Non-contacting dynamic seal

Abstract

A method of damping vibrations in a seal includes inserting a first wave spring between a first beam and a second beam of the seal. The seal can be for a gas turbine engine and can include a full hoop outer ring, a shoe coupled to the full hoop outer ring via the first beam (e.g., an outer beam) and the second beam (e.g., an inner beam), and the first wave spring in contact with the first beam and the second beam.

1 . A method of damping vibrations in a seal comprising:
 inserting a first wave spring between a first beam and a second beam of the seal.   
     
     
         2 . The method of  claim 1 , wherein the wave spring comprises a first antinode and a second antinode in contact with the first beam, and a third antinode in contact with the second beam. 
     
     
         3 . The method of  claim 2 , further comprising configuring the first antinode and the second antinode to slide against the first beam. 
     
     
         4 . The method of  claim 1 , wherein the seal is a non-contacting dynamic seal. 
     
     
         5 . The method of  claim 1 , further comprising inserting a second wave spring between the second beam and a shoe of the seal. 
     
     
         6 . The method of  claim 1 , wherein the first beam and the second beam extend from a full hoop outer ring of the seal, and the full hoop outer ring, the first beam, and the second beam are a single piece of material. 
     
     
         7 . The method of  claim 3 , wherein the first antinode is configured to slide against the first beam in a first direction and the second antinode is configured to slide against the first beam in a second direction different from the first direction. 
     
     
         8 . The method of  claim 3 , wherein the first antinode and the second antinode are configured to slide against the first beam in response to the vibrations in the seal.