TRANSLATING NOZZLE FOR MIXED FLOW TURBOFAN ENGINE

• US 20190162136A1
• Filed: 11/27/2017
• Published: 05/30/2019
• Est. Priority Date: 11/27/2017
• Status: Active Grant

• Current Assignee: ROHR Incorporated (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: ROHR Incorporated (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: LACKO, ANTHONY
• Granted Patent: US 10,641,208 B2
• Time in Patent Office: Days
• CPC Class Codes: F02K 1/60 by blocking the rearward discharge by means of pivoted eyelids or clamshells, e.g. target-type reversers
• CPC Class Codes: F02K 1/605 the aft end of the engine cowling being movable to uncover openings for the reversed flow
• CPC Class Codes: F02K 1/70 using thrust reverser flaps or doors mounted on the fan housing
• CPC Class Codes: F02K 1/763 with actuating systems or actuating devices; Arrangement of actuators for thrust reversers
• CPC Class Codes: F02K 3/06 with front fan
• CPC Class Codes: F05D 2220/323 for aircraft propulsion, e.g. jet engines

Abstract

A thrust reverser for a gas turbine engine includes a reverser door pivotally mounted to a frame, an exhaust duct translationally mounted to the frame and an actuator having an actuator rod connected to the reverser door and to the exhaust duct.

Claims

1. A thrust reverser, comprising:

a reverser door pivotally mounted to a frame;

an exhaust duct translationally mounted to the frame and

an actuator having an actuator rod connected to the reverser door and to the exhaust duct.

2. The thrust reverser of claim 1, further comprising a door link connecting the reverser door to the actuator rod.

3. The thrust reverser of claim 2, further comprising a translating member connecting the exhaust duct to the actuator rod.

4. The thrust reverser of claim 3, further comprising a first support member mounted to the frame and wherein the translating member is configured to translate linearly with respect to the first support member.

5. The thrust reverser of claim 4, further comprising a beam link connecting the translating member to the actuator rod.

6. The thrust reverser of claim 5, wherein the translating member comprises a first beam configured to translate linearly with respect to the first support member.

7. The thrust reverser of claim 6, wherein the translating member comprises a second beam spaced apart from the first beam and wherein the first beam and the second beam are connected by one or more rung members.

8. The thrust reverser of claim 6, further comprising a bearing system positioned between the first beam and the first support member.

9. The thrust reverser of claim 4, wherein the actuator further comprises a base connected to the frame and wherein the actuator rod is configured to translate linearly with respect to the base.

10. The thrust reverser of claim 5, wherein the frame comprises a first side beam and wherein the reverser door is pivotally mounted to the first side beam and the exhaust duct is translationally mounted to the first side beam.

11. The thrust reverser of claim 10, wherein the frame comprises a second side beam and wherein the reverser door is pivotally mounted to both the first side beam and the second side beam.

12. The thrust reverser of claim 11, further comprising a second actuator having a second actuator rod connected to the reverser door and to the exhaust duct.

13. The thrust reverser of claim 12, further comprising a second door link connecting the reverser door to the second actuator rod, a second translating member connecting the exhaust duct to the second actuator rod and a second beam link connecting the second translating member to the second actuator rod.

14. A thrust reverser for a turbofan engine, comprising:

an upper reverser door pivotally mounted to a frame and a lower reverser door pivotally mounted to the frame;

an exhaust duct translationally mounted to the frame;

a first actuator having a first actuator rod connected to the upper reverser door, the lower reverser door and the exhaust duct and

a second actuator having a second actuator rod connected to the upper reverser door, the lower reverser door and the exhaust duct.

15. The thrust reverser of claim 14, further comprising a first upper door link connecting the upper reverser door to the first actuator rod and a second upper door link connecting the upper reverser door to the second actuator rod.

16. The thrust reverser of claim 15, further comprising a first lower door link connecting the lower reverser door to the first actuator rod and a second lower door link connecting the lower reverser door to the second actuator rod.

17. The thrust reverser of claim 16, further comprising a first translating member connecting the exhaust duct to the first actuator rod and a second translating member connecting the exhaust duct to the second actuator rod.

18. The thrust reverser of claim 17, further comprising a first beam link connecting the first translating member to the first actuator rod and a second beam link connecting the second translating member to the second actuator rod.

19. A gas turbine engine, comprising

a core engine;

a nacelle surrounding the core engine;

a fan operably connected to the core engine and configured to drive air along a flow path in a bypass duct between the nacelle and an outer casing of the core engine;

a mixing section where exhaust from the core engine is mixed with air in the flow path as the air exits the flow path and

a thrust reverser downstream of the mixing section, wherein the thrust reverser comprises

an upper reverser door pivotally mounted to a frame and a lower reverser door pivotally mounted to the frame,

an exhaust duct translationally mounted to the frame,

a first actuator having a first actuator rod connected to the upper reverser door, the lower reverser door and the exhaust duct and

a second actuator having a second actuator rod connected to the upper reverser door, the lower reverser door and the exhaust duct.

20. The gas turbine engine of claim 19, wherein the thrust reverser further comprises

a first upper door link connecting the upper reverser door to the first actuator rod and a second upper door link connecting the upper reverser door to the second actuator rod,

a first lower door link connecting the lower reverser door to the first actuator rod and a second lower door link connecting the lower reverser door to the second actuator rod,

a first translating member connecting the exhaust duct to the first actuator rod and

a second translating member connecting the exhaust duct to the second actuator rod.