AIRCRAFT STABILIZER ACTUATOR
First Claim
1. An actuator for actuating translation movement of a component relative to a structure, said actuator comprising:
- a control-motion-providing assembly comprising a drive path from a motion provider to the component;
a motion-permit-prevent assembly comprising a screw member which is not part of the drive path and a nut member;
wherein the motion-permit-prevent assembly is convertible between;
a motion-permitting mode wherein relative rotation between the screw member and the nut member is permitted and translation movement of the component causes such relative rotation; and
a motion-preventing mode wherein relative rotation between the screw member and the nut member is prevented and translation movement of the component is prevented; and
a sensing system which senses a failure in the drive path and conveys this detection to the motion-permit-prevent assembly for conversion to its motion-preventing mode.
1 Assignment
0 Petitions
Accused Products
Abstract
An actuator (30) for actuating translation movement of a component (32) (e.g., a horizontal stabilizer) relative to a structure (34) (e.g., an aircraft'"'"'s rear fuselage). The actuator (30) comprises a control-motion-providing assembly (40) having a drive path from a motion provider (52) to the component (32), a motion-permit-prevent assembly (42), and a sensing system (94) which senses a failure in the drive path. The motion-permit-prevent assembly (42) comprises a screw member (74), which is not part of the drive path, and a nut member (76). Upon detection drive-path failure by the sensing system (94), the motion-permit-prevent assembly (42) converts from a motion-permitting mode (whereat relative rotation between the screw-nut members (74/76) is permitted) to a motion-preventing mode (whereat relative rotation of the screw-nut members (74/76) is prevented). In the motion-preventing mode, the component (32) is locked or immobilized.
44 Citations
19 Claims
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1. An actuator for actuating translation movement of a component relative to a structure, said actuator comprising:
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a control-motion-providing assembly comprising a drive path from a motion provider to the component; a motion-permit-prevent assembly comprising a screw member which is not part of the drive path and a nut member;
wherein the motion-permit-prevent assembly is convertible between;a motion-permitting mode wherein relative rotation between the screw member and the nut member is permitted and translation movement of the component causes such relative rotation; and a motion-preventing mode wherein relative rotation between the screw member and the nut member is prevented and translation movement of the component is prevented; and a sensing system which senses a failure in the drive path and conveys this detection to the motion-permit-prevent assembly for conversion to its motion-preventing mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification