초록 ▼

A multi-stage rotor assembly for a gas turbine engine includes a damper system that facilitates damping vibrations induced to the rotor assembly. The rotor assembly includes a blisk rotor including a plurality of rotor blades and a radially outer rim. The rotor blades are integrally formed with the

A multi-stage rotor assembly for a gas turbine engine includes a damper system that facilitates damping vibrations induced to the rotor assembly. The rotor assembly includes a blisk rotor including a plurality of rotor blades and a radially outer rim. The rotor blades are integrally formed with the rim and extend radially outward from the rim. The damper system is attached to rotor blades within at least one stage of the rotor assembly, and includes at least one layer of damping material and a cover sheet. The cover sheet is attached to the rotor blade with adhesive.

대표청구항 ▼

1. A method of fabricating a rotor assembly for a gas turbine engine to facilitate damping vibrations induced to the rotor assembly, the rotor assembly including a radially outer rim and a plurality of rotor blades that extend radially outward from the radially outer rim, each of the rotor blades in

1. A method of fabricating a rotor assembly for a gas turbine engine to facilitate damping vibrations induced to the rotor assembly, the rotor assembly including a radially outer rim and a plurality of rotor blades that extend radially outward from the radially outer rim, each of the rotor blades including an airfoil including a pair of opposing sidewalls, said method comprising the steps of:forming a cavity in each rotor blade airfoil that extends radially inward from the airfoil first sidewall towards the airfoil second sidewall; embedding a first layer of damping material within the airfoil cavity adjacent the airfoil; and attaching a constraining layer to the airfoil with adhesive, such that the constraining layer is adjacent the first layer of damping material; and attaching a cover sheet to the airfoil with adhesive, such that the cover sheet extends around a periphery of the airfoil cavity in sealing contact with the airfoil.