Fusion-Cut Separation Device for Cosmonautic Vehicles
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Solution Overview
Problem
Existing separation devices for cosmonautic vehicles lack a simple and cost-effective configuration for retaining and releasing the separation member, leading to increased manufacturing complexity and costs.
Innovation Solution
A separation device with a pillar-shaped separation member, a swinging support member, an inner case with a fitting hole, and an operation-enabling element that is fusion-cut to release the separation member, allowing for a simple configuration that reduces the load on the operation-enabling element and lowers manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional separation device structure is used, then the separation function is achieved, but the configuration is complex and manufacturing cost is high
Solution Approach 1:
The separation device is divided into distinct functional modules: the outer case, inner case, support member with swinging portion, and operation-enabling element. This segmentation allows each component to be manufactured separately with simpler processes and then assembled, reducing overall manufacturing complexity and cost while maintaining the separation function.
Solution Approach 2:
The operation-enabling element is extracted as a separate, simple component that can be fusion-cut to trigger separation. This extracted element carries only the essential function of enabling separation through electrical cutting, removing unnecessary structural complexity from the main separation mechanism and simplifying manufacturing.
2Strength
If the operation-enabling element supports the inner case and bears the load, then structural strength is sufficient, but the electric power required for fusion-cutting is high
Solution Approach 1:
The load-bearing function is extracted from the operation-enabling element and transferred to the outer case and support member structure. The operation-enabling element is reduced to a simple electrical fuse that only needs to be cut by electrical current, not designed to bear mechanical loads. This dramatically reduces the cross-sectional area and material strength required, thereby reducing the electric power needed for fusion-cutting while maintaining overall structural strength through the outer case and support member.
Solution Approach 2:
The outer case and support member act as intermediary load-bearing structures that transfer the cosmonautic vehicle load away from the operation-enabling element. These intermediaries carry the mechanical load through their structural design, allowing the operation-enabling element to be a thin, low-power fuse that only needs to be electrically cut to initiate separation.
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 the retention and release of the separation member with a straightforward design, reducing manufacturing complexity and costs while minimizing the required electric power for fusion-cutting the operation-enabling element.
Implementation Method 1
an operation-enabling element that supports the inner case in the outer case and that is fusion-cut when an electric current is applied thereto
Data Source
AI summary
A separation device includes: an outer case; a pillar-shaped separation member including an engaging portion; a support member including a swinging portion and an engageable portion, the swinging portion being swingably supported by the outer case, the engageable portion supporting the separation member; an inner case including a fitting hole restricting swinging of the support member; and an operation-enabling element, which supports the inner case and which is fusion-cut when an electric current is applied thereto. When the operation-enabling element is fusion-cut, the inner case is displaced, such that: the engageable portion of the support member detaches from the fitting hole; the swinging portion swings; and the engageable portion moves away from the engaging portion to release the separation member.