VIBRATION DAMPING ELEMENT FROM ONE DAWN TO THE OTHER

摘要

P A vibration damping element 42 is described from one blade to the other for vanes of a turbine rotor. Each blade 10 has an aerodynamic plane 11, a platform 12 and a root 13. A plurality of vanes are spaced circumferentially from each other around a rotor disk. An inclined recess 40; 41 extends in the platform of each blade from a first surface thereof, and in the direction of its root. A damping member 42 in the form of a U-shaped wire has its folded ends 44 which are slidably received in each recess. When the disk is rotated by a sufficient angular velocity, the damping elements move outward under the effect of the centrifugal force to come into contact with the opposite surface of the platform. of the adjoining dawn. After coming into contact, the elements dampen the vibrations of the blades and seal the gap between the opposite surfaces of the platform. / P P Application to the vanes of a gas turbine engine. / P