Thrust reverser system actuator having an integral torque limiter
First Claim
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1. A thrust reverser control system, comprising:
- a power drive unit operable to supply a drive force;
at least two drive mechanisms each coupled to receive the drive force from the power drive unit; and
at least two actuator assemblies, each actuator assembly coupled to at least one of the drive mechanisms and including;
an actuator coupled to receive the drive force from one of the drive mechanisms, the actuator having at least one end that rotates in response to the drive force and configured to move, upon receipt of the drive force, between a stowed position and a deployed position, a torque limiter assembly mounted to the end of the actuator and configured to limit torque in the actuator assembly upon a torque magnitude being reached in at least the actuator while allowing continued rotation of the at least one end of the actuator, at least two roller pins, each roller pin having an outer surface and moveably mounted in one of the rod end assembly grooves, and at least two substantially resilient cantilever arms each having a fixed end and a free end, each cantilever arm fixed end fixedly coupled to the extension tube and each cantilever arm free end in contact with the outer surface of one of the roller pins, to thereby apply a radial load thereon.
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Abstract
A thrust reverser system actuator assembly is provided that includes a torque limiter to limit the number of torque that may be applied to the actuator assembly. The actuator assembly includes an actuator and a torque limiter assembly. The actuator is adapted to receive a drive force and is configured, in response to receipt of the drive force, to move between a stowed position and a deployed position. The torque limiter assembly is coupled to an end of the actuator and is configured to limit torque applied to the actuator assembly upon a torque magnitude being reached in at least the actuator.
95 Citations
24 Claims
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1. A thrust reverser control system, comprising:
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a power drive unit operable to supply a drive force;
at least two drive mechanisms each coupled to receive the drive force from the power drive unit; and
at least two actuator assemblies, each actuator assembly coupled to at least one of the drive mechanisms and including;
an actuator coupled to receive the drive force from one of the drive mechanisms, the actuator having at least one end that rotates in response to the drive force and configured to move, upon receipt of the drive force, between a stowed position and a deployed position, a torque limiter assembly mounted to the end of the actuator and configured to limit torque in the actuator assembly upon a torque magnitude being reached in at least the actuator while allowing continued rotation of the at least one end of the actuator, at least two roller pins, each roller pin having an outer surface and moveably mounted in one of the rod end assembly grooves, and at least two substantially resilient cantilever arms each having a fixed end and a free end, each cantilever arm fixed end fixedly coupled to the extension tube and each cantilever arm free end in contact with the outer surface of one of the roller pins, to thereby apply a radial load thereon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A thrust reverser actuator assembly, comprising:
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an actuator adapted to receive a drive force, the actuator having at least one end that rotates in response to the drive force and configured, in response to receipt of the drive force, to move between a stowed position and a deployed position, the actuator including a rotationally mounted actuator shaft configured to rotate, upon receipt of the drive force, in a stow direction and a deploy direction, an extension tube mounted on the actuator shaft and configured to translate between the stowed postion and the deployed position in response to actuator shaft rotation in the stow direction and the deploy direction, respectively, and a rod end assembly having at least two grooves formed in an outer surface thereof; and
a torque limiter assembly mounted to the end of the actuator and configured to limit torque applied to the actuator assembly upon a torque magnitude being reached in at least the actuator while allowing continued rotation of the at least one end of the actuator, the torque limiter assembly including;
at least two roller pins, each roller pin having an outer surface and moveably mounted in one of the rod end assembly grooves, and at least two substantially resilient cantilever arms each having a fixed end and a free end, each cantilever arm fixed end fixedly coupled to the extension tube and each cantilever arm free end in contact with the outer surface of one of the roller pins, to thereby apply a radial load thereon. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification