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【英文标准名称】:StandardTestMethodforFreezingPointofAviationFuels(AutomaticPhaseTransitionMethod)
【原文标准名称】:测试航空燃料冻结点的标准试验方法(自动相变法)
【标准号】:ASTMD5972-2005(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:D02.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aviationturbinefuels;freezingpoint;Peltier;thermoelectric;waxcrystals;Automatedprocedures--petroleumproductsanalysis;Aviationfuels;Freezingpoint--petroleumproducts/applications;Peltierthermoelectricapparatus;Solidhydrocarboncryst
【摘要】:Thefreezingpointofanaviationfuelisthelowesttemperatureatwhichthefuelremainsfreeofsolidhydrocarboncrystals.Thesecrystalscanrestricttheflowoffuelthroughthefuelsystemoftheaircraft.Thetemperatureofthefuelintheaircrafttanknormallydecreasesduringflightdependingonaircraftspeed,altitude,andflightduration.Thefreezingpointofthefuelmustalwaysbelowerthantheminimumoperationalfueltemperature.Petroleumblendingoperationsrequireprecisemeasurementofthefreezingpoint.ThistestmethodproducesresultswhichhavebeenfoundtobeequivalenttoTestMethodD2386andexpressesresultstothenearest0.1x00B0;C,withimprovedprecisionoverTestMethodD2386.ThistestmethodalsoeliminatesmostoftheoperatortimeandjudgmentrequiredbyTestMethodD2386.WhenspecificationrequiresTestMethodD2386,donotsubstitutethistestmethodoranyothertestmethod.1.1Thistestmethodcoversthedeterminationofthetemperaturebelowwhichsolidhydrocarboncrystalsforminaviationturbinefuels.1.2Thistestmethodisdesignedtocoverthetemperaturerangeofx2212;80to20x00B0;C;however,2003JointASTM/IPInterlaboratoryCooperativeTestProgrammentionedin12.4hasonlydemonstratedthetestmethodwithfuelshavingfreezingpointsintherangeofx2212;42tox2212;60x00B0;C.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,see7.1,7.3,and7.5.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:5P.;A4
【正文语种】:英语

标准名称：	直经300mm多晶氟化镁整流罩技术条件
中标分类：	航空、航天 >> 航天器及其附件 >> 航天器控制导引系统
发布日期：
实施日期：	1991-09-01
首发日期：
作废日期：
出版日期：
页数：	10页

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