Airdrop Lashing Release Interface With One-Action Pin Actuation
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Solution Overview
Problem
The existing lashing systems for airdrop platforms require significant time and effort to release payloads due to the friction-based D-ring mechanism, often necessitating cutting of lashings, leading to waste and expense in non-training events.
Innovation Solution
A rapid release interface assembly with a movable pin member that engages and releases a loop member on the lashing, allowing all pins to be secured or released simultaneously, eliminating the need for D-rings and simplifying the derigging process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a friction-based D-ring mechanism is used to secure lashings, then the lashing can be held in place, but the release process becomes time-consuming and complex
Solution Approach 1:
The patent transforms the static friction-based D-ring mechanism into a dynamic spring-loaded pin system. The pin is held in a engaged position by spring force and can be rapidly released by overcoming the spring force, enabling quick release while maintaining secure holding during operation.
Solution Approach 2:
The patent extracts the friction-based holding mechanism and replaces it with a positive engagement mechanism using a pin that physically blocks the lashing loop from disengaging. The release function is extracted as a separate action through the handle that moves the pin out of the blocking position.
2Adaptability or versatility
If multiple individual D-rings are used on each lashing, then each lashing can be secured independently, but the release process requires multiple separate actions
Solution Approach 1:
The patent merges multiple separate release actions into a single unified mechanism. The handle is connected to multiple pins through a common linkage system, so that moving the handle simultaneously actuates all pins to release all lashings at once, while each lashing remains independently secureable.
3Loss of time
If a simple pin mechanism is used for rapid release, then release speed is improved, but the securing mechanism becomes less reliable
Solution Approach 1:
The patent designs the release mechanism to rush through the release action quickly by using a handle that directly moves the pin out of the engagement position, minimizing the time the lashing is in an uncertain state. The spring force ensures the pin is rapidly ejected from the lashing loop when the handle is actuated.
Solution Approach 2:
The spring-loaded pin provides beforehand cushioning by maintaining constant spring force on the pin, ensuring it remains firmly engaged with the lashing loop until release is intentionally triggered. This pre-loaded spring force guarantees reliable engagement without requiring additional locking mechanisms.
Data Source
AI summary
An apparatus for rigging and derigging lashings of an airdrop platform with one action includes a rapid release interface assembly. A loop member replaces the D-ring at the one end of a lashing. The rapid release interface system is installed in the space between the platform side rail and panel end members. Pins will slide through the lashing loop members to secure the end of the lashing to the rapid release interface system. With all of the pins on a common drive, the pins are all opened and closed together, or at the same time. In this manner, the one end of the lashing can be secured or released with one action making it faster and easier to derig a payload from an airdrop platform.