Assembly for an aircraft
AssigneeRatier-Figeac SAS
InventorGhislain TEYSSIER
Life of this patent
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Abstract
An assembly for maintaining the pitch angle of a flight control surface for an aircraft. The assembly includes a shaft comprising a screw thread and defining a shaft axis, and a nut. The nut includes a housing, a barrel located in the housing and comprising a screw thread for engaging with the screw thread of the shaft, and at least one locking element located in the housing. The housing comprises a radially inner cam surface adjacent to the locking element. The barrel is configured to rotate relative to the housing when the screw thread of the barrel is engaged and rotating with the screw thread of the shaft so as to move the locking element along the cam surface from a disengaged position in which the locking element is spaced from the screw thread of the shaft, to an engaged position.
Claims15
An assembly for maintaining the pitch angle of a flight control surface for an aircraft, preferably a trimmable horizontal stabiliser, the assembly comprising:
- a shaft comprising a screw thread and defining a shaft axis;
- and
- a nut comprising:
- a housing;
- a barrel located in the housing and comprising a screw thread for engaging with the screw thread of the shaft;
- and
- at least one locking element located in the housing;
- wherein:
- the housing comprises a radially inner cam surface adjacent to the at least one locking element;
- and
- the barrel is configured to rotate relative to the housing when the screw thread of the barrel is engaged and rotating with the screw thread of the shaft so as to move the locking element along the cam surface from a disengaged position in which the locking element is spaced from the screw thread of the shaft, to an engaged position in which the locking element is wedged between the screw thread of the shaft and the housing thereby preventing relative rotation between the shaft and the housing.
Dependencies are inferred from the claim text.