Beam for a rotorcraft rotor and rotorcraft rotor
US10189563B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2014 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Nov 16, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/35
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A beam for a rotorcraft rotor and particularly to a helicopter rotor. Said beam comprises a hub connection portion, a blade connection portion, a first flexure portion located between the hub connection portion and the blade connection portion and having a bending stiffness about a first axis which is orthogonal to the longitudinal axis of the blade, said bending stiffness being smaller than that of the hub connection portion and that of the blade connection portion and a shear portion located between the hub connection portion and the blade connection portion and having a shear stiffness parallel to a second axis which is orthogonal to the longitudinal axis of the blade and non-parallel to the first axis. Said shear stiffness is smaller than that of the hub connection portion and that of the blade connection portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.