Noise modulation for unmanned aerial vehicles
US11753142B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2018 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Mar 19, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2210/571
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Various mechanisms and methods for altering sound output from an unmanned aerial vehicle (UAV) are disclosed. The UAV can have a drive system comprising a motor or a plurality of motors, and a processor operatively coupled to the drive system to control operation of the drive system. The UAV can further have a plurality of propellers that are rotatably drivable by the drive system, the plurality of propellers having physical characteristics such that, when drivingly rotated to maintain the UAV in stable flight, a first of the plurality of propellers emits a first note, and a second of the plurality of propellers emits a second, different note, a combination of the first and second notes producing a consonant sound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.