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Title: Airfoil with cavity damping

Abstract

An article, such as a turbine blade, includes an airfoil. The airfoil includes a body, the body having an elongated internal cavity extending from a tip of the body. The cavity is defined an internal wall within the body. At least one elongated damping element is disposed in the elongated internal cavity and frictionally engages the internal wall. Thus, the least one elongated damping element is capable of damping vibrations in the article.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1892955
Patent Number(s):
11339666
Application Number:
16/851,629
Assignee:
General Electric Company (Schenectady, NY)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
DOE Contract Number:  
FE0031613
Resource Type:
Patent
Resource Relation:
Patent File Date: 04/17/2020
Country of Publication:
United States
Language:
English

Citation Formats

Hart, Andrew Clifford, Delvaux, John McConnell, Weber, Joseph Anthony, Zhang, James, and de Diego, Peter. Airfoil with cavity damping. United States: N. p., 2022. Web.
Hart, Andrew Clifford, Delvaux, John McConnell, Weber, Joseph Anthony, Zhang, James, & de Diego, Peter. Airfoil with cavity damping. United States.
Hart, Andrew Clifford, Delvaux, John McConnell, Weber, Joseph Anthony, Zhang, James, and de Diego, Peter. Tue . "Airfoil with cavity damping". United States. https://www.osti.gov/servlets/purl/1892955.
@article{osti_1892955,
title = {Airfoil with cavity damping},
author = {Hart, Andrew Clifford and Delvaux, John McConnell and Weber, Joseph Anthony and Zhang, James and de Diego, Peter},
abstractNote = {An article, such as a turbine blade, includes an airfoil. The airfoil includes a body, the body having an elongated internal cavity extending from a tip of the body. The cavity is defined an internal wall within the body. At least one elongated damping element is disposed in the elongated internal cavity and frictionally engages the internal wall. Thus, the least one elongated damping element is capable of damping vibrations in the article.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {5}
}

Works referenced in this record:

Internally damped blade
patent, June 2011


Stationary Blade and Steam Turbine
patent-application, December 2010


Damping element for reducing the vibration of an airfoil
patent, November 2013


Rotor blade for a gas turbine engine
patent, November 1984


Impingement baffle collars
patent, August 1976


Turbine Engine with an Airfoil and Insert
patent-application, November 2018


Airfoil with convex sides and multi-piece baffle
patent-application, May 2020


Turbine engine airfoil insert
patent-application, November 2018


Steam turbine
patent, January 2002


Manufacturing method for a baffle-containing blade
patent-application, August 2016


Rotor blade for a gas turbine engine
patent, October 1979