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公开(公告)号：US20170166304A1
公开(公告)日：2017-06-15
申请号：US14967070
申请日：2015-12-11
Applicant: Amazon Technologies, Inc.
Inventor： Jack Erdozain, JR. , Louis LeRoi LeGrand, III , Joshua White Traube
CPC classification number: B64C27/58 , B64C11/02 , B64C27/12 , B64C39/024 , B64C2201/024 , B64C2201/042 , B64C2201/108 , B64C2201/162 , B64C2201/165 , H02K7/106 , H02K7/114 , H02K7/14 , H02K49/10
Abstract: A propeller alignment device is described. The propeller alignment device can include a second retainer attached to a propeller and a motor. The propeller alignment device can also include a first retainer that does not rotate, but that is aligned with the second retainer. The first retainer can include two or more magnets oppositely orientated relative to each other. The second retainer can also include two or more magnets oppositely orientated relative to each other. As the second retainer rotates relative to the first retainer, the magnets may alternatingly align with each other. In the absence of a current applied to the motor, the magnets may magnetically bias the second retainer into a predetermined orientation relative to the first retainer. The predetermined orientation can be predetermined to correspond to an alignment of the propeller that is desirable (e.g., that minimizes aerodynamic drag on the propeller).
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公开(公告)号：US20180079497A1
公开(公告)日：2018-03-22
申请号：US15826470
申请日：2017-11-29
Applicant: Amazon Technologies, Inc.
Inventor： Jack Erdozain, JR. , Louis LeRoi LeGrand, III , Joshua White Traube
CPC classification number: B64C27/58 , B64C11/02 , B64C27/12 , B64C39/024 , B64C2201/024 , B64C2201/042 , B64C2201/108 , B64C2201/162 , B64C2201/165 , H02K7/106 , H02K7/114 , H02K7/14 , H02K49/10
Abstract: A propeller alignment device is described. The propeller alignment device can include a second retainer attached to a propeller and a motor. The propeller alignment device can also include a first retainer that does not rotate, but that is aligned with the second retainer. The first retainer can include two or more magnets oppositely orientated relative to each other. The second retainer can also include two or more magnets oppositely orientated relative to each other. As the second retainer rotates relative to the first retainer, the magnets alternatingly align with each other. In the absence of a current applied to the motor, the magnets may magnetically bias the second retainer into a predetermined orientation relative to the first retainer.
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公开(公告)号：US20170247109A1
公开(公告)日：2017-08-31
申请号：US15595556
申请日：2017-05-15
Applicant: Amazon Technologies, Inc.
Inventor： Daniel Buchmueller , Louis LeRoi LeGrand, III , Jack Erdozain, JR. , Scarlett Elizabeth Koller , Eric Alexander Riehl , Trevor Barr Walker
CPC classification number: B64C39/024 , B64C15/14 , B64C2201/024 , B64C2201/027 , B64C2201/042 , B64C2201/108 , B64C2201/128 , B64C2201/14 , B64C2201/146 , B64D1/08 , B64D1/12 , G05D1/00 , G05D1/0011 , G05D1/0094 , G05D1/0202 , G06Q10/083
Abstract: Stabilized delivery using an Unmanned Aerial Vehicle (UAV) is described. In one embodiment, the UAV includes a flight controller configured to control a flight path of the UAV, a winch mechanism secured to an underside of the UAV, a platform tethered to and extendable from the winch mechanism, and a ballast system configured to stabilize the platform. The winch mechanism may be relied upon to drop an item for delivery without landing the UAV. The winch mechanism can include a first winch mechanism secured to the UAV at a first orientation and a second winch mechanism secured to the UAV at a second orientation. Because the winch mechanism may give rise to certain design and operating considerations, various active and passive flight and/or ballast control systems are described. These systems maintain an orientation of the UAV, the platform, and/or the item during one or more stages of airborne drop delivery.
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