Acoustic panel for thrust reversers

Patent metadata

Field	Value
Publication number	US-11047308-B2
Application number	US-201816023512-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Jun 29, 2018
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

An acoustic panel includes a base, a cantilevered portion, a gap, and a support member. The base has a surface defining a plurality of cavities configured to attenuate noise from an engine. The cantilevered portion extends from the base and is configured to be removably coupled with a portion of a transcowl. The gap is defined by the base and the cantilevered portion. The support member is coupled to the cantilevered portion and the base, and the supporting member is configured to support the cantilevered portion.

First claim

What is claimed is:

1. An acoustic panel comprising:
a base having a surface defining a plurality of cavities configured to attenuate noise from an engine, wherein the base includes a first side;
a cantilevered portion extending from the base and configured to be removably coupled with a portion of a transcowl, wherein the cantilevered portion includes a second side, and wherein the first side faces the second side;
a gap defined by the first side and the second side; and
a support member that fills a portion of the gap, the support member configured to support the cantilevered portion, wherein the support member is coupled to the base via a first cured adhesive layer, and wherein the support member is coupled to the cantilevered portion via a second cured adhesive layer.

2. The acoustic panel of claim 1 , wherein a second portion of the gap is not filled by the support member.

3. The acoustic panel of claim 1 , further comprising one or more fasteners extending through the cantilevered portion and the portion of the transcowl to couple the cantilevered portion to the portion of the transcowl.

4. The acoustic panel of claim 1 , wherein the plurality of cavities have a hexagonal shape.

5. The acoustic panel of claim 1 , further comprising a layer of composite material coupled to at least a portion of the base, wherein a portion of the layer of composite material is coupled to a portion of the cantilevered portion, and wherein the layer of composite material is positioned between the base and the cantilevered portion.

6. The acoustic panel of claim 5 , further comprising a second layer of composite material coupled to the cantilevered portion, the support member, and the layer of composite material.

7. The acoustic panel of claim 6 , further comprising an additional adhesive coupling the second layer of composite material to each of the cantilevered portion, the support member, and the layer of composite material.

8. The acoustic panel of claim 1 , wherein the base and the cantilevered portion form an aerodynamic surface.

9. The acoustic panel of claim 1 , wherein the cantilevered portion has a joggled portion to receive the portion of the transcowl.

10. The acoustic panel of claim 1 , wherein cantilevered portion is tapered such that a distal end of the cantilevered portion is thicker than a proximal end of the cantilevered portion, and wherein the distal end of the cantilevered portion is further from the base than the proximal end.

11. The acoustic panel of claim 1 , further comprising a second layer of composite material, wherein the second layer of composite material is coupled to the cantilevered portion via the support member.

12. The acoustic panel of claim 1 , wherein the support member comprises a molded insert, and wherein the cantilevered portion has a substantially constant thickness.

13. The acoustic panel of claim 12 , wherein the molded insert comprises a thermoplastic or thermoset polymer material.

14. A vehicle comprising:
an engine;
a cowl partially enclosing the engine; and
a thrust reverser assembly coupled to the cowl, the thrust reverser assembly including a transcowl and including an acoustic panel configured to attenuate noise from the engine, the acoustic panel including:
a base having a surface defining a plurality of cavities, wherein the base includes a first side;
a cantilevered portion extending from the base and configured to be removably coupled with a portion of the transcowl, wherein the cantilevered portion includes a second side, and wherein the first side faces the second side;
a gap defined by the first side and the second side; and
a support member coupled to the cantilevered portion and coupled to the base, the support member configured to support the cantilevered portion, wherein the support member fills a portion of the gap, wherein the support member is coupled to the base via a first cured adhesive layer, and wherein the support member is coupled to the cantilevered portion via a second cured adhesive layer.

15. The vehicle of claim 14 , wherein the engine is configured to generate thrust, and wherein the thrust reverser assembly is configured to redirect a portion of the thrust generated by the engine to generate second thrust that partially opposes the thrust.

16. The vehicle of claim 14 , wherein the cowl and the acoustic panel include aerodynamic surfaces, and wherein the vehicle is an aircraft, and wherein the engine and thrust reverser assembly are included in a nacelle of the aircraft.

17. A method of manufacturing an acoustic panel for an engine comprising:
applying a layer of composite material to a base, the base having a surface defining a plurality of cavities configured to attenuate noise from the engine, wherein the base includes a first side;
forming a support member on the first side;
applying a layup support material to the layer of composite material; and
forming a cantilevered portion extending from the base, wherein the layup support material is positioned between the first side of the base and a second side of the cantilevered portion, wherein, after forming the cantilevered portion, the layup support material is removed to establish a gap between the first side and the second side, wherein the cantilevered portion is configured to be coupled to and support a transcowl of the engine, and wherein a portion of a surface of the cantilevered portion comprises an aerodynamic surface to direct bypass exhaust of the engine when the transcowl is in a closed position, wherein the support member fills a portion of the gap after the cantilevered portion is formed, wherein the support member is coupled to the base via a first cured adhesive layer, and wherein the support member is coupled to the cantilevered portion via a second cured adhesive layer.

18. The method of claim 17 , wherein forming the cantilevered portion comprises:
applying a pre-cured composite component to the layer of composite material and the layup support material to form the cantilevered portion; and
curing the layer of composite material to fixedly couple the pre-cured composite component to the base as the first cured adhesive layer.

19. The method of claim 17 , wherein forming the cantilevered portion comprises:
applying a second composite material to the layer of composite material and the layup support material;
placing a caul plate on the second composite material; and
curing the layer of composite material and the second composite material to form the cantilevered portion as the second cured adhesive layer.

20. The method of claim 17 , further comprising forming one or more openings through the cantilevered portion, the one or more openings configured to accept fasteners that couple the cantilevered portion to the transcowl.

21. The method of claim 20 , further comprising fastening one or more nut plates to the cantilevered portion, the one or more nut plates in working relation to the one or more openings.

22. The method of claim 17 , wherein the layer of composite material is applied to a first surface of the base, and further comprising applying a second layer of composite material to a second surface of the base, wherein the first surface and the surface of the cantilevered portion correspond to the aerodynamic surface as a first aerodynamic surface and wherein the second surface is opposite the first surface and corresponds to a second aerodynamic surface.

Assignees

• Boeing Co

Inventors

• Curaudeau Alexandre D
• Riedel Brian L
• Brackett Ii Taurus L

Classifications

• F02K1/827 Primary

  Sound absorbing structures or liners · CPC title

• F02C7/24 Primary

  Heat or noise insulation (air intakes having provisions for noise suppression F02C7/045; turbine exhaust heads, chambers, or the like F01D25/30; silencing nozzles of jet-propulsion plants F02K1/00) · CPC title

• F05D2260/96

  Preventing, counteracting or reducing vibration or noise · CPC title

• F02K1/72

  the aft end of the fan housing being movable to uncover openings in the fan housing for the reversed flow · CPC title

• B64D29/00

  Power-plant nacelles, fairings or cowlings · CPC title