Watercrafts with active hulls attain substantial hydrodynamic drag reduction
US6595815B2 · kind B2 · utility
0Cited by
3References
5Claims
0Family size
Inventors
Key dates
| Filing date | May 14, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | May 14, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H1/38
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Watercrafts comprising rotatable hulls that serve as propulsors. The hulls are rotors with paddle surfaces and are arranged three-dimensionally to gain the capability of actively diverting water toward the side and the rear, for the purpose of drastically reducing frontal drag and the capability of minimizing friction drag on their wetted surfaces. Watercrafts with rotatable hulls are essentially amphibious.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.