Electromechanical linear actuator for in blade rotor control
US9517839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2013 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | Oct 29, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotor blade assembly includes a rotor blade and a movable trim tab located along a span of the rotor blade. A linear positioner is located inside the rotor blade and operably connected to the trim tab to move the trim tab thereby reducing rotor blade vibration. A method for reducing vibration of a rotor assembly includes energizing a linear positioner located inside a rotor blade of the rotor assembly and moving an output piston of the linear positioner. A trim tab located at the rotor blade is moved to a selected trim tab angle relative to the rotor blade by the output piston, and the linear positioner is deenergized thereby locking the trim tab at the selected trim tab angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.