UAV Payload Attachment Using Vacuum Suction for Versatile Surface Deployment
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Solution Overview
Problem
Existing UAV payload attachment systems are limited in their ability to attach to a wide range of surfaces, including those at various angles, and require complex control systems to maintain payload support, which is beyond the capability of typical commercial off-the-shelf UAVs, and often rely on magnetic properties, restricting surface types and increasing risk in environments like high winds.
Innovation Solution
A UAV system with a payload deployment system comprising a payload attachment system that uses suction, adhesion, and Van der Waals forces, along with motors and a vacuum system to attach payloads to surfaces, allowing for orientation and secure attachment at various angles, and a decoupling system that enables the UAV to move freely while the payload remains attached, and a detachment system that safely releases the payload from the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If magnetic attachment systems are used, then payload attachment is simplified, but surface type restrictions increase and reliability decreases in high winds
Solution Approach 1:
The patent replaces magnetic attachment mechanisms with a vacuum-based mechanical attachment system. The vacuum system uses a vacuum cup that creates suction to adhere to surfaces, eliminating the need for magnetic properties in either the attachment system or the surface. This substitution enables attachment to non-magnetic surfaces while maintaining simplicity in the attachment mechanism.
Solution Approach 2:
The patent changes the attachment mechanism from magnetic force to vacuum suction. By controlling the vacuum level within the vacuum cup, the system can adjust the attachment force to accommodate different surface types and environmental conditions. This parameter change allows the same attachment system to work on diverse surfaces without relying on magnetic properties.
2Reliability
If complex control systems are used to maintain payload support, then payload attachment reliability improves, but device complexity increases
Solution Approach 1:
The vacuum-based attachment system is inherently self-regulating. The vacuum cup automatically maintains attachment through continuous vacuum maintenance, and the system can self-adjust to minor disturbances without requiring complex active control mechanisms. The physical design of the vacuum cup and its mounting allows it to self-correct positioning and maintain attachment force.
Solution Approach 2:
The patent uses a vacuum (negative pressure) system to provide attachment force, which is simpler and more reliable than active mechanical or magnetic control systems. The vacuum maintenance system provides passive, stable attachment without requiring complex sensors or actuators to regulate payload support, thereby reducing overall system complexity while maintaining reliability.
3Manufacturing precision
If payload is fully supported by UAV during attachment, then attachment precision improves, but UAV maneuverability decreases
Solution Approach 1:
The patent segments the payload support function into two parts: the UAV provides positioning and orientation, while the vacuum attachment system provides mechanical support and stabilization. This segmentation allows the UAV to maneuver freely during approach and positioning, then transfers support to the vacuum cup at the landing site, improving both positioning accuracy and maneuverability.
Solution Approach 2:
The UAV performs preliminary positioning and orientation maneuvers to align the payload with the landing site before actual attachment occurs. Once the vacuum cup is positioned and sealed to the surface, the payload is fully supported by the attachment system, allowing the UAV to be released or repositioned independently. This preliminary action sequence enables precise positioning without compromising UAV maneuverability during the attachment 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 secure and versatile attachment of payloads to diverse surfaces, including non-magnetic surfaces at various angles, while allowing the UAV to move freely, improving safety and reducing complexity in control systems, making it suitable for commercial off-the-shelf UAVs.
Implementation Method 1
generating a vacuum by the vacuum system to cause the payload to attach to the landing site
Implementation Method 2
uses suction, adhesion, and Van der Waals forces
Implementation Method 3
uses suction, adhesion, and Van der Waals forces
Implementation Method 4
uses suction, adhesion, and Van der Waals forces
Data Source
AI summary
An embodiment of an unmanned-aerial-vehicle (UAV) system includes a UAV, a payload deployment system, and a payload. The payload deployment system includes a payload attachment system, a payload decoupling system, and, optionally, a payload detachment system. The payload attachment system is configured to attach the payload at a landing site such that the payload is at least partially supported at the landing site. The payload decoupling system is configured to decouple the payload from the UAV such that the UAV can move within a range of motions while the payload remains attached at the landing site. The payload attachment system can be configured to generate a vacuum to cause the payload to attach to the landing site. And the payload decoupling system can include an umbilical that can include a vacuum hose.