Method for constructing a rotor blade intended for a rotorcraft, blade and rotorcraft
US11691719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2021 |
| Grant date | Jul 4, 2023 |
| Priority date | — |
| Expiry date | May 24, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/473
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A blade in which the aerodynamic profiles of a blade root, a blade neck and a central part of a profiled zone of the blade respectively comprise a leading edge section and a trailing edge section that are symmetrical to each other relative to an axis of symmetry. The present disclosure also concerns a method for constructing such a blade. The axis of symmetry is perpendicular to a segment connecting the leading edge to the trailing edge of each profile and is positioned in the middle of the segment. An intermediate upper surface section and an intermediate lower surface section connect the leading edge section and the trailing edge section in order to respectively form a lower surface of the aerodynamic profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.