초록 ▼

This disclosure relates to a landing gear system that includes a landing gear strut rotatable between stowed and deployed positions. A lock-stay is connected to the landing gear strut and is movable between locked and unlocked conditions. An unlock actuator is connected to the lock-stay and includes

This disclosure relates to a landing gear system that includes a landing gear strut rotatable between stowed and deployed positions. A lock-stay is connected to the landing gear strut and is movable between locked and unlocked conditions. An unlock actuator is connected to the lock-stay and includes first and second members movable relative to one another. The first member is movable between first and second positions that correspond to the locked and unlocked conditions. A controller is in communication with the unlock actuator and is configured to command the unlock actuator between the first and second positions in response to an input. The second member is permitted to free-drive relative to the first member between the stowed and deployed positions with the lock-stay in the unlocked condition.

대표청구항 ▼

1. A landing gear actuator comprising: a motor;a screw coupled to the motor;a member having a nut that is coupled to the screw, the member movable between first and second positions that correspond to locked and unlocked conditions; anda rod movable relative to the member during a jammed condition i

1. A landing gear actuator comprising: a motor;a screw coupled to the motor;a member having a nut that is coupled to the screw, the member movable between first and second positions that correspond to locked and unlocked conditions; anda rod movable relative to the member during a jammed condition in which member is arranged in an undesired position between the first and second positions, the rod being permitted to free-drive relative to the member with the member in the undesired position. 2. The landing gear actuator according to claim 1, wherein the member includes fingers and the rod is connected to a guide, the finger and guide interlocking with one another under normal operating conditions, and the fingers and guide decoupling from one another during the jammed condition permitting the rod to free-drive relative to the member. 3. The landing gear actuator according to claim 2, wherein the jammed condition corresponds to the member in the undesired condition. 4. The landing gear actuator according to claim 2, comprising a collar deflecting the fingers radially to engage the guide with hooks provided by the fingers. 5. The landing gear actuator according to claim 2, wherein the member pulls the rod from the lock condition to the unlock condition with the fingers and guide interlocked. 6. The landing gear actuator according to claim 4, wherein the fingers include an undeflected position in the undesired position in which the member is spaced from the collar. 7. The landing gear actuator according to claim 6, wherein the guide is configured to slide past the hooks in the undesired position and free-drive relative to the member. 8. The landing gear actuator according to claim 6, wherein the member and rod are coaxial and are nested relative to one another during normal operating conditions, the guide being blocked from being received in the member when the guide is arranged in a space between the collar and the member. 9. The landing gear actuator according to claim 8, wherein the member occupies the space when in the second position during normal operation preventing the guide from moving axially past the fingers. 10. The landing gear actuator according to claim 1, comprising position sensors configured to detect a position of the member. 11. A method of actuating a landing gear comprising the steps of: commanding an unlock actuator to retract a lock-stay;jamming a portion of the unlock actuator in an undesired position;commanding another actuator to retract the landing gear;free-driving the unlock actuator in the undesired position with the other actuator; anddeploying the landing gear from a stowed position to a deployed position with the actuator in the undesired position. 12. The method according to claim 11, comprising the step of blocking another portion of the unlock actuator and preventing restowing of the landing gear subsequent to the deploying step. 13. The method according to claim 12, comprising the free-driving step includes free-driving another portion of the unlock actuator relative to the portion when in the undesired position.