Fluid-filled frequency-tunable vibration damper
AssigneeUnited States of America as represented by the Administrator of NASA
InventorsRobert E. Berry, Jeffrey L. Lindner, W. Neill Myers, John S. Townsend
Life of this patent
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Abstract
A frequency-tunable vibration damper includes a first container having rigid wall regions and compliant wall regions. A second container is coupled to the first container such that a wall region of the second container includes one of the compliant wall regions. A fluid fills the first container and a gas fills the second container. A flow restrictor is included in the second container and is spaced-apart from the one of the compliant wall regions included with the second container.
Claims15
A frequency-tunable vibration damper, comprising:
- a first container having rigid wall regions and compliant wall regions, wherein at least a portion of said rigid wall regions is adapted to be coupled to a structure;
- a second container coupled to said first container, wherein a wall region of said second container includes one of said compliant wall regions;
- a liquid filling said first container;
- a gas filling said second container, wherein said gas is isolated from said liquid;
- and
- a flow restrictor included in said second container and spaced-apart from said one of said compliant wall regions, said flow restrictor defining a gas flow path between an inside of said second container and an ambient atmosphere outside of said second container.
A frequency-tunable vibration damper, comprising:
- a first container having of at least one longitudinally-extending duct, said first container having rigid wall regions and compliant wall regions, wherein at least a portion of said rigid wall regions is adapted to be coupled to a structure;
- a second container coupled to said first container, wherein a wall region of said second container includes one of said compliant wall regions;
- a liquid completely filling said first container, wherein movement of said liquid causes movement of said compliant wall regions;
- a gas filling said second container, wherein said gas is isolated from said liquid;
- and
- a flow restrictor included in said second container and spaced-apart from said one of said compliant wall regions, wherein said movement of said liquid causes movement of said gas through said flow restrictor, said flow restrictor defining a gas flow path between an inside of said second container and an ambient atmosphere outside of said second container.
A frequency-tunable vibration damper, comprising:
- a first container having rigid wall regions and compliant wall regions, wherein at least a portion of said rigid wall regions is adapted to be coupled to a structure;
- a second container coupled to said first container, wherein a wall region of said second container includes one of said compliant wall regions;
- a liquid completely filling said first container, wherein movement of said liquid causes movement of said compliant wall regions, said liquid being selected from the group consisting of water and mixtures that include water;
- a gas filling said second container, wherein said gas is isolated from said liquid;
- and
- a flow restrictor included in said second container and spaced-apart from said one of said compliant wall regions, said flow restrictor defining a gas flow path between an inside of said second container and an ambient atmosphere outside of said second container.
Dependencies are inferred from the claim text.