceduresforsuchmeasurementbyreflectancespectrophotometryusingahemisphericalopticalmeasuringsystem.Thistestmethodisespeciallysuitableformeasurementofthefollowingtypesofspecimensfortheindicateduses(GuideE179andPracticeE805):Alltypesofobject-colorspecimenstoobtaindataforuseincomputercolorantformulation.Object-colorspecimensforcolorassessment.Forthemeasurementofplane-surfacehigh-glossspecimens,thespecularcomponentshouldgenerallybeexcludedduringthemeasurement.Forthemeasurementofplane-surfaceintermediate-glossspecimensandoftextured-surfacespecimens,includingtextiles,wherethefirst-surfacereflectioncomponentmaybedistributedoverawiderangeofangles,measurementmaybemadewiththespecularcomponentincluded,buttheresultingcolorcoordinatesmaynotcorrelatebestwithvisualjudgmentsofthecolor.Theuseofbidirectionalgeometry,suchas45/0or0/45,mayleadtobettercorrelations.Forthemeasurementofplane-surface,low-gloss(matte)specimens,thespecularcomponentmayeitherbeexcludedorincluded,asnosignificantdifferenceintheresultsshouldbeapparent.Specimenswithbaremetalsurfacesforcolorassessment.Forthisapplication,thespecularcomponentshouldgenerallybeincludedduringthemeasurement.Thistestmethodisnotrecommendedformeasurementofthefollowingtypesofspecimens,forwhichtheuseofbidirectionalmeasurementgeometry(0/45or45/0)ispreferable(GuideE179):Object-colorspecimensofintermediategloss,Retroreflectivespecimens,andFluorescentspecimens(PracticeE991).Whenthereisdoubtastowhetherthespecularcomponentofreflectionshouldbeincludedorexcluded,bothmeasurementsshouldbemade,andtheresultscorrelatedwithvisualjudgments.Thereafter,themethodwithhighervisualcorrelationshouldbeutilized.Whenmeasurementsoftwospecimenswhosegloss,ortexture,aresubstantiallydifferentfromeachother,aretobeutilizedinacolor-differencecomparison,generallythespecularcomponentshouldbeincludedineachmeasurement.Thishastheeffectofincludinginbothmeasurementsallthefirstsurfacereflectionswhetherdiffuseorspecular.Thesefirstsurfacereflectionsaresubtractedfromeachotherinthecolor-differenceequation,anddifferencesinthebodycolorremain,whichiswhatisusuallysought.1.1Thistestmethoddescribestheinstrumentalmeasurementofthereflectionpropertiesandcolorofobject-colorspecimensbytheuseofaspectrophotometerorspectrocolorimeterwithahemisphericalopticalmeasuringsystem,suchasanintegratingsphere.1.2Thetestmethodissuitableforusewithmostobject-colorspecimens.However,itshouldnotbeusedforretroreflectivespecimensorforfluorescentspecimenswhenhighestaccuracyisdesired.Specimenshavingintermediate-glosssurfacesshouldpreferablynotbemeasuredbyuseofthisgeometry.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesn......
【中国标准分类号】:A26
【国际标准分类号】:17_180_20
【页数】:4P.;A4
【正文语种】:英语