This disclosure describes aerial vehicles and systems for altering the noise generated by the rotation of a propeller during flight of the aerial vehicle. In some implementations, propellers of the aerial vehicle are paired in a coaxially aligned configuration in which the pair of propellers both rotate in the same direction, are rotationally phase aligned, and separated a defined distance so that the noise from high pressure pulse of the induced flow from the lower propeller is at least partially canceled out by the noise of the high pressure pulse of the induced flow from the upper propeller.
COAXIALLY ALIGNED PROPELLERS OF AN AERIAL VEHICLE
2017-09-28
Patent
Electronic Resource
English
IPC: | B64C AEROPLANES , Flugzeuge |
Aerial vehicle propulsion mechanism with coaxially aligned propellers
European Patent Office | 2020
|AERIAL VEHICLE PROPULSION MECHANISM WITH COAXIALLY ALIGNED PROPELLERS
European Patent Office | 2017
|