Noise abatement for aircraft components and systems in aircraft bays

Patent metadata

Field	Value
Publication number	US-9394685-B2
Application number	US-201414462226-A
Country	US
Kind code	B2
Filing date	Aug 18, 2014
Priority date	Aug 18, 2014
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

An acoustic absorption material may comprise an outer layer and a first layer of batting material proximate to the outer layer. A first layer of room temperature vulcanized silicone (RTV) may be proximate to the batting material. A second layer of batting material may be proximate to the first layer of RTV opposite the first layer of batting material.

First claim

What is claimed is:

1. An acoustic absorption material, comprising:
an outer layer comprising a silicone-coated glass cloth;
a first layer of batting material proximate to and contacting the outer layer; and
a first layer of room temperature vulcanized silicone (RTV) proximate to and contacting the first layer of batting material, wherein the outer layer, the first layer of batting material, and the first layer of RTV form an acoustic blanket having a circular shape and configured for attachment to a pump.

2. The acoustic absorption material of claim 1 , further including a second layer of batting material proximate to the first layer of RTV and opposite the first layer of batting material with the first layer of RTV disposed between the first layer of batting material and the second layer of batting material.

3. The acoustic absorption material of claim 2 , further including:
a second layer of RTV proximate to the second layer of batting material and opposite the first layer of RTV; and
a third layer of batting material proximate to the second layer of RTV and opposite the second layer of batting material.

4. The acoustic absorption material of claim 1 , further including:
a fibrous glass layer proximate the first layer of RTV and opposite the first layer of batting material; and
a silicone layer proximate to the fibrous glass layer and opposite the first layer of RTV.

5. The acoustic absorption material of claim 1 , wherein the first layer of batting material comprises an aramid fiber.

6. The acoustic absorption material of claim 1 , wherein the first layer of batting material is coated in RTV.

7. An acoustic blanket, comprising:
a pad, comprising:
an outer layer,
a first layer of batting material proximate to the outer layer, and
a first layer of silicone proximate to the first layer of batting material;

a side pad coupled to the pad, wherein the pad comprises a greater thickness than the side pad, and wherein the pad comprises a greater height than the side pad;
a strap around the pad and the side pad and configured to attach the acoustic blanket to a pump.

8. The acoustic blanket of claim 7 , wherein the pad further comprises a second layer of batting material proximate to the first layer of silicone and opposite the first layer of batting material.

9. The acoustic blanket of claim 8 , wherein the pad further comprises:
a second layer of silicone proximate to the second layer of batting material and opposite the first layer of silicone; and
a third layer of batting material proximate to the second layer of silicone and opposite the second layer of batting material.

10. The acoustic blanket of claim 7 , wherein the first layer of silicone comprises a room temperature vulcanized silicone rubber (RTV).

11. The acoustic blanket of claim 7 , wherein the strap comprises a hook and loop fastener.

12. The acoustic blanket of claim 7 , wherein the first layer of batting material comprises an aramid fiber.

13. The acoustic blanket of claim 7 , wherein the outer layer comprises a silicone-coated glass cloth.

14. The acoustic blanket of claim 7 , wherein the first layer of batting material is coated in RTV.

Assignees

• Hamilton Sunstrand Corp
• Hamilton Sundstrand Corp

Inventors

• Dollhopf David J
• Kasner Alan
• Woll Suzanne L B

Classifications

• G10K11/168 Primary

  Plural layers of different materials, e.g. sandwiches · CPC title

• B64F1/26

  for reducing engine or jet noise; Protecting airports from jet erosion · CPC title

• E04B1/84 Primary

  Sound-absorbing elements · CPC title