Method and system for stall-tolerant rotor
US8764397B1 · kind B1 · utility
6Cited by
9References
26Claims
0Family size
Inventor
Key dates
| Filing date | Jan 16, 2007 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Jan 1, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/16
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotor system is provided wherein coaxial, closely spaced multi-bladed rotors counter-rotate at extremely low RPMs while their pitches are controlled to account for wind gusts and velocity conditions, thereby eliminating many of the deficiencies of conventional helicopters. The embodiments can dramatically decrease the power required to lift a given quantity of weight, even beyond the level required by a typical airplane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.