公开(公告)号：US10800517B1

公开(公告)日：2020-10-13

申请号：US16668551

申请日：2019-10-30

Applicant: Amazon Technologies, Inc.

Inventor： Vedran Coralic ,  Cyriel Notteboom ,  David Moro Ludena

IPC: B64C27/10 ,  B64C39/02 ,  B64C27/82 ,  B64C27/14

Abstract: Aerial vehicles may be equipped with propellers having pivotable blades that are configured to rotate when the propellers are not rotating under power. A pivotable blade may rotate about an axis of a propeller with respect to a hub until the pivotable blade is coaligned with a fixed blade. When the propeller is rotating, a lifting force from the blade may cause the blade to rotate to a deployed position that is not coaligned with the fixed blade.

公开(公告)号：US10399666B2

公开(公告)日：2019-09-03

申请号：US15194477

申请日：2016-06-27

Applicant: Amazon Technologies, Inc.

Inventor： Brian C. Beckman ,  John Raymond Brodie ,  Vedran Coralic ,  Taylor David Grenier ,  Gur Kimchi ,  Dominic Timothy Shiosaki ,  Ricky Dean Welsh ,  Richard Philip Whitlock

IPC: B64C11/48 ,  B64C39/02 ,  B64C11/28 ,  B64C11/30 ,  B64C11/00 ,  B64C11/50

Abstract: Sounds are generated by an aerial vehicle during operation. For example, the motors and propellers of an aerial vehicle generate sounds during operation. Systems, methods, and apparatus may actively adjust the position and/or configuration of one or more propeller blades of a propulsion mechanism to generate different sounds and/or lifting forces from the propulsion mechanism.

公开(公告)号：US20170274978A1

公开(公告)日：2017-09-28

申请号：US15194480

申请日：2016-06-27

Applicant: Amazon Technologies, Inc.

Inventor： Brian C. Beckman ,  John Raymond Brodie ,  Vedran Coralic ,  Taylor David Grenier ,  Gur Kimchi ,  Dominic Timothy Shiosaki ,  Ricky Dean Welsh ,  Richard Philip Whitlock

IPC: B64C11/00 ,  B64C11/18 ,  B64C11/48 ,  B64C11/20 ,  B64C11/28 ,  B64C39/02 ,  B64C11/24

CPC classification number: B64C39/024 ,  B64C2201/027 ,  B64C2201/108 ,  B64C2220/00

Abstract: Sounds are generated by an aerial vehicle during operation. For example, the motors and propellers of an aerial vehicle generate sounds during operation. Disclosed are systems, methods, and apparatus for actively adjusting the position and/or configuration of one or more propeller blades of a propulsion mechanism to generate different sounds and/or lifting forces from the propulsion mechanism.

公开(公告)号：US20170174334A1

公开(公告)日：2017-06-22

申请号：US15189861

申请日：2016-06-22

Applicant: Amazon Technologies, Inc.

Inventor： Brian C. Beckman ,  Vedran Coralic ,  Gur Kimchi

IPC: B64C27/00 ,  G10K11/178 ,  B64C39/02

CPC classification number: B64C27/001 ,  B64C11/00 ,  B64C11/20 ,  B64C39/024 ,  B64C2201/108 ,  B64C2220/00 ,  G10K11/178 ,  G10K11/17883 ,  G10K2210/121 ,  G10K2210/1281 ,  G10K2210/3229

Abstract: The present disclosure is directed to controlling, reducing, and/or altering sound generated by an aerial vehicle, such as an unmanned aerial vehicle (“UAV”), while the aerial vehicle is airborne. For example, one or more transducers, such as piezoelectric thin-film transducers, or carbon nanotube transducers may be applied or incorporated into or on the surface of propeller blades that are used to aerially navigate the aerial vehicle. As the propeller blade rotates and generates sound, the transducers may be activated to generate one or more anti-sounds that cancel, reduce, or otherwise modify the sound generated by the rotation of the propeller blade. The anti-sound combines with the sound and causes interference such that the combined, or net-effect, is an overall cancellation, reduction, or other modification of the sound.