基于TRIZ理论的进气道调节机构创新设计

Innovative design of inlet adjustment mechanism based on TRIZ

为满足涡轮基组合循环(TBCC)发动机的宽速域调节要求,进气道需要实现变几何调节。在高空高速环境下,现有设计方案存在无法在受限空间内解决分流板推力需求过大的问题。首先提出了基于TRIZ理论的创新设计框架,匹配TRIZ理论中各工具的联系,进行问题的分析、求解及系统的解耦。在TRIZ理论构建的正向设计框架中引入了反向设计流程,构成闭环反馈环节,使整个设计过程更加具体与完善,为复杂约束及多维度多目标系统提供了解决途径。根据提出的理论框架,运用TRIZ理论中的物-场分析、矛盾分析、功能导向搜索等多个工具进行进气道调节机构的创新设计,加快了该机械结构设计流程,提高了创新设计效率。

In order to meet the wide speed range adjustment requirements of the turbine-based combined cycle(TBCC)engine,the inlet needs to be adjusted with variable geometry.In the high-altitude and high-speed environment,the existing design scheme cannot solve the problem of excessive thrust demand of the splitter plate in a confined space.Firstly,an innovative design framework based on TRIZ theory is proposed,which matches the connection of various tools in TRIZ theory to analyze and solve problems and decouple the system.In the forward design framework constructed by TRIZ theory,the reverse design process is introduced to form a closed-loop feedback link,which makes the entire design process more specific and complete,and provides a solution for complex constraints and multi-dimensional and multi-objective systems.According to the proposed theoretical framework,the innovative design of the air inlet adjustment mechanism is carried out using multiple tools such as object-field analysis,contradiction analysis,and function-oriented search in TRIZ theory,which speeds up the mechanical structure design process and improves the efficiency of innovative design.