Embedded Row Flutter and Aerodynamic Damping

压气机叶片中的颤振会受到来自相邻叶片排的声反射的影响。以前的研究已经确定了在什么条件下，声反射是重要的，要考虑在详细的空气力学计算。然而，在这种分析中仍有许多复杂问题需要处理。同样，随着风扇和压缩机对叶片盘的依赖程度越来越高，详细了解气动阻尼与了解力的作用同样重要，甚至更重要。这项研究将扩展对声反射在嵌入式排颤振中的影响的基本理解，并使罗尔斯·罗伊斯能够改进其工具，从而改进部件设计。

Flutter in compressor blades can be affected by the acoustic reflections from an adjacent blade row. Previous research has identified under what conditions the acoustic reflections are important to be considered in detailed aero-mechanical calculations. However, there are still many complexities which need to be addressed in such analyses. Equally, with more reliance on bladed disks in fans and compressors, detailed knowledge of the aerodynamic damping is equally - if not more important - as the knowledge of the forcing. This research would extend the fundamental understanding of the influence of acoustic reflections in embedded row flutter and enable Rolls-Royce to improve its tools leading to improved component designs.