MIL-STD-859A (NOTICE 2)
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来源:标准资料网
MIL-STD-859A (NOTICE 2), MILITARY STANDARD: STANDARD CALIBRATION TABLE FOR AERONAUTICAL PRESSURE MEASURING EQUIPMENT (20 SEPT 1995)., MIL-STD-859A, dated 13 November 1968, and NOTICE 1, dated 1 February 1979, are hereby canceled without replacement.
【英文标准名称】:StandardTestMethodforMeasuringOpticalAngularDeviationofTransparentParts
【原文标准名称】:透明部件光学角度偏差的标准测量方法
【标准号】:ASTMF801-1996(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【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】:F07.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aimingaccuracy;aimingerror;angulardeviation;deviation;refraction;Aerospacetransparentenclosures;Angulardeviation;Canopies(aerospaceapplications);Collimator/collimation;Deviation;Lateraldisplacement;Lineardisplacement;Opticalmater
【摘要】:Oneofthemeasuresofopticalqualityofatransparentpartisitsangulardeviation.Excessiveangulardeviation,orvariationsinangulardeviationthroughoutthepart,resultinvisibledistortionofscenesviewedthroughthepart.Angulardeviation,itsdetection,andquantificationareofextremeimportanceintheareaofcertainaircrafttransparencyapplications,thatis,aircraftequippedwithHeads-upDisplays(HUD).HUDsmayrequirestringentcontrolovertheopticsoftheportionofthetransparency(windscreenorcanopy)whichliesbetweentheHUDcombiningglassandtheexternalenvironment.MilitaryaircraftequippedwithHUDsorsimilardevicesrequirepreciseknowledgeoftheeffectsofthewindscreenorcanopyonimagepositioninordertomaintainweaponsaimingaccuracy.Twoopticalparametershavetheeffectofchangingimageposition.Thefirst,lateraldisplacement,isinherentinanytransparencywhichistiltedwithrespecttothelineofsight.Theeffectoflateraldisplacementisconstantoverdistance,andseldomexceedsafractionofaninch.Thesecondparameter,angulardeviation,isusuallycausedbyawedginessornonparallelismofthetransparencysurfaces.Theeffectofangulardeviationisrelatedtothetangentoftheangleofdeviation,thusthemagnitudeoftheimagepositiondisplacementincreasesasdoesthedistancebetweenimageandtransparency.Thequantificationofangulardeviationisthenthemorecriticalofthetwoparameters.1.1Thistestmethodcoversmeasuringtheangulardeviationofalightrayimposedbytransparentpartssuchasaircraftwindscreensandcanopies.Theresultsareuncontaminatedbytheeffectsoflateraldisplacement,andtheproceduremaybeperformedinarelativelyshortopticalpathlength.Thisisnotintendedasarefereestandard.Itisoneconvenientmethodformeasuringangulardeviationsthroughtransparentwindows.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A60
【国际标准分类号】:49_035
【页数】:9P.;A4
【正文语种】:英语
【英文标准名称】:Specificationforchinatableware
【原文标准名称】:瓷餐具规范
【标准号】:BS5416-1990
【标准状态】:现行
【国别】:英国
【发布日期】:1990-04-30
【实施或试行日期】:1990-04-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:抽样方法;光学测量;试验条件;作标记;性能;试样制备;吸水试验;吸水率;透明度;餐具;工业瓷器;家用设备;陶瓷制品;日用瓷器;给养设备
【英文主题词】:Cateringequipment;Chinaware;Householdequipment;Marking;Opticalmeasurement;Performance;Porcelain;Pottery;Samplingmethods;Specimenpreparation;Tableware;Testingconditions;Transparency;Waterabsorption;Water-absorptiontests
【摘要】:Propertiesoftablewarewhichdetermineitscorrectdescriptionaschinaorporcelainviz.translucency&resistancetowaterabsorption.
【中国标准分类号】:Y24
【国际标准分类号】:81_060_01;97_040_60
【页数】:8P;A4
【正文语种】:英语
