Experimental Study of the Vibration Phenomenon of Compressor Rotor Blade Induced by Inlet Probe Support

• DOI: 10.1007/s11630-021-1447-y
• Publication Date: 2021-04-05T05:02:46Z
• Authors: Yong Yang; Honghui Xiang; Jie Gao; Kaijun Xu; Rongfei Yang; Ning Ge
• Keywords: Axial Compressor

An experimental investigation was conducted in order to understand the installation effects of inlet measurement probes on the vibration characteristics of the rotor blades in two axial compressors. The vibration signal of the rotor blades was analyzed for different layouts of the inlet measurement probes. For the three-stage axial compressor, the first-order resonance occurs on the first stage of the rotor blades at an engine order excitation condition, which is induced by the cylindrical probe support with a diameter of 10 mm. When the size of the probe support is decreased, the vibration level reduces evidently. In contrast, for the six-stage axial compressor, the first-order resonance occurs on the first stage of the rotor blades at an excitation source of 6th order, which is triggered by the inlet measurement probes and the upstream struts. When the number of the inlet measurement probes is changed, the resonance of the rotor blades vanishes.