Dry lubricated rotary actuator for in blade rotor control
US9440738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2013 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Dec 9, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18056
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotor blade assembly includes a rotor blade, a rotatable flap portion disposed along a span of the rotor blade. A rotary actuator is located inside the rotor blade and is operably connected to the flap portion to rotate the flap portion about a flap axis. A rotary-winged aircraft includes an airframe and a main rotor assembly operably connected to the airframe. The main rotor assembly includes a plurality of rotor blade assemblies rotatable about a rotor assembly axis. At least one rotor blade assembly of the plurality of rotor blade assemblies includes a rotor blade and a rotatable flap portion disposed along a span of the rotor blade. A rotary actuator located inside the rotor blade and is operably connected to the flap portion to rotate the flap portion about a flap axis. The rotary actuator is absent oil, grease or other fluid lubricant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.