SAE AIR5800 Tire Prerotation at Landing

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Product Code:SAE AIR5800
Title:Tire Prerotation at Landing
Issuing Committee:A-5c Aircraft Tires Committee
Scope:This SAE Aerospace Information Report (AIR) applies to landing gear tires and airframe structure for all types and models of civil and military aircraft having tires as part of the landing gear.This report describes the advantages and disadvantages of prerotating tires prior to landing, and explains why this practice is not generally adopted. Two potential benefits of this practice are considered: 1) Tire wear and 2) Spin-up loads on the landing gear and aircraft structure.
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【英文标准名称】:Cardiovascularimplants;cardiacvalveprostheses
【原文标准名称】:心血管植入物.心脏瓣膜修复术
【标准号】:ISO5840-1989
【标准状态】:作废
【国别】:国际
【发布日期】:1989-12
【实施或试行日期】:1989-12-01
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC150
【标准类型】:()
【标准水平】:()
【中文主题词】:医学科学;包装件;医疗设备;外科植入物;试验;定义;阀门;修复装置;心脏瓣膜;加标签;包装
【英文主题词】:testing;medicalsciences;prostheticdevices;packages;implants(surgical);surgicalimplants;valves;packing;labelling(process);tests;cardiacvalves;medicalequipment;labelling;definitions
【摘要】:
【中国标准分类号】:C45
【国际标准分类号】:0673
【页数】:9P;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforAlternateActinideCalibrationforInductivelyCoupledPlasma-MassSpectrometry
【原文标准名称】:感应耦合等离子体质谱法的交替锕系校正的标准规程
【标准号】:ASTMC1590-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:C26.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:锕系;感应;等离子体;校正;质谱学;耦合
【英文主题词】:actinides;inductivelycoupledplasma-massspectrometry(ICP-MS);massbias;thorium;uranium
【摘要】:Oneofthebenefitsofthisstandardpracticeistheabilitytocalibratefortheanalysisofhighlyradioactiveactinidesusingcalibrationstandardsatmuchlowerspecificactivities(thatis,232Thand238U).Environmentallaboratoriesmayfindthisstandardpracticeusefuliffacilitiesarenotavailabletohandlethehighlyradioactivestandardsoftheindividualactinidesofinterest.Thedegreeofactualmassbiasisvariableandisdependentuponinstrumenttuneparameters.Thisstandardpracticeusesuniversalinterferenceequationstoderiveamassbiascorrectionthatisspecifictotheinstrumentparametersandtuneusedforsampledataacquisitionandnotbasedonahistoricalaverage.Massbiascorrectionusestheinstrumentsoftwareinterferenceequationsanddoesnotrequireadditionalsubsequentoff-linecalculations.Themethodologythatthisstandardpracticeisbasedonhasbeenusedforthedeterminationof232Thand237Npinenricheduraniumsolutionsandthedeterminationof241Aminplutoniumanduraniumlegacyoxidesfollowingdissolutionandionextractionchromatographyseparation.1.1ThisstandardpracticeprovidesguidanceforanalternatelinearcalibrationforthedeterminationofselectedactinideisotopesinappropriatelypreparedaqueoussolutionsbyInductivelyCoupledPlasma-MassSpectrometry(ICP-MS).Thisalternatecalibrationismassbiasadjustedusingthorium-232(232Th)anduranium-238(238U)standards.Oneofthebenefitsofthisstandardpracticeistheabilitytocalibratefortheanalysisofhighlyradioactiveactinidesusingcalibrationstandardsatmuchlowerspecificactivities.Environmentallaboratoriesmayfindthisstandardpracticeusefuliffacilitiesarenotavailabletohandlethehighlyradioactivestandardsoftheindividualactinidesofinterest.1.2Theinstrumentresponseforaseriesofdeterminationsofknownconcentrationof232Thand238Udefinesthemassversusresponserelationship.Foreachstandardconcentration,theslopeofthelinedefinedby232Thand238Uisusedtoderivelinearcalibrationcurvesforeachmassofinterestusinginterferenceequations.Themassbiascorrectedcalibrationcurves,althoughgeneratedfrominterferenceequations,arespecifictotheinstrumentoperatingparametersandtuningineffectatthetimeofdataacquisition.BecauseinterferenceequationsarepartofthenormalICP-MSmanufacturer'ssoftwarepackage,thiscalibrationmethodologyiswidelyapplicable.1.3Forthisstandardpractice,theactinideatomicmassrangethathasbeenstudiedisfromamu232-244.Guidanceforanextendedrangeofamu228-248isgiveninthispractice.1.4Usingthispractice,analyteconcentrationsarereportedateachamuandnotbyelementtotal(thatis,239Puversusplutonium).1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A43
【国际标准分类号】:71_040_50
【页数】:6P.;A4
【正文语种】: