Parachute Ring Release Assembly That Prevents Stitching Peel
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Solution Overview
Problem
Existing ring release systems, such as the 3-ring release system, face issues with attachment stitching peeling under high tension forces and difficulty in routing large-diameter cords through tightly woven base webbing, leading to inefficient and unreliable separation of coupled objects.
Innovation Solution
The proposed ring release system incorporates a riser with webbing, featuring a first and second release ring coupled via front webbing, a retaining ring with back webbing stitched to the riser, and a locking cord mechanism with keeper-loops to secure the release rings close to the base webbing, preventing peeling and distributing tension forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If attachment stitching is used to secure rings to webbing, then the release system can be assembled and function, but the stitching peels under high tension forces leading to failure
Solution Approach 1:
The patent introduces a rigid plate as an intermediary component between the rings and the webbing. The rings are secured to the plate via stitching, and the plate is then attached to the webbing, distributing tension forces across a larger area and preventing stitching peel-off that occurred in direct ring-to-webbing attachments.
Solution Approach 2:
The release system combines multiple materials with different properties: rigid plate (provides structural stability), webbing (provides flexibility and strength), and stitching (provides connection). This composite structure allows each material to contribute its optimal properties, with the rigid plate preventing stitching failure under tension.
2Ease of operation
If large-diameter cords are routed through tightly woven base webbing, then the locking mechanism can function, but routing becomes difficult and time-consuming
Solution Approach 1:
The rigid plate serves as an intermediary structure with pre-formed openings or attachment points that facilitate easy routing of large-diameter locking cords, eliminating the need to force cords through tightly woven webbing and significantly reducing assembly time.
3Device complexity
If release rings are not secured close to the base webbing, then the system has simpler construction, but the rings peel away under tension reducing release effectiveness
Solution Approach 1:
The rigid plate acts as a mediator that anchors the release rings in a fixed position close to the base webbing. The plate's rigidity prevents ring migration under tension, ensuring reliable release effectiveness while maintaining relatively simple construction through the use of a single plate component.
4Device complexity
If tension forces are concentrated at single attachment points, then the structure is simpler, but the attachment stitching fails under high tension
Solution Approach 1:
The attachment system is segmented into multiple components: the rigid plate divided into multiple attachment points, each securing rings via separate stitching patterns. This segmentation distributes tension forces across multiple stitching lines and plate attachment points, preventing failure at any single point while maintaining structural simplicity.
Data Source
AI summary
A ring release system is configured to releasably couple a parachute to a payload. The ring release system may comprise a series of release rings affixed to a riser. At least one release ring has an associated retaining ring that surrounds the riser and is affixed to the riser on a back side. The retaining ring prevents stitching securing the release ring from being placed in peel when under stress, improving the reliability of the ring release system.