变循环涡扇冲压组合发动机发展现状及关键技术分析

The development status of variable cycle turbofan-ramjet (VCTR) engines at home and abroad was summarized, and the operating principles, advantages and disadvantages of two typical configurations of VCTR engines, with or without energy transfer between the turbine engine and the ramjet flowpaths, were comparatively analyzed. The key technologies of VCTR engines are defined and discussed, including engine performance design and simulation technology, high-speed and wide-range fan design technology, after/ram burner (hyperburner) design technology, thermal management system (TMS) design technology, and mode transition design technology. Based on the domestic need and related research status for the VCTR engines, the following issues are proposed to be further investigated: VCTR engine performance design and simulation tool, multi-design points and multi-disciplinary coupling design methodology, TMS design and modeling, and design and test of critical components.