Damping system for an integrally bladed rotor

A rotor blade portion of an integrally bladed disk, comprising:

• an airfoil extending chordwise between a leading edge and a trailing edge, and extending spanwise between a base end and a blade tip;
• a damper pocket (DP) extending into the airfoil from the base end to a DP top side surface, the damper pocket having a first tapered configuration;
• a damper body (DB) disposed within the damper pocket, wherein the damper body includes a second tapered configuration and a DB top side surface, wherein the second tapered configuration of the damper body mates with the first tapered configuration of the damper pocket;
• a weld collar affixed to the base end of the airfoil, the weld collar including a weld collar aperture that is aligned with the damper pocket and configured to receive the damper body;
• and
• a plug disposed within the weld collar aperture and affixed to the weld collar;
• wherein the damper pocket and the damper body are disposable in an engaged configuration in which the DB top side surface is spaced apart from the DP top side surface.

An integrally bladed disk, comprising:

• a disk having an outer radial hub extending circumferentially about a rotational axis;
• and
• a plurality of rotor blades, each of the plurality of rotor blades having an airfoil, the airfoil extending chordwise between a leading edge and a trailing edge, the airfoil extending spanwise between a base end and a blade tip, and each of the plurality of rotor blades comprising
• a damper pocket extending into the airfoil from the base end, the damper pocket provided with a first tapered configuration;
• a damper body disposed within the damper pocket, the damper body provided with a second tapered configuration, wherein the second tapered configuration of the damper body mates with the first tapered configuration of the damper pocket;
• and
• a plug securing the damper body within the damper pocket;
• wherein the first tapered configuration of the damper pocket (DP) includes a DP top side surface and a single DP side surface that extends circumferentially and extends spanwise from the base end to the DP top side surface, and converges in a direction from the base end to the DP top side surface;
• and
• wherein the second tapered configuration of the damper body (DB) includes a DB top side surface, a DB bottom side surface, and a single DB side surface that extends circumferentially and extends between the DB bottom side surface to the DB top side surface, and converges in a direction from the DB bottom side surface to the DB top side surface;
• and
• wherein the damper pocket and the damper body are disposable in an engaged configuration wherein the DB top side surface is spaced apart from the DP top side surface.