Composite rotor blade
US4083656A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1975 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Mar 21, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24149
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A composite rotor blade has a nose spar of fiber reinforced plastic with the fibers extending spanwise the length of the spar and at the root encircling a transverse hub attachment structure with the spar provided with a tubular inner liner of cross ply filament wound fiberglass forming a closure for the nose spar with a blad afterbody structure including skins for integrating the afterbody with the nose spar and liner. Preferably the spar has an inner liner and an outer liner both of cross ply filament wound fiberglass in multi layers. The blade afterbody structure includes honeycomb filler having cells extending in the direction of blade thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.