A locking system for a cascade thrust reverser on a bypass turbofan is disclosed. The locking system includes a translating sleeve configured to move between a stowed position and a deployed position. A lock member is mounted to a beam and has a locking portion which contacts a roller on the transla
A locking system for a cascade thrust reverser on a bypass turbofan is disclosed. The locking system includes a translating sleeve configured to move between a stowed position and a deployed position. A lock member is mounted to a beam and has a locking portion which contacts a roller on the translating sleeve to retract the locking portion when the translating sleeve moves to the stowed position.
대표청구항▼
1. A locking system for a cascade thrust reverser on a bypass turbofan comprising: a translating sleeve configured to move between a stowed position and a deployed position along a first linear axis; a lock member mounted to a beam and having a locking portion comprising a lock pin, the lock pin pro
1. A locking system for a cascade thrust reverser on a bypass turbofan comprising: a translating sleeve configured to move between a stowed position and a deployed position along a first linear axis; a lock member mounted to a beam and having a locking portion comprising a lock pin, the lock pin providing a contact surface and being movable between an extended position and a retracted position along a second linear axis perpendicular to said first axis, the lock pin being engageable with the translating sleeve to lock the translating sleeve in the stowed position when the lock pin is in the extended position and being disengageable from the translating sleeve to allow the translating sleeve to move toward the deployed position when the locking portion is in the retracted position; and at least one roller disposed so as to directly contact the contact surface of the lock pin when the lock pin is in the extended position and the translating sleeve moves from the deployed position to the stowed position, the at least one roller being rotatable along a third linear axis perpendicular to the first axis and the second axis, wherein in response to direct contact of the lock in against the at least one roller, rotation of the at least one roller against the contact surface of the pin retracts the pin from the extended position into the retracted position. 2. The system of claim 1, said locking portion further comprising an actuator comprising an internal spring in biasing engagement with the lock pin, wherein the spring is configured to bias the lock pin towards the extended position and said actuator is configured to provide an opposing retracting force,wherein absent retracting force from the actuator, the spring will extend said lock pin,the actuator providing a primary retracting system and the roller providing an alternate secondary retracting system to overcome the force exerted by the spring in the actuator. 3. The locking system according to claim 1, wherein the translating sleeve comprises a closeout, and wherein the locking portion is engageable with a portion of the closeout at least when the translating sleeve is in the stowed position and the locking portion is in the extended position. 4. The locking system according to claim 3, wherein the portion of the closeout is a lock stop. 5. The locking system according to claim 3, wherein the translating sleeve comprises a slider, the closeout being supported by the slider. 6. The locking system according to claim 5, wherein the beam comprises a channel, and wherein at least a portion of the slider slides over the channel when the translating sleeve moves between the stowed position and the deployed position. 7. The locking system according to claim 1, wherein the contact between the roller and the lock pin at least partially retracts the lock pin. 8. The locking system according to claim 1, wherein the roller is mounted to the translating sleeve. 9. The locking system according to claim 1, wherein the at least one roller is configured to rotate when in contact with the lock pin. 10. A cascade type thrust reverser for an air duct of a turbofan engine comprising: a beam; a translating sleeve slidingly engaged with the beam so as to slide relative to the beam between a deployed position and a stowed position; a lock member supported by the beam and having a locking portion, the locking portion being movable between an extended position and a retracted position along a first linear axis, the lock member comprising an actuator including a biasing member in biasing engagement with the locking portion to bias the locking portion to the extended position; and a member mounted to the translating sleeve so as to rotate about a second linear axis, and retract the locking portion when the locking portion contacts the member and the translating sleeve slides towards the stowed position. 11. The thrust reverser according to claim 10, wherein the translating sleeve comprises a closeout, and wherein the locking portion is engageable with a portion of the closeout at least when the translating sleeve is in the stowed position and the locking portion is in the extended position. 12. The thrust reverser according to claim 11, wherein the portion of the closeout is an opening. 13. The thrust reverser according to claim 10, wherein the biasing member comprises a mechanical spring which biases the locking portion in a direction towards the extended position. 14. The thrust reverser according to claim 10, wherein the locking portion includes a chamfered surface which contacts the member. 15. The thrust reverser according to claim 10 further comprising a second member mounted to the translating sleeve so as to rotate about an axis parallel to said second linear axis and at least partially retract the locking portion when the locking portion contacts the second member and the translating sleeve is sliding towards the stowed position. 16. The thrust reverser according to claim 10, wherein the lock member is hydraulically actuated, and wherein hydraulic actuation of the lock member moves the locking portion towards the retracted position. 17. A cascade type thrust reverser for an air duct of a turbofan engine comprising: a fixed member; a translating member configured to move with respect to the fixed member between a deployed position and a stowed position; a lock member mounted to one of the fixed member and the translating member, the lock member having a locking portion, the locking portion being movable between a lock position and an unlock position along a linear axis, the lock member having a contact surface; and a member having a rotational axis and being mounted to the other one of the fixed member and the translating member, the member being configured to rotate and retract the locking member towards the unlocked position when the contact surface of the locking portion contacts the member and the translating member moves towards the stowed position. 18. The thrust reverser according to claim 17, wherein the translating member comprises a closeout, and wherein the locking portion is engageable with a portion of the closeout at least when the translating member is in the stowed position and the locking portion is in the lock position. 19. The thrust reverser according to claim 18, wherein the portion of the closeout is a lock stop. 20. The thrust reverser according to claim 18, wherein the portion of the closeout is an opening.
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이 특허에 인용된 특허 (1)
Johnson Andrew T. ; Takeuchi Donald I. ; Chakkera Kevin, Lightweight tertiary thrust reverser lock assembly with a blocking member.
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