Rotary airfoil and design therefore
US11407510B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2020 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Oct 28, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C2220/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The rotary airfoil 100 defines a cross section and a span, wherein the cross section is a function of the point along the span (e.g., spanwise point) and defines an upper surface and a lower surface at each spanwise point. The rotary airfoil 100 also defines, at a cross section, a lift coefficient (CL) that is a function of the angle of attack at which the airfoil is rotated through the air. The system can optionally include: a rotor hub to mount the rotary airfoil, a tilt mechanism to pivot the rotary airfoil between a forward configuration and a hover configuration, and a pitching mechanism to change the angle of attack of the rotary airfoil 100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.