Patent ID: 7458769
Filing Date: 2008-12-02
Classification: F01D,F04D,F05D

Abstract:
1. A device for damping vibration of an axial retention ring for retaining fan blades of a turbomachine, said fan blades being designed to be mounted via their roots on a rotary disk including an annular flange extending axially and provided with a plurality of radial crenellations for coming into contact with a plurality of complementary radial crenellations of the retention ring that is to be mounted around said flange of the disk, said device being made up of an abutment element of elastomer material that is to be received axially between two adjacent crenellations of the flange and two adjacent complementary crenellations of the retention ring, and radially between the flange of the rotary disk and the retention ring, said abutment element presenting contact surfaces for coming into contact with said adjacent crenellations, with the retention ring, and with the flange of the rotary disk.