SAE J2939 Child Restraint Systems/Latch Terminology - Glossary of Terms
作者:标准资料网 时间:2024-05-24 03:54:36 浏览:8922
来源:标准资料网
Product Code:SAE J2939
Title:Child Restraint Systems/Latch Terminology - Glossary of Terms
Issuing Committee:Children'S Restraint Systems Committee
Scope: To develop a comprehensive list of terms and definitions to facilitate clearer and more consistent consumer information.
Rationale: To develop a comprehensive list of terms and definitions to facilitate clearer and more consistent consumer information.
【英文标准名称】:StandardPracticefortheSelectionofSpacecraftMaterials
【原文标准名称】:航天器材料的选择用标准实施规程
【标准号】:ASTME1997-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E21.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:航空航天运输;材料消耗;质量要求;航天器
【英文主题词】:applications;contamination;design;designreview;materialsapplications;materialsselection;preferredmaterials;problemmaterials;processlist;processes;spaceapplications;spacecraftmaterials;testing;unmannedspacecraft;Coefficientoftherma
【摘要】:Thispracticeisaguidelineforpropermaterialsandprocessselectionandapplication.Thespecificapplicationoftheseguidelinesmusttakeintoaccountcontractualagreements,functionalperformancerequirementsforparticularprogramsandmissions,andtheactualenvironmentsandexposuresanticipatedforeachmaterialandtheequipmentinwhichthematerialsareused.Guidelinesarenotreplacementsforcarefulandinformedengineeringjudgmentandevaluationsandallpossibleperformanceanddesignconstraintsandrequirementscannotbeforeseen.Thispracticeislimitedtounmannedsystemsandunmannedorexternalportionsofmannedsystems,suchastheSpaceStation.Generally,itisapplicabletosystemsinlowearthorbit,synchronousorbit,andinterplanetarymissions.Althoughmanyofthesuggestionsandcautionsareapplicabletobothunmannedandmannedspacecraft,mannedsystemshaveadditionalconstraintsandrequirementsforcrewsafetywhichmaynotbeaddressedadequatelyinunmanneddesigns.Becauseoftheaddedconstraintsandconcernsforhuman-ratedsystems,thesesystemsarenotaddressedinthispractice.1.1Thepurposeofthispracticeistoaidengineers,designers,qualityandreliabilitycontrolengineers,materialsspecialists,andsystemsdesignersintheselectionandcontrolofmaterialsandprocessesforspacecraft,externalportionofmannedsystems,orman-tendedsystems.Spacecraftsystemsareverydifferentfrommostotherapplications.Spaceenvironmentsareverydifferentfromterrestrialenvironmentsandcandramaticallyaltertheperformanceandsurvivabilityofmanymaterials.Reliability,longlife,andinabilitytorepairdefectivesystems(orhighcostanddifficultlyofrepairsformannedapplications)arecharacteristicofspaceapplications.Thispracticealsoisintendedtoidentifymaterialsprocessesorapplicationsthatmayresultindegradedorunsatisfactoryperformanceofsystems,subsystems,orcomponents.Examplesofsuccessfulandunsuccessfulmaterialsselectionsandusesaregivenintheappendices.
【中国标准分类号】:V10
【国际标准分类号】:49_025_01
【页数】:17P.;A4
【正文语种】:
