Payload Attachment Device With Spring-Loaded Locking Pin
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Solution Overview
Problem
Current methods for attaching external payloads to UAVs are cumbersome, requiring alignment and fixed location holding during screw tightening, and rely on limited-use locking helicoils that need frequent replacement.
Innovation Solution
A payload attachment device with a housing featuring a retention receptacle for payload pins and a release mechanism with a spring-loaded locking pin assembly, allowing for quick attachment and detachment by rotating a d-ring to retract the locking pin, enabling easy upload and download of payloads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-screw pattern with alignment pins is used for attachment, then payload can be securely mounted to UAV hard point, but alignment and holding payload in fixed location during screw tightening becomes cumbersome and time-consuming
Solution Approach 1:
The patent extracts the alignment and positioning function from the screw attachment process by introducing a separate pin-based retention system. The pin fits into a receptacle to provide alignment and holding, while the screw independently provides secure retention, eliminating the need to hold the payload during tightening.
Solution Approach 2:
The attachment system is segmented into two independent functions: alignment/positioning (handled by pin and receptacle) and secure retention (handled by screw and threaded insert). This separation allows each component to perform its specific function without interference, simplifying the overall operation.
2Reliability
If locking helicoils are used to prevent hardware loosening, then payload attachment security is improved, but frequent replacement is required due to limited cycle usage
Solution Approach 1:
The patent replaces the limited-life locking helicoil with a reusable threaded insert that can withstand repeated attachment cycles. The threaded insert is designed to remain permanently installed in the hard point, eliminating the need for frequent replacement while maintaining secure attachment through the locking screw mechanism.
3Reliability
If traditional screw attachment method is used, then payload can be firmly retained, but upload and download of payload requires time-consuming manual operation
Solution Approach 1:
The pin is pre-installed in the payload and the receptacle is pre-installed in the hard point before the attachment operation. This preliminary positioning allows the screw to be simply inserted and tightened without requiring complex alignment during the actual attachment, significantly reducing upload and download time while maintaining secure retention.
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
Facilitates rapid and secure attachment/detachment of payloads without the need for frequent locking helicoil replacement, enhancing operational efficiency and reducing maintenance costs.
Implementation Method 1
a release mechanism with a spring-loaded locking pin assembly, allowing for quick attachment and detachment by rotating a d-ring to retract the locking pin
Data Source
AI summary
An apparatus and method for attachment of a payload or store to the external surface of an aerial vehicle includes a single point release feature. The apparatus includes an elongated base having a first distal end and a second distal end. A retention receptacle including a hollow tube is disposed adjacent the first distal end and is configured to removably receive and retain the store or payload. In addition, a release receptacle housing a release mechanism assembly is disposed adjacent said second distal end. When the release mechanism assembly is in the closed and locked position, the store or payload is retained to the vehicle via a spring loaded lock pin advanced into the retention receptacle. When the release mechanism assembly is in the open and unlocked position, the store or payload may be disengaged from the vehicle.