Aerodynamic lifting device and airborne craft
US7556218B2 · kind B2 · utility
8Cited by
20References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2006 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Mar 15, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C39/064
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An airborne craft is provided comprising an aerodynamic lifting device having a radial drum fan with an operating region intermediate the power loading (“y”) asymptotic region and the disc loading (“x”) asymptotic region of a power loading—disc loading characteristic for the lifting device. The radial drum or vertical axis fan comprises a fan with a rotor, the rotor having a rotational axis and comprising a plurality of rotor blades disposed in an annular ring about the rotational axis and a driving means for the rotor such that, on operation of the driving means, lift is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.