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对尾舱壳体的设计方案进行了改进。铸造、热处理及机械加工等制造工艺设计中，采取了多种控制变形和保证精度的有效措施，解决了薄壁及结构特殊的尾舱壳体制造工艺技术的难点，确保了研制工作顺利开展并获得成功。
The design of aft shell has been improved. Casting, heat treatment and machining and other manufacturing process design, to take a variety of control deformation and ensure accuracy of the effective measures to solve the thin-walled and structural special aft shell manufacturing process of the technical difficulties to ensure that the smooth development of research and development Success.