3D printed acoustic panel with lattice structure support layer
AssigneeROLLS-ROYCE plc
InventorsBenedict N. Hodgson, Jeff Higbie
Life of this patent
Estimating the term…
Abstract
In some examples, acoustic panels (such as for gas turbine engines) and techniques for forming acoustic panels. In some examples, the acoustic panel including a coversheet including an outer face, an inner face, and a plurality of apertures extend from the outer face to the inner face. The acoustic panel also includes a 3D-printed support layer including a lattice structure formed at least partially of a polymer, the lattice structure defining a plurality of cells of the support layer, wherein a first side of the support layer is coincident with the inner face of the coversheet.
Claims20
An acoustic panel comprising:
- a coversheet comprising:
- an outer face;
- an inner face;
- and
- a plurality of apertures extending from the outer face to the inner face;
- and
- a 3D-printed support layer comprising:
- a lattice structure formed at least partially of a polymer, the lattice structure defining a plurality of cells of the support layer, wherein a first side of the support layer is coincident with the inner face of the coversheet, and wherein the support layer is configured to elastically deform in response to a force acting upon the outer face of the coversheet.
A method of manufacturing an acoustic panel, the method comprising:
- 3D printing a support layer on an inner face of a coversheet, wherein the coversheet comprises the inner face, an outer face, and a plurality of apertures extending from the outer face to the inner face, wherein the support layer comprises a lattice structure formed at least partially of a polymer, the lattice structure defining a plurality of cells of the support layer, and wherein a first end of the support layer is attached to the inner face of the coversheet, and wherein the support layer is configured to elastically deform in response to a force acting upon the outer face of the coversheet.
An acoustic panel comprising:
- a coversheet comprising:
- an outer face;
- an inner face;
- and
- a plurality of apertures extending from the outer face to the inner face;
- and
- a 3D-printed support layer comprising:
- a lattice structure formed at least partially of a polymer, the lattice structure defining a plurality of cells of the support layer, wherein a first side of the support layer is coincident with the inner face of the coversheet, and wherein at least some of the plurality of cells are arranged in a first lattice layer and a second lattice layer, wherein a proximal face of the first lattice layer is coincident with the inner face of the coversheet, and wherein a proximal face of the second lattice layer is connected to a distal face of the first lattice layer.
Dependencies are inferred from the claim text.