Tandem thrust reverser with multi-point actuation

Patent metadata

Field	Value
Publication number	US-9695778-B2
Application number	US-201414184398-A
Country	US
Kind code	B2
Filing date	Feb 19, 2014
Priority date	Feb 22, 2013
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

One embodiment includes a pivot thrust reverser comprising a first tandem pivot door subassembly comprising an inner panel and outer panel connected. A second tandem pivot door subassembly is included comprising an inner panel and outer panel connected. Also included are a first actuator located on a first side of an attachment location to pivot the first tandem pivot door subassembly, a second actuator located on a second side of the attachment location to pivot the second tandem pivot door subassembly, and a third actuator located substantially radially opposite the attachment location to pivot both the first tandem pivot door subassembly and the second tandem pivot door subassembly. The first tandem pivot door is configured to be pivoted from stowed to deployed by the first actuator and the third actuator, and the second tandem pivot door is configured to be pivoted from stowed to deployed by the second actuator and the third actuator.

First claim

The invention claimed is:

1. A pivot thrust reverser for use in a gas turbine engine assembly, the pivot thrust reverser comprising:
a first tandem pivot door subassembly comprising an inner panel and an outer panel, wherein the inner panel and the outer panel are connected;
a second tandem pivot door subassembly comprising an inner panel and an outer panel, wherein the inner panel and the outer panel are connected;
a first actuator located on a first side of an attachment location to pivot the first tandem pivot door subassembly;
a second actuator located on a second side of the attachment location to pivot the second tandem pivot door subassembly; and
a third actuator located substantially radially opposite the attachment location to pivot both the first tandem pivot door subassembly and the second tandem pivot door subassembly, wherein the first tandem pivot door is configured to be pivoted from a stowed position to a deployed position by both the first actuator and the third actuator, and wherein the second tandem pivot door is configured to be pivoted from the stowed position to the deployed position by both the second actuator and the third actuator.

2. The pivot thrust reverser of claim 1 , wherein the first actuator, the second actuator and the third actuator are all located between a surface of a bypass duct and an outer surface of a nacelle.

3. The pivot thrust reverser of claim 1 , wherein the first tandem pivot door and the second tandem pivot door each form both a portion of the surface of the bypass duct and a portion of the outer surface of the nacelle when in the stowed position.

4. The pivot thrust reverser of claim 1 , wherein in the deployed position the first tandem pivot door subassembly and the second tandem pivot door subassembly circumferentially surround an inner surface of a bypass duct such that when the pivot thrust reverser is deployed during engine operation a fan bypass stream is redirected while both a core stream and a nacelle ventilation stream flow in the same manner as when the pivot thrust reverser is stowed.

5. The pivot thrust reverser of claim 1 , wherein the inner panel and the outer panel of the first tandem pivot door subassembly are configured to rotate simultaneously about different pivot axises, and wherein the inner panel and the outer panel of the second tandem pivot door subassembly are configured to rotate simultaneously about different pivot axises.

6. The pivot thrust reverser of claim 5 , wherein the first actuator, the second actuator and the third actuator are configured to pivot both the first tandem pivot door subassembly and the second tandem pivot door subassembly from the stowed position to the deployed position on respective pivot axises that are each positionally fixed relative to the gas turbine engine assembly.

7. The pivot thrust reverser of claim 6 , wherein the pivot point of the inner panel of the first tandem pivot door subassembly is located on a linkage operatively connected between an actuator and the inner panel of the first tandem pivot door subassembly, and wherein the pivot point of the outer panel of the first tandem pivot door subassembly is located at or near a perimeter of the outer panel of the first tandem pivot door subassembly.

8. The pivot thrust reverser of claim 1 , wherein the second tandem pivot door is spaced approximately 180° from the first tandem pivot door relative to an axis of the gas turbine engine.

9. The pivot thrust reverser of claim 1 , wherein the second actuator is circumferentially spaced from the first actuator.

10. The pivot thrust reverser of claim 1 , wherein the first tandem pivot door inner panel and outer panel are connected by a first sliding rail, and wherein the second tandem pivot door inner panel and outer panel are connected by a second sliding rail.

11. The pivot thrust reverser of claim 10 , wherein the inner panel and the outer panel of the first tandem pivot door subassembly are connected by a third sliding rail.

12. The pivot thrust reverser of claim 1 , wherein the first tandem pivot door inner panel and outer panel are connected by a multi-bar linkage.

Assignees

• United Technologies Corp

Inventors

• Suciu Gabriel L
• Chandler Jesse M

Classifications

• Y10T29/49229

  Prime mover or fluid pump making · CPC title

• B23P19/04

  for assembling or disassembling parts · CPC title

• F02K1/64

  Reversing fan flow · CPC title

• B64D29/00

  Power-plant nacelles, fairings or cowlings · CPC title

• F02K1/605 Primary

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