Passive rotor alignment in a free-wheeling state
US11305871B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Mar 22, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C29/0025
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Rotor assemblies for aircraft are described where one or more blades of the rotor assembly includes a blade alignment device that passively orients a blade in response to an airflow around the blade alignment device when the rotor assembly is free-wheeling. One embodiment comprises a method of operating a rotor assembly for aircraft. The method comprises operating the rotor assembly in a free-wheeling state, where the rotor assembly includes a rotary hub that rotates about an axis and a plurality of blades extending radially from the rotary hub. At least one of the plurality of blades includes a blade alignment device. The method further comprises aligning the at least one of the plurality of blades in response to airflow around the blade alignment device when the rotor assembly is in the free-wheeling state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.