DEVICE FOR AXIAL COMPRESSOR AERODYNAMIC NOISE REDUCTION AND METHOD OF ITS IMPLEMENTATION Russian patent published in 2018 - IPC F04D27/02 F04D29/66 F04D29/54 

FIELD: turbine construction.

SUBSTANCE: device for reducing the aerodynamic noise of the axial compressor comprises an impeller of the first stage, and an annular electromagnet of the spline type is mounted on the inner surface of the shell of the axial compressor in the radial clearance zone. In the method for reducing the aerodynamic noise of an axial compressor, the electronic unit controlled by the regulator, into which the electric signal of the recording microphone arrives, after comparing with the reference, forms an electromagnetic field in the frequency range of 10⁹ to 10¹³ Hz, tuning it to the fluid characteristics.

EFFECT: invention may be used in the input stages of axial compressors of turbomachines.

2 cl, 2 dwg