System, apparatus, and method for thrust vectoring

Patent metadata

Field	Value
Publication number	US-9163583-B2
Application number	US-201313875193-A
Country	US
Kind code	B2
Filing date	May 1, 2013
Priority date	May 1, 2013
Publication date	Oct 20, 2015
Grant date	Oct 20, 2015

Abstract

The thrust vectoring systems described herein create variable reverse thrust during a landing event. The reverse thrust may be varied based on manual inputs, dynamically changing operating events, or a landing duty cycle. The thrust vectoring systems comprise a movable shelf that is capable of adjusting a directing a fluid flow to create a variable reverse thrust which may reduce the risk of foreign object ingestion M the engine at lower ground speeds.

First claim

What is claimed is:

1. A thrust reverser system, comprising:
a translating sleeve configured to expose a flow path in response to the thrust reverser system being activated;
a movable shelf comprising a body having a length in a longitudinal direction, the body disposed between a forward edge and an aft edge,
wherein the body is configured to divert a flow through the flow path to the forward edge and the aft edge,
wherein the forward edge at least partially defines a first reverse port located forward of the movable shelf, and
wherein the aft edge at least partially defines a second reverse port located aft of the movable shelf and forward of the translating sleeve;

a track configured to position the body in a transverse orientation relative to the flow path and carry and translate the movable shelf; and
a bucket door configured to inhibit airflow through a fan air duct, the bucket door being capable of directing the airflow to interact with the movable shelf.

2. The thrust reverser system of claim 1 , wherein the movable shelf is configured to create the first thrust reverse port and the second thrust reverse port through a nacelle.

3. The thrust reverser system of claim 2 , wherein the first thrust reverse port has a first flow area in response to a first condition.

4. The thrust reverser system of claim 3 , wherein the first thrust reverse port has a second flow area in response to a second condition.

5. The thrust reverser system of claim 3 , wherein the first condition is a touch down condition.

6. The thrust reverser system of claim 4 , wherein the second condition is a maximum thrust reverse condition.

7. The thrust reverser system of claim 1 , wherein the movable shelf is capable of closing a portion of a nacelle in a stowed condition.

8. The thrust reverser system of claim 1 , wherein the track is capable of translating the movable shelf to a first position, a second position, and a third position.

9. A nacelle, comprising:
a fan air duct;
a translating sleeve configured to translate from a stowed position to a deployed position to define a flow path for a thrust reverser;
a movable shelf comprising a body having a length in a longitudinal direction, the body disposed between a forward edge and an aft edge,
wherein the body is configured to divert a flow through the flow path to the forward edge and the aft edge,
wherein the forward edge at least partially defines a first reverse port located forward of the movable shelf, and
wherein the aft edge at least partially defines a second reverse port located aft of the movable shelf and forward of the translating sleeve,
wherein the movable shelf is configured to seal a portion of the fan air duct in a first position;

a track configured to position the shelf transverse to the flow path and carry and shift the movable shelf from the first position to a second position;
a bucket door configured to direct an airflow to the moveable shelf in response to the moveable shelf being in a second position; and
a blade configured to direct the airflow that passes by the movable shelf.

10. The nacelle of claim 9 , wherein the bucket door inhibits airflow between an inlet of the fan air duct and an outlet of the fan air duct.

11. The nacelle of claim 9 , wherein the first condition is a landing event.

12. The nacelle of claim 9 , wherein the track is further configured to shift the movable shelf to at least one of a third position or a fourth position.

13. The nacelle of claim 9 , wherein the second position creates a first amount of thrust reverse.

14. The nacelle of claim 12 , wherein the third condition creates a second amount of thrust reverse.

15. The nacelle of claim 9 , wherein the blade has a curved profile.

16. The nacelle of claim 15 , wherein the blade is capable of directing air in a first direction.

17. A method for providing thrust reverse to an aircraft comprising:
activating an aircraft thrust reverser system comprising a translating sleeve, a movable shelf, a track and a bucket door;
moving the translating sleeve configured to expose a flow path in response to the thrust reverser system being activated, in response to a landing event;
moving the bucket door from a first position to a second position to inhibit airflow in a fan air duct, the bucket door being capable of directing the airflow to interact with the movable shelf;
moving a body of the movable shelf along the track from a stowed position to the first position to generate a first thrust reverse, the body having a length in the longitudinal direction, the body disposed between a forward edge and an aft edge,
wherein the body is configured to divert a flow through the flow path to the forward edge and the aft edge,
wherein the forward edge at least partially defines a first reverse port located forward of the movable shelf,
wherein the aft edge at least partially defines a second reverse port located aft of the movable shelf and forward of the translating sleeve,
wherein the track is configured to position the body in a transverse orientation relative to the flow path and carry and translate the movable shelf;

moving the movable shelf along the track from the first position to the second position to generate a second thrust reverse in response to a first event; and
moving the movable shelf along the track from the second position to a third position to generate a third thrust reverse in response to a second event.

18. The method of claim 17 , wherein the activating may be automatic or a response to a manual command.

19. The method of claim 17 , wherein the first event is at least one of a predetermined event and a dynamically determined event.

20. The method of claim 17 , wherein the second event is at least one of a time and a measured ground speed of an aircraft during landing.

Assignees

• Rohr Inc

Inventors

• James Norman J

Classifications

• F02K1/70 Primary

  using thrust reverser flaps or doors mounted on the fan housing · CPC title

• Y02T50/671

  Cross-Sectional Technologies · mapped topic

• F02K1/763

  with actuating systems or actuating devices; Arrangement of actuators for thrust reversers · CPC title

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title

• B64D33/04

  of exhaust outlets or jet pipes · CPC title