Thrust reverser tertiary lock

Patent metadata

Field	Value
Publication number	US-2017009705-A1
Application number	US-201514793429-A
Country	US
Kind code	A1
Filing date	Jul 7, 2015
Priority date	Jul 7, 2015
Publication date	Jan 12, 2017
Grant date	—

Abstract

A nacelle may include a tertiary lock for a thrust reverser. The tertiary lock may comprise a locking face which prevents the thrust reverser from accidentally deploying. An actuator may be coupled to a track beam. The actuator may contact a left tertiary lock and a right tertiary lock to disengage the locks. The locks may rotate and allow the thrust reverser to deploy. A spring may bias the locks to engage when the thrust reverser returns to the stowed position.

First claim

I claim:

1 . A tertiary lock assembly for a thrust reverser comprising:
a lock pivotable about a pin, the lock comprising a locking face and a stop; wherein, in response to a translating sleeve deploying in an aft direction with the lock in an engaged position, the translating sleeve is configured to apply a torque on the locking face in a first direction about the pin, and wherein the stop is configured to contact a mounting plate and prevent the lock from rotating in the first direction.

2 . The tertiary lock assembly of claim 1 , wherein the lock comprises a ramp.

3 . The tertiary lock assembly of claim 2 , wherein the lock is configured to rotate in a second direction opposite the first direction to a disengaged position in response to the translating sleeve contacting the ramp.

4 . The tertiary lock assembly of claim 1 , wherein the lock comprises a disengagement face.

5 . The tertiary lock assembly of claim 1 , further comprising a spring configured to bias the lock to an engaged position.

6 . The tertiary lock assembly of claim 4 , further comprising an actuator configured to contact the disengagement face.

7 . The tertiary lock assembly of claim 6 , wherein the actuator is configured to contact a plurality of locks to disengage the plurality of locks.

8 . The tertiary lock assembly of claim 6 , wherein the lock is configured to engage without contacting the actuator in response to the translating sleeve translating to a stowed position.

9 . A thrust reverser comprising:
a left track beam; a left translating sleeve coupled to the left track beam, wherein the left translating sleeve is configured to translate between a stowed position and a deployed position; a right track beam; a right translating sleeve coupled to the right track beam, wherein the right translating sleeve is configured to translate between a stowed position and a deployed position; an actuator coupled to the left track beam; left tertiary lock assembly coupled to the left track beam; and a right tertiary lock assembly coupled to the right track beam; wherein the actuator is configured to disengage the left tertiary lock assembly and the right tertiary lock assembly.

10 . The thrust reverser of claim 9 , wherein the left tertiary lock assembly comprises a lock coupled to a mounting plate via a pin.

11 . The thrust reverser of claim 10 , wherein the lock comprises a locking face configured lo interfere with the left translating sleeve, and a stop configured to contact the mounting plate in response to the left translating sleeve applying a force on the locking face.

12 . The thrust reverser of claim 9 , further comprising a spring which biases the left tertiary lock assembly to an engaged position.

13 . The thrust reverser of claim 11 , wherein the locking face extends through an aperture in the thrust reverser.

14 . The thrust reverser of claim 10 , wherein the left translating sleeve is configured to contact a ramp on the lock during forward translation of the left translating sleeve.

15 . The thrust reverser of claim 10 , wherein the lock rotates in a plane normal to a direction of translation of the left translating sleeve.

16 . A thrust reverser comprising:
a translating sleeve coupled to a track beam; a tertiary lock having an engaged position and a disengaged portion, and comprising a locking face configured to contact an engagement feature on the translating sleeve, and when the tertiary lock is in the engaged position, deployment of the translating sleeve will create a torque on the tertiary lock in a first direction, wherein pivoting of the tertiary lock in the first direction is blocked by a stop to prevent the translating sleeve from unintentionally deploying; and an actuator configured to contact a disengagement face of the tertiary lock to pivot the tertiary lock in a second direction opposite the first direction such that the locking face will not interfere with the engagement feature during translating sleeve deployment.

17 . The thrust reverser of claim 16 , further comprising a right tertiary lock, wherein the actuator is configured to disengage the right tertiary lock.

18 . The thrust reverser of claim 16 , wherein the tertiary lock comprises a ramp, wherein the translating sleeve is configured to contact the ramp during forward translation of the translating sleeve.

19 . The thrust reverser of claim 16 , further comprising a spring configured to bias the tertiary lock to an engaged position.

20 . The thrust reverser of claim 16 , wherein the locking face extends through an aperture in the thrust reverser.

Assignees

• Rohr Inc

Inventors

• Byrne Stuart

Classifications

• F02K1/766 Primary

  with blocking systems or locking devices; Arrangement of locking devices for thrust reversers · CPC title

• F02K1/76

  Control or regulation of thrust reversers · CPC title

• Y02T50/60

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

• F02K1/763

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