Large airfoil structure and method for its manufacture
US4643646A · kind A · utility
71Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Feb 12, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An airfoil particularly suited for use in rotor blades of large wind-driven ower plants is formed in three modular sections including a nose or leading section, a spar section and a trailing section, each separately formed and subsequently assembled. In the method of the invention the spar section is formed in two separate mold units which are configured to form part of the upper and lower aerodynamic profile of the airfoil and the two spar section units are trimmed along a junction plane and then joined together at the junction plane to form the spar section of the airfoil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.