Powder-lubricated damper with wavy damper pads
AssigneeMechanical Technology Incorporated
InventorHooshang Heshmat
Life of this patent
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Abstract
The damper arrangement is operated in high temperature applications, such as load and speed environments such as found in turboengines. The damper arrangement includes damper pads which are laterally urged against damping elements forming a shearing zone therebetween. The shearing zone is lubricated with solid dry powder lubricant. The damper pads include a circumferential wave or a multi-partial arc configuration formed by radial slots with inwardly tapering radial bevels and lateral bevels adjacent to the radial slots to enhance the circulation of the powder lubricant in response to nutating motion between the damper pad and the damper element.
Claims8
A damper arrangement adapted for use in temperatures exceeding 1000.degree. F., comprising circular damper pads abutting damper elements thereby forming a shearing zone, said damper pads including a wavy outer surface, and a dry solid powdered lubricant circulated about said damper pads and said damper elements in response to motion between said damper pads and said damper elements.
A damper arrangement adapted for use in temperatures exceeding 1000.degree. F., comprising circular damper pads abutting nutating damper elements thereby forming a shearing zone within a damper chamber formed within a stator, said damper pads including a wavy outer surface, wherein a dry solid powdered lubricant is fed to said damper elements and said damper pads and is circulated within said damper chamber by a carrier gas injected into said damper chamber through at least one inlet port.
Dependencies are inferred from the claim text.