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US 10,473,030 B2Granted
Acoustic panel of turbine engine
AssigneeROLLS-ROYCE plc
InventorsRobert W. Heeter, Jonathan Rivers, Dennes Kyle Burney
Life of this patent
Estimating the term…
Abstract
An aircraft engine includes a rotating structure and a casing circumferentially surrounding the rotating structure. The aircraft engine further includes an acoustic panel for noise reduction circumferentially surrounding the rotating structure. The acoustic panel is disposed proximal the casing. Furthermore, the acoustic panel includes a plurality of acoustic panel members. In addition, the acoustic panel is secured to the casing by at least one securement mechanism such that the acoustic panel is substantially circumferentially fixed relative to the casing.
Claims17
An aircraft engine, comprising:
- a rotating structure;
- a casing circumferentially surrounding the rotating structure;
- and
- an acoustic panel for noise reduction circumferentially surrounding the rotating structure and disposed proximal the casing, where the casing forms a forward axially extending protrusion towards an aft side of the acoustic panel, the acoustic panel comprising a plurality of acoustic panel members each acoustic panel member comprising a forward rail, an aft rail having an aft protrusion extending from the aft rail above the protrusion of the casing, and acoustic material disposed there between, wherein each acoustic panel member is secured to the casing by at least one securement mechanism accessible from a radially inward side of the casing on an aft side of the acoustic panel, the securement mechanism comprising a removable fastener positioned radially from below the protrusion in the casing into an aperture in the aft protrusion of the acoustic panel member and extending into an aperture in the aft protrusion of the aft rail, the plurality of acoustic panel members disposed adjacent to one another such that the acoustic panel is substantially circumferentially fixed relative to the casing and each acoustic panel member is fully detachable from the casing by removal of the removable fastener.
1 more element
A turbine engine, comprising:
- a fan;
- a fan casing circumferentially surrounding the fan;
- an acoustic panel for noise reduction circumferentially surrounding the fan, the acoustic panel comprising a plurality of acoustic panel members arranged adjacent to one another to form a substantially complete ring of the acoustic panel, wherein a first acoustic panel member of the plurality of acoustic panel members is adjacent to a second acoustic panel member of the plurality of acoustic panel members and wherein the first acoustic panel member is removably secured to the second acoustic panel member by a releasable fastening assembly fastened to a forward side of each acoustic panel member;
- and
- a securement mechanism comprising a bracket affixed to the casing and affixed to a forward side of the forward rail of each acoustic panel member, where the securement mechanism is accessible from the forward side of the acoustic panel member and is configured to secure the acoustic panel to the fan casing such that the acoustic panel is substantially circumferentially fixed relative to the fan casing.
2 more elements
An aircraft engine, comprising:
- a rotating structure disposed proximal a forward end of the aircraft engine;
- a composite casing circumferentially surrounding the rotating structure;
- a securement ring circumferentially surrounding the rotating structure and fastened to the composite casing;
- and
- an acoustic panel comprising a plurality of acoustic panel members arranged adjacent to one another to form a substantially complete ring of the acoustic panel surrounding the rotating structure and disposed radially inside the composite casing, wherein each acoustic panel member is secured to the securement ring by a securement mechanism such that the acoustic panel is substantially circumferentially fixed relative to the composite casing, where the securement mechanism on each acoustic panel member is accessible at a forward end of the acoustic panel members for removal of the acoustic panel members.
2 more elements
Dependencies are inferred from the claim text.