Delivery drop rate modulation
First Claim
1. An unmanned aerial vehicle (UAV) configured to deliver a package assembly to a delivery destination, the UAV comprising:
- a plurality of motors to generate thrust for the UAV;
a power system to selectively provide power to the plurality of motors, the plurality of motors operating the UAV to transport the package assembly to the delivery destination;
an attachment mechanism configured to attach the package assembly to the UAV; and
a package attachment controller configured to selectively operate the attachment mechanism to release the package assembly at least partially above a drop zone associated with the delivery destination; and
a tether coupled to the package assembly and the UAV, the tether wrapped at least in a first direction around the package assembly and wrapped at least in a second direction around the package assembly, the tether configured to rotate the package assembly in a plurality of directions as the tether unwraps from the package assembly, wherein the tether controls a rate of descent of the package assembly to reduce a sway of the package assembly.
1 Assignment
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Accused Products
Abstract
An unmanned aerial vehicle (UAV) can deliver a package to a delivery destination. Packages delivered by a UAV may be lowered towards the ground while the UAV continues to fly rather than the UAV landing on the ground and releasing the package. Packages may sway during lowering as a result of wind or movement of the UAV. By modulating a rate of descent of a package, a package sway may mitigated. The lowering mechanism includes wrapping a tether in various directions around the package such that the package rotates in a first and second direction as the package descends. Additionally, a rip-strip lowering mechanism that separates under tension to lower the package and a rappel mechanism that slides the package down a tether may be used. Accordingly, the tether can control a descent of the package assembly.
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Citations
20 Claims
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1. An unmanned aerial vehicle (UAV) configured to deliver a package assembly to a delivery destination, the UAV comprising:
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a plurality of motors to generate thrust for the UAV; a power system to selectively provide power to the plurality of motors, the plurality of motors operating the UAV to transport the package assembly to the delivery destination; an attachment mechanism configured to attach the package assembly to the UAV; and a package attachment controller configured to selectively operate the attachment mechanism to release the package assembly at least partially above a drop zone associated with the delivery destination; and a tether coupled to the package assembly and the UAV, the tether wrapped at least in a first direction around the package assembly and wrapped at least in a second direction around the package assembly, the tether configured to rotate the package assembly in a plurality of directions as the tether unwraps from the package assembly, wherein the tether controls a rate of descent of the package assembly to reduce a sway of the package assembly. - View Dependent Claims (2, 3)
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4. A system comprising:
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an unmanned aerial vehicle (UAV) configured to fly an item to a delivery location; a tether having a first end and a second end, the tether coupled to the UAV; an attachment mechanism configured to securely engage a package assembly and to selectively disengage the package assembly at least partially above a drop zone associated with the delivery location; and the package assembly coupled to the second end of the tether, the package assembly including at least the item in a container, wherein the tether controls a descent of the package assembly, and wherein the tether is wrapped at least in a first direction around the package assembly and wrapped at least in a second direction around the package assembly, the tether configured to rotate the package assembly in a plurality of directions as the tether unwraps from the package assembly after the package assembly is disengaged and as the package assembly falls toward a ground associated with the delivery location, wherein the tether controls a rate of descent of the package assembly to reduce a sway of the package assembly. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system comprising:
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a package assembly; and an unmanned aerial vehicle (UAV) configured to deliver the package assembly at a delivery location, wherein; a tether is coupled to the package assembly and the UAV, the tether is wrapped at least in a first direction around the package assembly and wrapped at least in a second direction around the package assembly, the tether is configured to rotate the package assembly in a plurality of directions as the tether unwraps from the package assembly, and the tether controls a rate of descent of the package assembly from the UAV to reduce a sway of the package assembly. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification