强预冷涡轮发动机关键技术分析

Key Technology Analysis of Precooled Turbine Engine

以强预冷技术扩展现有成熟涡轮发动机的飞行速度范围,从而实现与超燃冲压发动机的“接力”,是高超声速飞机动力的一种典型方案。强预冷涡轮发动机的研制,需要系统性地攻克一大批关键技术。根据国内外研究现状,本文梳理了强预冷涡轮发动机的技术难点,对相关关键技术进行了分析和归纳,如有适应宽工况范围的高效紧凑预冷器设计和加工工艺、预冷系统与涡轮发动机全工况匹配技术、强预冷发动机与进排气系统协同设计等,为国内组织开展相关研究和工程研制提供参考。

It is a typical program for hypersonic aircraft power that the flight speed range of the mature turbine engine is extended by strong precooled technology so as to fulfill the'relay'with the supercombustion ramjet engine.The precooled turbine engine development needs to tackle lots of key technologies.Based on the current research in both China and abroad,this paper sorts out the technical difficulties of the precooled turbine engine,and analyze and summarize the relevant key technologies,such as high efficient compact precooler design and machining technology for wide working condition,the full working condition matching technology of precooled system and turbine engine as well as the coordinate design of strong precooled engine and intake and exhaust system,so as to provide references for relevant R&D.