平均载荷系数0.5一级的双模式压气机设计研究与验证

To comprehensively improve the development capability of compressor，the design and verification of a four-stage compressor with a single and double-bypass mode（dual-mode）core driven fan stage with an average load coefficient of 0.5 was introduced . It is characterized by high average load coefficient and the large variation of performance of the dual-mode. The design technology of high-load compressor with a dual-mode design point，the design technology of guide vane with low loss and large flow rate range，and the design technology of adjustable stator with low loss and large angle of attack range were studied . The design of a high-load four-stage compressor combined with a dual-mode core driven fan stage was accomplished and the 3D simulation of 80%~100% relative rotating speed was conducted to explore the matching of each stage under the two modes of single and double-bypass. The test results show that the compressor flow rate，pressure ratio and efficiency meet the design index under the single and double-bypass modes. The maximum efficiency of the single-bypass mode is 0.874 at 100% relative rotating speed，and that of the double-bypass mode is 0.87 at 92.4% relative rotating speed. Under the two modes，the compressor flow regulation range reaches 31.4%，which is well matched at all stages. It has broken through the key technologies such as the integrated matching design of dual-mode core driven fan stage and compressor and the design of high-load compressor with an average load coefficient of 0.5. It provides data and method support for the development of the next generation aero engines.