Method of manufacturing septum cap

Patent metadata

Field	Value
Publication number	US-9505200-B2
Application number	US-201414251346-A
Country	US
Kind code	B2
Filing date	Apr 11, 2014
Priority date	Apr 11, 2014
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A method of manufacturing an acoustic structure is disclosed. An adhesive material and a septum forming material may be deposited on a first honeycomb ribbon. A second honeycomb ribbon may be adhered to the adhesive material and the septum forming material. The first honeycomb ribbon and the second honeycomb ribbon may be expanded to form a honeycomb structure. The septum forming material may stretch or expand to form a septum cap in a cell of the honeycomb structure. The septum forming material may be inherently porous, and/or the septum cap may be cured in order to introduce pores into the septum cap.

First claim

What is claimed is:

1. A method of manufacturing an acoustic structure comprising:
applying an adhesive to a first honeycomb ribbon;
applying a septum forming material to the first honeycomb ribbon;
adhering a second honeycomb ribbon to the adhesive and the septum forming material;
expanding the first honeycomb ribbon and the second honeycomb ribbon into a honeycomb structure; and
creating pores in the septum forming material during the expanding.

2. The method of claim 1 , wherein the expanding causes the septum forming material to form a septum cap within a cell of the honeycomb structure.

3. The method of claim 2 , further comprising curing the septum cap.

4. The method of claim 1 , wherein the septum forming material comprises an inherently porous material.

5. The method of claim 1 , wherein the septum forming material comprises nanomaterials.

6. The method of claim 1 , further comprising compressing the septum forming material between the first honeycomb ribbon and the second honeycomb ribbon prior to the expanding.

7. The method of claim 1 , further comprising applying a top sheet and a back skin to the honeycomb structure.

8. The method of claim 1 , wherein the septum forming material forms a plurality of septum caps within a cell of the honeycomb structure.

9. The method of claim 1 , wherein the septum forming material adheres to the first honeycomb ribbon and the second honeycomb ribbon during the expanding to form a septum cap.

10. A method of manufacturing an acoustic septum comprising:
adhering a first substrate to a second substrate with a septum forming material;
separating the first substrate from the second substrate; and
introducing pores to the septum forming material;
wherein the septum forming material stretches to form an acoustic septum cap between the first substrate and the second substrate.

11. The method of claim 10 , further comprising curing the septum forming material.

12. The method of claim 10 , further comprising adhering the first substrate to the second substrate with an adhesive material.

13. The method of claim 12 , wherein the separating the first substrate from the second substrate forms honeycomb cells between the first substrate and the second substrate.

Assignees

• Rohr Inc

Inventors

• Braden Robert L
• Winfield Ian F

Classifications

• Y10T156/1003

  by separating laminae between spaced secured areas [e.g., honeycomb expanding] · CPC title

• B32B2307/102

  Insulating · CPC title

• B32B2605/18

  Aircraft · CPC title

• B32B37/18

  involving the assembly of discrete sheets or panels only · CPC title

• B32B37/146 Primary

  whereby one or more of the layers is a honeycomb structure · CPC title