第14卷第1期2023年2月Vol.14No.1Feb.2023航空工程进展ADVANCESINAERONAUTICALSCIENCEANDENGINEERING民用飞机发动机吊挂应急断离设计研究陈海欢,李泽江,陈少凯(上海飞机设计研究院飞机结构强度工程技术所,上海201210)摘要:发动机吊挂应急断离是民用飞机设计的关键核心技术之一,国外相关技术难以获取,国内以理论研究和提出主要思路为主,与工程实现存在差距。基于此,从适航标准入手,研究吊挂、保险销和机翼三者的应急断离设计载荷大小的关系,通过场景分析,研究界面结构强度计算的载荷确定方法。结果表明:吊挂应急断离设计仅需单独考虑发动机主载荷向上或主载荷向后工况,合理给定吊挂、保险销和机翼结构三者的应急断离设计载荷大小关系可有效降低结构重量;机翼/吊挂界面载荷方向则必须结合结构细节做具体的应急断离场景分析。关键词:吊挂;应急断离;保险销;载荷;场景分析;适航中图分类号:V224.2文献标识码:ADOI:10.16615/j.cnki.1674-8190.2023.01.13StudyonenginepylonemergencyseparationdesignofcivilaircraftCHENHaihuan,LIZejiang,CHENShaokai(AircraftStucture&StressDivision,ShanghaiAircraftDesignandResearchInstitute,Shanghai201210,China)Abstract:Enginepylonemergencyseparationisoneofthekeytechnologiesincivilaircraftdesign,whichisdiffi⁃culttoobtainfromabroad.Domesticresearchesaremainlyabouttheoriesandthoughts,whichcannotbeappliedonengineering.Inthispaper,theresearchonrelationshipofdesignloadsamongpylon,fusepinandwingboxiscar⁃riedoutbasedonairworthinessstandards.Loaddeterminationmethodsforstrengthcalculationofinterfacestruc⁃turesisproposedthroughscenarioanalysis.Theresultsshowthattheenginepylonemergencyseparationdesignonlyneedstoconsiderpredominantlyupwardloadsandaftloadsseparately.Givingreasonablerelationshipofde⁃signloadsamongpylon,fusepinandwingboxcanreducetheweightofstructures.Loaddirectionsofcomponentsconnectingthepylontothewingshouldbedeterminedthroughscenarioanalysisconsideringstructuraldetails.Keywords:pylon;emergencyseparation;fusepin;load;scenarioanalysis;airworthiness文章编号:1674-8190(2023)01-114-07收稿日期:2022⁃01⁃28;修回日期:2022⁃06⁃22通信作者:陈海欢,chenhaihuan@comac.cc引...