UAV Sling Load Attachment for Autonomous Cargo Pickup
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Solution Overview
Problem
Current methods for transporting sling-loaded cargo using aerial vehicles require manual operation to attach and detach the sling cable, which is inefficient and labor-intensive, especially with the increasing use of unmanned aerial vehicles (UAVs).
Innovation Solution
A system and method for an unmanned aerial vehicle (UAV) that includes electronically-controllable attachment devices and sensors to autonomously attach and detach a sling cable from cargo, using laterally-arranged rotors to lift and navigate the cargo to a target location without human assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operation is used to attach and detach sling cable, then ease of operation is maintained through simple mechanical processes, but productivity is reduced due to labor-intensive ground crew requirements
Solution Approach 1:
The attachment device enables the UAV to automatically attach and detach the sling cable without requiring ground crew intervention. The system performs the attachment function itself by positioning the UAV below the cargo, engaging the cable with the attachment device, and lifting off autonomously, thereby eliminating manual labor and improving productivity
Solution Approach 2:
The patent replaces the manual mechanical attachment process with an automated system that uses the UAV's positioning capability and electronically-controlled attachment device. The mechanical action of ground crew manually connecting the cable is substituted by the automated engagement mechanism combined with UAV flight control
2Productivity
If UAV autonomously attaches and detaches sling cable, then productivity is improved through automated operations, but device complexity increases due to electronically-controllable attachment mechanisms
Solution Approach 1:
The attachment device is designed to perform multiple functions: it serves as both the mechanical connector for the sling cable and the actuation mechanism for automated engagement. The same device structure that attaches the cable also incorporates the electronic control capability, reducing the need for separate complex subsystems and mitigating overall device complexity while maintaining automated operation
3Reliability
If initial operating height is less than cable length, then safety is improved by preventing cargo support during takeoff, but flight time increases due to additional elevation phase
Solution Approach 1:
The UAV performs the attachment of the sling cable to the attachment device before taking off and elevating to the operational height. By completing the attachment action in advance while on the ground or at low altitude, the system ensures the cargo is securely connected before the lifting phase begins, maintaining safety while minimizing the duration of the elevation process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient, automated transportation of sling-loaded cargo, reducing the need for manual labor and allowing for remote control and contingency operations, enhancing the reliability and efficiency of cargo transport.
Implementation Method 1
operating at least four laterally-arranged rotors to cause the UAV to take-off and navigate to (i) a position within a predetermined area above the cargo and (ii) an initial operating height
Data Source
AI summary
Example methods and systems for coupling and controlling transport of cargo using an unmanned aerial vehicle (UAV) are provided, comprising coupling at least one electronically-controllable attachment device positioned on an underside of the UAV to a sling cable, the sling cable being secured to the cargo. The UAV flies to a predetermined area above the cargo, and responsive to determining that the UAV is positioned within the predetermined area, the UAV elevates above the initial operating height to lift the cargo and navigates to a target location.