Plastic core blocker door

Patent metadata

Field	Value
Publication number	US-9845769-B2
Application number	US-201514704889-A
Country	US
Kind code	B2
Filing date	May 5, 2015
Priority date	May 5, 2015
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

Disclosed herein is a blocker door for use in a thrust reverser portion of a nacelle. The blocker door includes a structural frame having a plurality of connected and crossing ribs. The blocker door also includes a front sheet positioned on an airflow side of and attached to the structural frame. The blocker door also includes at least one acoustic core positioned between the ribs of the structural frame and comprising a plastic material.

First claim

What is claimed is:

1. A blocker door for use in a thrust reverser portion of a nacelle, the blocker door comprising:
a structural frame having a plurality of connected and crossing ribs;
a front sheet positioned on an airflow side of and attached to the structural frame via rivets; and
at least one acoustic core positioned between the ribs of the structural frame, coupled to the structural frame via fasteners, and formed from a plastic material.

2. The blocker door of claim 1 , wherein the at least one acoustic core is formed by injection molding.

3. The blocker door of claim 1 , further comprising a backskin coupled to a non-airflow side of the at least one acoustic core, the backskin mechanically attached to the structural frame.

4. The blocker door of claim 1 , wherein the structural frame defines at least one integral hinge lug.

5. The blocker door of claim 1 , wherein the structural frame defines an integral drag link housing.

6. The blocker door of claim 1 , wherein the structural frame is coupled to the front sheet via fasteners.

7. The blocker door of claim 1 , wherein the structural frame is formed from a cast metal.

8. The blocker door of claim 1 , wherein the front sheet defines a plurality of perforations that are punched into the front sheet.

9. A blocker door for use in a thrust reverser portion of a nacelle, the blocker door comprising:
a structural frame defining at least one hinge lug and a drag link housing and having a plurality of connected and crossing ribs;
a front sheet coupled to the structural frame via rivets; and
at least one acoustic core formed using a plastic material, positioned between the ribs of the structural frame, and coupled to the structural frame via fasteners.

10. The blocker door of claim 9 , wherein the at least one acoustic core comprises at least one of a thermoplastic or a thermoset.

11. The blocker door of claim 9 , wherein the structural frame comprises aluminum or an aluminum alloy.

12. The blocker door of claim 9 , wherein the structural frame is formed from a cast metal.

13. The blocker door of claim 9 , wherein the at least one acoustic core is formed using injection molding.

14. The blocker door of claim 9 , further comprising a backskin coupled to the at least one acoustic core.

15. A blocker door for use in a thrust reverser portion of a nacelle, the blocker door comprising:
a structural frame defining at least one hinge lug and a drag link housing and having a plurality of connected and crossing ribs;
a front sheet coupled to the structural frame using rivets; and
at least one acoustic core positioned between the ribs of the structural frame and coupled to the structural frame using fasteners.

16. The blocker door of claim 15 , wherein the at least one acoustic core comprises at least one of a thermoplastic or a thermoset.

17. The blocker door of claim 15 , wherein the structural frame comprises aluminum or an aluminum alloy.

18. The blocker door of claim 15 , wherein the structural frame is formed from a cast metal.

19. The blocker door of claim 15 , wherein the at least one acoustic core is formed using injection molding.

Assignees

• Rohr Inc

Inventors

• Hercock Henry

Classifications

• F05D2260/96

  Preventing, counteracting or reducing vibration or noise · CPC title

• F02K1/625 Primary

  the aft end of the engine cowling being movable to uncover openings for the reversed flow · CPC title

• Y02T50/672

  Cross-Sectional Technologies · mapped topic

• F05D2300/43

  Synthetic polymers, e.g. plastics; Rubber · 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