您的位置: 标准下载 » 协会标准 » SAE 美国机动车工程师学会 »

SAE AIR4083 Helicopter Power Assurance

作者:标准资料网 时间:2024-05-20 06:17:30  浏览:9862   来源:标准资料网
下载地址: 点击此处下载
Product Code:SAE AIR4083
Title:Helicopter Power Assurance
Issuing Committee:S-12 Helicopter Powerplant Committee
Scope:This SAE Aerospace Information Report (AIR) defines helicopter turboshaft engine power assurance theory and methods. Several inflight power assurance example procedures are presented. These procedures vary from a very simple method used on some normal category civil helicopters, to the more complex methods involving trend monitoring and rolling average techniques. The latter method can be used by small operators but is generally better suited to the larger operator with computerized maintenance record capability.
下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodforMeasuringResistivityProfilesPerpendiculartotheSurfaceofaSiliconWaferUsingaSpreadingResistanceProbe
【原文标准名称】:用分布电阻探头测量硅晶片垂直于表面的纵断面电阻率的标准试验方法
【标准号】:ASTMF672-2001
【标准状态】:作废
【国别】:
【发布日期】:2001
【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】:F01.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:垫圈;外形;试验;硅
【英文主题词】:carrierdensityprofile;profile;resistivityprofile;spreadingresistance;spreadingresistanceprobe;spreadingresistanceprofile;SRP
【摘要】:ThisstandardwastransferredtoSEMI(www.semi.org)May20031.1Thistestmethodcoversmeasurementoftheresistivityprofileperpendiculartothesurfaceofasiliconwaferofknownorientationandtype.Note1--Thistestmethodmayal
【中国标准分类号】:H82
【国际标准分类号】:29_045
【页数】:18P.;A4
【正文语种】:


【英文标准名称】:StandardGuideforFireHazardAssessmentofRailTransportationVehicles
【原文标准名称】:铁路运输车辆着火危险评估标准指南
【标准号】:ASTME2061-2009a
【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】:E05.17
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:Firehazardassessment;Fire-testresponse;Railtransportationvehicles;Transportation
【摘要】:Thisguideisintendedforusebythoseundertakingthedevelopmentoffirehazardassessmentsforrailtransportationvehiclesandproductscontainedwithinrailtransportationvehicles.Thisguideprovidesinformationonanapproachtodevelopafirehazardassessment,butfixedproceduresarenotestablished.Anylimitationsintheavailabilityofdata,ofappropriatetestprocedures,ofadequatefiremodels,orintheadvancementofscientificknowledge,willplacesignificantconstraintsupontheprocedurefortheassessmentoffirehazard.Afirehazardassessmentdevelopedfollowingthisguidemustspecifyallstepsrequiredtodeterminefirehazardmeasuresforwhichsafetythresholdsorpass/failcriteriacanbemeaningfullysetbyresponsibleauthorities.Itispreferredthatsuchexerciseshaveinputfromvarioussources.Outcomes:UseandApplication.Afirehazardassessmentdevelopedasaresultofusingthisguideshouldbeabletoassessanewproductbeingconsideredforuseinacertainrailtransportationvehicleandreachoneoftheconclusionslistedin4.4.1-4.4.4.NewProductSaferthanProductCurrentlyinUse.Thenewproductissafer,intermsofpredictedfireperformance,thantheoneinestablisheduse.Inthiscase,thenewproductisdesirable,fromthepointofviewoffiresafety.NewProductEquivalentinSafetytoProductCurrentlyinUse.Thereisnodifferencebetweenthepredictedfiresafetyofthenewproductandoftheoneinestablisheduse.Inthiscase,useofthenewproductprovidesneitheradvantagenordisadvantage,fromthepointofviewoffiresafety.NewProductLessSafethanProductCurrentlyinUse.Thenewproductislesssafe,intermsofpredictedfireperformance,thantheoneinestablisheduse.Inthiscase,adirectsubstitutionofproductswouldprovidealowerlevelofsafetyandthenewproductwouldbeundesirable,andshouldnotbeused,fromthepointofviewoffiresafety,withoutothercompensatorychangesbeingmade.NewProductDifferentinSafetytoProductCurrentlyinUse.Anewproductthatislesssafe,intermsofpredictedfireperformance,canneverthelessbemadeacceptableif,andonlyif,itispartofacomplete,comprehensive,firesafetydesignfortherailtransportationvehicle.Suchredesignofthevehicleshouldincludeotherfeaturessuchasuseofanalternativelayoutorincreaseduseofautomaticfireprotectionsystems,thatdemonstrablyproducethesameorbettersafetyforthecompletedesign.Insuchcases,amorein-depthfirehazardassessmentwouldhavetobeconductedtoensurethattheentiredesignachievesthesafetygoals,andthenewproductwouldbeacceptableonlyaspartofthelarger,approveddesign.Thenewproductcouldoffersomesafetyadvantagesandsomesafetydisadvantagesovertheiteminestablisheduse.Anexampleofsuchanoutcomecouldbeincreasedsmokeobscurationwithdecreasedheatrelease.Insuchcases,amorein-depthfirehazardassessmentwouldhavetobeconductedtoensurethattheadvantagesoutweighthedisadvantages,andtheresultingoveralllevelofsafetyisnolessthanthatprovidedbythetraditionalapproach(seeTableX1.1andAppendixX1).Followingtheanalysisdescribedin4.4,afirehazardassessmentdevelopedfollowingthisguidewouldreachaconclusionregardingthedesirabilityofthenewproductstudied.Itisessentialfortheresultsoftheassessmenttoleadtoadesignthatisatleastassafeastheonebeingreplaced.1.1Thisisaguidetodevelopingfirehazardassessmentsforrailtranspor......
【中国标准分类号】:C80
【国际标准分类号】:45_120
【页数】:24P.;A4
【正文语种】:英语