基于循环参数分析的涡轮基组合动力系统用高速涡轮发动机构型方案

High-speed Turbine Engine Configuration Scheme for Turbine-Based Combine Cycle Power System Based on Cycle Parameter Analysis

中文关键词:  临近空间高超声速  涡轮基组合循环发动机  高速涡轮发动机  构型  循环参数

英文关键词:near-space hypersonic  turbine based combined cycle engine  high-speed turbine engine  configuration  cycle parameter

中文摘要:

      在涡轮基组合动力系统的使用场景中，高速涡轮发动机为了实现起飞、跨声速、模态转换等状态下的性能指标，需要扩 展使用速域范围，兼顾多状态推力性能，对于发动机构型和循环参数选取提出了特殊的要求。开展基于循环参数分析的高速涡轮 发动机构型方案设计，通过分析高速涡轮发动机在不同速域下的使用需求，明确发动机的技术特征，并从性能、结构、技术发展趋 势等多角度对高速涡轮发动机构型进行分析，针对双转子涡扇构型的高速涡轮发动机开展循环参数分析，明确压比、涵道比和涡 轮前温度对发动机不同工况性能的影响。结果表明：变循环是高速涡轮发动机的理想构型方案。现阶段应基于双转子涡扇构型 逐步集成变循环特征部件，并通过合理的循环参数匹配，实现高低速性能的兼顾。

英文摘要:

      In the application scenarios of turbine-based combined cycle power system, high-speed turbine engines need to expand the use speed range and consider multi-state thrust performance to achieve performance measures under conditions such as takeoff, transonic, and mode transition. Special requirements are put forward for engine configuration and cycle parameter selection. The configura? tion scheme design for high-speed turbine engines was conducted based on cycle parameter analysis. By analyzing the usage requirements of high-speed turbine engines in different speed domains, the technical characteristics of the engine were defined, and the configuration of the high-speed turbine engine was analyzed from multiple perspectives such as performance, structure, and technology development trends. The cycle parameter analysis of the high-speed turbine engine with a twin-spool turbofan configuration was conducted to clarify the influences of pressure ratio, bypass ratio, and turbine entry temperature on engine performance under different operating conditions. The results show that the variable cycle configuration is the ideal scheme for high-speed turbine engines. At present, it is necessary to gradually integrate variable cycle characteristic components based on the twin-spool turbofan configuration, and achieve a balance between high- and low-speed performance through reasonable cycle parameter matching.