Mechanical damper
AssigneeUnited Technologies Corporation
InventorsKurt J. Bonner, Jose M. Alvarez, Jr.
Life of this patent
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Abstract
The mechanical damper is fabricated from a relatively thin metal spring stock and formed in cross-section to an E-shape that is arcuately bent into a ring that fits into the cavity defined between the inner diameter of the inner shroud and the outer diameter of the segmented back rings of the honeycomb sealing structure of the stator for the compressor of a gas turbine engine. The E-shaped damper is segmented and provides damping of the compressor stator of a gas turbine engine and is particularly adapted for stators that are formed from integrally cast stator vanes and shrouds.
Claims8
In combination, a stator for rotating machinery which includes integrally cast stator vanes and shrouds, the inner shroud of said shrouds being disposed adjacent to the inner diameter of said vanes and defining an annular surface, a segmented honeycomb seal element concentrically supported to the shroud and defining with said annular surface an annular cavity, a mechanical damper being E-shaped in cross-section fabricated from flexible, resilient spring material adaptable to form an annular shape to fit within said cavity and bear against the surface of said inner shroud in frictional relationship to dissipate energy of the vibratory motion imparted to said stator.
Dependencies are inferred from the claim text.