涡轴(涡桨)/涡扇(涡喷)发动机通用核心机技术

Versatile core engine technology for turboshaft(turboprop)/turbofan(turbojet) engines

通用核心机技术不仅可增加所发展发动机的通用零件数,缩短研制周期,还可使所发展的各类发动机性能均较先进.不同流量的通用核心机可相应发展不同功率/推力范围的各类发动机,通用核心机的设计需考虑强度与气动性能的折衷,其部件应有宽广的高效与稳定工作范围,且通用前提下也允许核心机后续发展时有小的变动.文中最后讨论了某中小型通用核心机方案设计中涡轮级数和压气机形式的选择问题.

The development of aero engine technology makes it necessary to study the versatile core engine technology. Versatile core engine technology not only increases the number of the common parts of the developed engines, reduces its research and development periods, but also improves the performances of all the types of the developed engines. Aero engines of different kinds with a certain power/thrust class could be derived from the corre sponding versatile core engine with a certain mass flow amount. The design of versatile core engine must make a compromise between strength and aero-dynamic performance, and its components must be able to work effectively and stably within a wide range of operation; moreover, the versatile core engine should allow some small changes in the follow up development. This paper discusses the issues for the turbine stage numbers and the compressor form in the conceptual design of a medium small scale versatile core engine.