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US 10,590,798 B2Granted
Non-integral blade and platform segment for rotor
AssigneeUnited Technologies Corporation
InventorBlake Luczak
Life of this patent
Estimating the term…
Abstract
A rotor includes a rotor hub, a plurality of blades mounted in a circumferentially-spaced arrangement on the rotor hub and a plurality of platform segments circumferentially arranged, respectively, between neighboring ones of the blades. The platform segments include core gas-path defining surfaces and are mounted with a freedom to circumferentially move relative to the neighboring ones of the blades.
Claims13
A rotor comprising:
- a rotor hub;
- a plurality of blades mounted in a circumferentially-spaced arrangement on the rotor hub;
- and
- a plurality of platform segments circumferentially arranged, respectively, between neighboring ones of the plurality of blades, the plurality of platform segments including core gas-path defining surfaces, each of the plurality of platform segments being mounted with a freedom to circumferentially move relative to the respective neighboring ones of the plurality of blades, the plurality of platform segments including non-gas path defining surfaces disposed opposite from the core gas path defining surfaces and hooks projecting from the non-gas path defining surfaces, the hooks interlocking with corresponding hooks of attachment members that are distinct from the rotor hub and that are secured to the rotor hub, the attachment members engaging radially inwardly facing surfaces of the rotor hub with respect to a rotational axis of the rotor hub.
1 more element
A method of damping in a rotor, the method comprising:
- providing a rotor hub, a plurality of blades mounted in a circumferentially-spaced arrangement on the rotor hub and a plurality of platform segments circumferentially arranged, respectively, between neighboring ones of the plurality of blades, each of the plurality of platform segments including, respectively, core gas-path defining surfaces, the plurality of platform segments including non-gas path defining surfaces disposed opposite from the core gas-path defining surfaces and hooks projecting from the non-gas path defining surfaces, the hooks interlocking with corresponding hooks of attachment members that are distinct from the rotor hub and that are secured to the rotor hub, the attachment members engaging radially inwardly facing surfaces of the rotor hub with respect to a rotational axis of the rotor hub;
- and
- damping vibration in the rotor with circumferential movement of the plurality of platform segments relative to the respective neighboring ones of the plurality of blades.
Dependencies are inferred from the claim text.