Sounds are generated by an aerial vehicle during operation. For example, the motors and propellers of an aerial vehicle generate sounds during operation. Disclosed is an adjustable propeller that may alter shapes during operation or rotation of the propeller such that the sound generated by the rotation of the propeller changes. The propeller may include multiple sections and joints that allow movement of the sections in any direction. Likewise, the propeller may include one or more sound flaps that may be opened or closed to further alter the sound generated as the propeller rotates.
Adjustable propeller blade with sound flaps
2019-08-06
Patent
Electronic Resource
English
IPC: | B64C AEROPLANES , Flugzeuge |
Braking propeller with adjustable blade
Engineering Index Backfile | 1931
BLADE, PARTICULARLY ADJUSTABLE-PITCH BLADE, PROPELLER WITH SUCH BLADE AND TURBOMACHINE
European Patent Office | 2016
|