Hydraulic actuator
AssigneeNabtesco Corporation
InventorKoji ITO
Life of this patent
Estimating the term…
Abstract
A hydraulic actuator is adapted to drive a spoiler of a wing having a flap. When the hydraulic actuator drives the spoiler in an overlapping region where a driving range of the flap and a driving range of the spoiler overlap, an output suppressing structure suppress a drive output of the hydraulic actuator in the overlapping region to be less than that in a non-overlapping region other than the overlapping region.
Claims18
A hydraulic actuator adapted to drive a spoiler of a wing having a flap, the hydraulic actuator comprising:
- an output suppressing structure configured to, when the hydraulic actuator drives the spoiler in an overlapping region where a driving range of the flap and a driving range of the spoiler overlap, suppress a first drive output which is a drive output of the hydraulic actuator in the overlapping region to be less than a second drive output which is a drive output of the hydraulic actuator in a non-overlapping region other than the overlapping region.
A hydraulic actuator adapted to drive a spoiler of an aircraft wing having a flap, the spoiler being movable in a spoiler driving range, the flap being movable in a flap driving range, and the spoiler driving range including an overlapping region where the spoiler driving range and the flap driving range overlap, the spoiler taking a neutral position when the aircraft cruises, the hydraulic actuator comprising:
- a piston rod configured to transmit a drive output of the hydraulic actuator to the spoiler;
- and
- a movement limiting structure configured to limit a movement of the piston rod in a direction in which the spoiler approaches the flap when the spoiler is located in the overlapping region and when the spoiler takes the neutral position.
A hydraulic actuator adapted to drive a spoiler of a wing having a flap, the spoiler being movable in a spoiler driving range, the flap being movable in a flap driving range, and the spoiler driving range including an overlapping region where the spoiler driving range and the flap driving range overlap, the hydraulic actuator comprising:
- a housing having a housing bore;
- a first piston member coupled to the spoiler and axially movable in the housing bore to drive the spoiler;
- and
- a second piston member coupled to the housing and the first piston member, wherein the second piston member is configured to interact with the first piston to prevent the flap from interfering with or pressing down the flap when the spoiler droops down in the overlapping region.
Dependencies are inferred from the claim text.