Actuators and methods for aircraft flight control surfaces
US10689097B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 13, 2015 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Feb 27, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2025/2081
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Actuators and methods useful in the operation aircraft flight control surfaces are disclosed. Some of the actuators and methods disclosed may be useful in the operation flight control surfaces when a fault condition such as a jam associated with an actuator is detected. An exemplary electromechanical actuator disclosed comprises: a motor; a first screw configured for translation movement relative to a structure of the aircraft when driven by the motor; a second screw mounted in series with the first screw; and a fuse element coupling the first screw and the second screw together to permit translation movement of the second screw together with the first screw. The fuse element may permit at least partial disengagement of the second screw from the first screw to permit translation of the second screw relative to the first screw. The fuse element may also allow an active flutter damping of the flight control surface. The fuse element may comprise magneto-rheological fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.