航空发动机复杂控制构件创新设计与快速成形

Innovative design and rapid prototyping of the aero engine’s complex control members

分析了航空发动机传统复杂控制构件深孔加工的难点及直角转弯交叉孔流场特性。基于选区激光熔化(Selective Laser Melting,SLM)技术的创新设计和快速成形在新一代航空发动机控制系统复杂构件研制中的优势不断显现:通过运用集约化和轻量化的设计思路,改变了传统的设计模式和产品架构。通过设计随形流道,降低了液流运动过程中的能量损失。通过支撑优化设计、成形过程模拟等工艺设计和仿真,减少了试错过程,提升了研发效益,实现了产品研制快速迭代。

In this article,the analysis is conducted on the difficulties in the deep-hole machining of traditional complex control members in the aero engine system and the flow field characteristics of right-angled turning intersect holes.The advanced technology of the innovative design and rapid prototyping of the new-generation aero engine’s complex control members,which is based on Selective Laser Melting(SLM),shows its advantage.The traditional design pattern and the product structure have changed thanks to the ideas of intensive and lightweight design.The energy loss during the fluid flow is reduced,benefiting from the design of conformal flow channel.Through the support-based optimization design,prototyping-process simulation and other forms of process design and simulation,the trial and error process is reduced,more benefits of research and development are yielded,and the rapid iteration of product development is realized.