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Title: Damping element for reducing the vibration of an airfoil

Abstract

An airfoil (10) is provided with a tip (12) having an opening (14) to a center channel (24). A damping element (16) is inserted within the opening of the center channel, to reduce an induced vibration of the airfoil. The mass of the damping element, a spring constant of the damping element within the center channel, and/or a mounting location (58) of the damping element within the center channel may be adjustably varied, to shift a resonance frequency of the airfoil outside a natural operating frequency of the airfoil.

Inventors:
;
Issue Date:
Research Org.:
Siemens Energy, Inc, Orlando, FL, USA
Sponsoring Org.:
USDOE
OSTI Identifier:
1108601
Patent Number(s):
8579593
Application Number:
12/613,957
Assignee:
Siemens Energy, Inc. (Orlando, FL)
Patent Classifications (CPCs):
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
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
DOE Contract Number:  
FC26-05NT42644
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Campbell, Christian X, and Marra, John J. Damping element for reducing the vibration of an airfoil. United States: N. p., 2013. Web.
Campbell, Christian X, & Marra, John J. Damping element for reducing the vibration of an airfoil. United States.
Campbell, Christian X, and Marra, John J. Tue . "Damping element for reducing the vibration of an airfoil". United States. https://www.osti.gov/servlets/purl/1108601.
@article{osti_1108601,
title = {Damping element for reducing the vibration of an airfoil},
author = {Campbell, Christian X and Marra, John J},
abstractNote = {An airfoil (10) is provided with a tip (12) having an opening (14) to a center channel (24). A damping element (16) is inserted within the opening of the center channel, to reduce an induced vibration of the airfoil. The mass of the damping element, a spring constant of the damping element within the center channel, and/or a mounting location (58) of the damping element within the center channel may be adjustably varied, to shift a resonance frequency of the airfoil outside a natural operating frequency of the airfoil.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {11}
}

Works referenced in this record:

Airfoil vibration damping device
patent, October 1998


Sports implement swing analyzer
patent, October 1991


Blade baffle damper
patent, June 1976


Damped turbine engine frame
patent, February 1994


Gas turbine engine blade
patent, February 2003


Damped aerofoil structure
patent, October 2006