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【英文标准名称】:TestMethodforFreezingPointofAviationFuels(AutomatedOpticalMethod)
【原文标准名称】:航空燃料冻结点的试验方法(自动光学方法)
【标准号】:ANSI/ASTMD5901-2003
【标准状态】:作废
【国别】:美国
【发布日期】:2003
【实施或试行日期】:2003-05-10
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:烃类;冻结点;航空燃气;航空燃料;石油产品;试验
【英文主题词】:Aerospacetransport;Aviationfuels;Aviationgas;Freezingpoint;Hydrocarbons;Petroleumproducts;Testing;Tests
【摘要】:Thistestmethodcoversthedeterminationofthetemperaturebelowwhichsolidhydrocarboncrystalsmayforminaviationturbinefuels.Note1-ThistestmethoddescribesanalternativeprocedureandautomatedapparatuswhichmimicstheapparatusandproceduredescribedinTestMethodD2386.Themeasuringrangeoftheapparatusisfrom0to-70?C.Theprecisionstatementswerederivedfromsampleswithfreezingpointtemperaturesfrom-45to-65?C.Note2-Typicalaviationfuelhasfreezingpointtemperaturesinthe-40to-65?Crange.Sampleswithhigherfreezingpointswerenotavailableforthecurrentinterlaboratoryprogram.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,seeSection7.
【中国标准分类号】:E31
【国际标准分类号】:49_025_99;75_160_20
【页数】:
【正文语种】:英语


Product Code:SAE AIR5937
Title:Information on Electric Brakes
Issuing Committee:A-5a Wheels, Brakes And Skid Controls Committee
Scope:This SAE Aerospace Information Report (AIR) describes the design, operation, and attributes of electrical braking systems for both military and commercial aircraft. At this time, the document focuses only on brakes utilizing electromechanical actuators (EMAs), as that is the present state of the art. As such, the discussions herein assume that EMAs can simply replace the hydraulic actuation portion of typical brake system leaving things such as the wheel and heat sink unchanged. Furthermore, the document provides detail information from the perspective of brake system design and operation. The document also addresses failure modes, certification issues, and past development efforts. Details on the design and control of electric motors, gear train design, ball or roller screw selection are available in the reference documents and elsewhere, but are outside the scope of this document.