| Abstract: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. |
