目前 ,大量的可控扩散叶型 (CDA)已设计应用于多级轴流压气机中。通过亚音、跨音叶栅实验 ,证明了在可比的气动设计条件下 ,CDA叶栅可以达到更高的临界马赫数、更大的冲角范围和更高的负荷。通过单级或多级测试 ,CDA提供了更高的效率、更高的负荷、且易于进行级间匹配 ,并最终减少研发费用 ,提高喘振裕度 ;由于 CDA叶型具有增厚的前缘和尾缘 ,这为压气机寿命的提高提供了保证 At present, a large number of controllable diffuser (CDA) has been designed for multi-stage axial compressor. With subsonic and transonic cascade experiments, it is demonstrated that CDA cascades can achieve higher critical Mach number, larger attack angle range and higher load under comparable aerodynamic design conditions. Through single or multi-stage testing, CDA provides higher efficiency, higher load, and easy interstage matching, and ultimately reduce research and development costs and improve surge margin; as the CDA leaf has a thicker leading edge And the trailing edge, which provides a guarantee for the life of the compressor