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US 10,480,321 B2Granted
Attachment of piloting feature
AssigneeROLLS-ROYCE plc
InventorsPatrick E. Bailey, Samuel J. Lacombe, Eric W. Engebretsen, Rodney D. Conrad, Matthew J. Kappes
Life of this patent
Estimating the term…
Abstract
A fan assembly for use in a gas turbine engine of an aircraft includes a fan disk having a number of fan blades and a windage shield coupled to the fan disk to move therewith. The fan assembly supplies air for use in the engine. The windage shield rotates with the fan disk during operation of the gas turbine engine and directs air supplied by the fan blade.
Claims16
A gas turbine engine comprising
- a first component formed to include a first anchor-receiving space therein, the first anchor-receiving space being arranged to extend along an installation axis through a portion of the first component,
- a second component coupled to the first component to move therewith, the second component being formed to include a second anchor-receiving space therein, and the second anchor-receiving space is arranged to extend along the installation axis through the second component and be aligned with the first anchor-receiving space, and
- an anchor arranged to interconnect and couple the first component to the second component in continuous compressive engagement with each other, the anchor including a bushing located in the second anchor-receiving space and arranged to extend out of the second anchor-receiving space toward the first component to engage the first component, a washer positioned to engage the bushing along the installation axis to locate the second anchor-receiving space between the washer and the first component, a fastener arranged to extend through a fastener-receiving aperture formed in the washer, through a fastener-receiving space formed in the bushing, and through the first anchor-receiving space, and a fastener retainer coupled to the fastener to block movement of the fastener relative to the first and second components while locating the second component and the bushing between the fastener retainer and the washer, wherein the washer is in continuous engagement with the second component,
- wherein the anchor is configured to minimize stress formed in the fastener during operation of the gas turbine engine as a result of the first component having a different thermal or mechanical expansion rate than the second component.
1 more element
A gas turbine engine comprising
- a fan disk arranged to hold a plurality of fan blades for rotation about a central axis of the gas turbine engine, the fan disk formed to include a first anchor-receiving space therein arranged to extend along an installation axis through a portion of the fan disk,
- a windage shield arranged to guide incoming air provided by the fan blades through the gas turbine engine, the windage shield coupled to the fan disk to move therewith and being formed to include a second anchor-receiving space therein, the second anchor-receiving space being arranged to extend along the installation axis through the windage shield and be aligned with the first anchor-receiving space, and
- an anchor arranged to interconnect and couple the windage shield to the fan disk in continuous compressive engagement with each other, the anchor including a bushing having a sleeve located in the second anchor-receiving space and a flange coupled to the sleeve arranged to extend out of the second anchor- space toward the fan disk to engage the fan disk, a washer positioned to engage the bushing along the installation axis to locate the second anchor-receiving space between the washer and the fan disk, a fastener arranged to extend through a fastener-receiving aperture formed in the washer, through a fastener-receiving space formed in the bushing, and through the first anchor-receiving space, and a fastener retainer coupled to the fastener to block movement of the fastener relative to the fan disk and windage shield while locating the windage shield and the bushing between the fastener retainer and the washer, wherein the washer is in continuous compressive engagement with the windage shield,
- wherein a length of the bushing is longer than a length of the second anchor-receiving space and a diameter of the sleeve is smaller than a diameter of the second anchor-receiving space such that the second anchor-receiving space is spaced apart from the fan disk and the sleeve is spaced apart from an inner surface of the second anchor-receiving space to allow the windage shield to expand and contract relative to the fan disk while minimizing stresses in the fastener during operation of the gas turbine engine.
1 more element
Dependencies are inferred from the claim text.