民用飞机后机身与尾段在球面框处对接研究

Analysis of Joint Structure Between After Fuselage and the Tail on Dome

民用飞机后机身与尾段的对接往往选择球面框(后压力隔框)位置,球面框是机身气密线的末端,该处的对接设计需要从传力、重量、成本、装配、维修、排水等多方面进行考虑,是民用飞机机体结构设计中非常重要的一个环节。针对民用飞机中后机身与尾段的连接特点,从传力等考虑要素入手,介绍了目前国际上典型机型的成熟方案,并进行方案优缺点分析、比较和总结,为我国民用飞机结构设计提供借鉴。

The joint between after fuselage and the tail for commercial aircraft locates on dome （ after pressure bulkhead） generally. Dome is the end of the pressure line. The joint structure design should take load path, weight, cost, assembly and drainage into account, is one of the most important content during fuselage design. Ac-cording to the properties of joint between after fuselage and the tail, commencing with load transfer consideration, the mature concepts of representative aircraft are introduced, and the concept analysis, comparison and summary are provided. The conclusion could provide a technology support for civil aircraft structure design.