Importance

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Abstract

Certain embodiments of the present application relate to an unmanned aerial vehicle including a control system, at least one rotor, a line, and a load sensor. The load sensor includes an actuating arm engaged with the line, and the load sensor is operable to detect a loaded/unloaded state of the line based on a position of the actuating arm. The line places the actuating arm in a depressed position when a parcel is supported by the line to thereby indicate the loaded/unloaded as a loaded state. The line permits the actuating arm to adopt a projected position when the parcel is not supported by the line to thereby indicate the loaded/unloaded as a loaded state. The control system is configured to raise and/or lower the free portion of the line based upon the loaded/unloaded state of the line.

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First Claim