Patent ID: 6102664
Filing Date: 2000-08-15
Classification: F01D,F04D,Y02T,Y10S

Abstract:
In a turbomachine including at least one stator disc having a plurality of radial stator vanes, and at least one rotor disc terminating in a plurality of radial hubs to retain a plurality of blading systems, each of the blading systems comprising in combination:a blade formed of an airfoil and a root attachment;said root attachment being dimensioned to fit within and to engage a corresponding one of the hubs, and including at least one outer surface on which a compressive and shear force develops upon rotation of said rotor disc; andat least one viscoelastic damper positioned against said outer surface of said root attachment, intermediate said root attachment and said corresponding one of the hubs, for compression therebetween upon rotation of said rotor disc to dampen vibration energy resulting from the passage of said blade in proximity to the stator vanes, without affecting the aerodynamic performance of the turbomachine.