Rotor blade and method of making same
US8632310B2 · kind B2 · utility
3Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2007 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Feb 2, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1052
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A helicopter rotor blade includes a structural composite skin defining a cavity therein; a composite spar disposed within the cavity and adhesively bonded to the skin, a portion of the spar exhibiting a C-shape in cross section; and a foam core disposed within the cavity and adhesively bonded to the skin. The structural composite skin forms an external, closed box structure configured to transmit mechanical loads encountered by the rotor blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.