Rotorcraft with canted coaxial rotors
US11027836B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2018 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | May 11, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C2027/8227
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotorcraft has a frame and a plurality of rotors connected to the frame. The frame has a roll axis and a pitch axis. Each of the rotors includes a rotor shaft. The rotor shaft of each of the rotors is canted with respect to at least one of the roll axis and the pitch axis. The rotor shaft of each of the rotors may be canted between 3 and 15 degrees. Each of the rotors may be a co-axial co-rotating rotor. The rotors may be oriented in opposing pairs across the frame. Both rotors in each opposing pair rotate in the same direction. The rotorcraft may include at least two additional rotors, each having a forward cant. Each of the additional rotors may be a co-axial contra-rotating rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.