Closing device for an airfoil
US4640477A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1984 |
| Grant date | Feb 3, 1987 |
| Priority date | — |
| Expiry date | Dec 31, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C9/22
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improvement to close an opening formed in the leading edge of an airfoil when a slat is moved to its deployed position. The track which deploys the slat has a downward component of motion which leaves an opening in the wing leading edge that can cause premature stall in the opening is not closed. To close this opening, there is a door which is mounted about an axis of rotation that is positioned in a vertical plane generally parallel to the movement of the track. Further, the axis of rotation is slanted so that the door moves upwardly, rearwardly and laterally to its retracted position so as to permit the track to be retracted, and when the track is extended, a spring moves the door into its deployed position to close the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.