Multi-rotor vehicle with yaw control and autorotation
US10315759B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2016 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Nov 8, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64U2201/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle with superior performance and reliability. The vehicle, such as an unmanned aerial vehicle, is capable of vertical takeoff and landing, uses three swashless, variable-pitch vertical lift main rotors with a yaw tail rotor system. Two rear main rotors are optionally tiltrotors, which pivot to increase forward speed without the increased coefficient of drag inherent in tilting the entire vehicle. The three main rotors are positioned in an equilateral triangular configuration, improving balance, increasing load-bearing strength, and making it more compact in size. Movements are controlled through changes in pitch of the rotors, allowing the motors to maintain constant governed rotations per minute, maximizing drivetrain efficiency. Various embodiments allow for smaller vehicle size with greater performance than prior art vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.