Gas turbine engine blade mounting arrangement
AssigneeUnited Technologies Corporation
InventorsEric J. Ward, Brian K. Richardson
Life of this patent
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Abstract
A mounting arrangement for a gas turbine engine blade having a root employs a lightweight, simple and economical leaf spring spacer which biases the blade root in a radially outward direction to minimize unwanted movement of the root within a conforming slot in a blade hub under conditions such as windmilling when centrifugal force alone is inadequate to tightly seal the root within the slot.
Claims20
A mounting arrangement for a gas turbine engine blade having a radially directed axis and a radially inner root received within a slot in an associated blade hub, said mounting arrangement including an elongate resilient leaf spring spacer received within said slot between a radially innermost end of said blade root and a radially innermost surface of said slot by interference fit therebetween such that said spacer exerts a radially outward force on said blade root to reduce radial movement of said blade root within said slot.
A blade root spacer for mounting a gas turbine engine fan blade at a root portion thereof to a hub therefore, said blade root spacer comprising a radially bowed, elongate leaf spring comprising first and second major surfaces adapted to bear against a radially innermost surface of said fan blade root and an opposed radially innermost surface of a mounting slot in an associated fan blade hub, said leaf spring comprising a pair of inner and outer longitudinally extending major surfaces and a pair of generally parallel opposed lateral side edges.
A mounting arrangement for a gas turbine engine blade having a radially directed axis and a radially inner root received within a slot in an associated blade hub, said mounting arrangement including an elongate resilient leaf spring spacer comprising radially inner and outer major surfaces that extend between opposed lateral side edges, wherein said spacer is received within said slot between a radially innermost end of said blade root and a radially innermost surface of said slot by interference fit therebetween such that said radially outer major surface of said spacer exerts a radially outward force on said blade root to reduce radial movement of said blade root within said slot.
Dependencies are inferred from the claim text.