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 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:
- 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}
}
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