Component Separation System With Segmented Ejection Force
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Solution Overview
Problem
Existing component separation systems for vehicles, such as missiles, face challenges in achieving a precise balance between the force applied and the shear strength of shear pins, leading to premature decoupling or failure to eject components due to inadequate force.
Innovation Solution
A component separation system comprising a sleeve with a locking mechanism and a mover that controls the movement of the locking mechanism, using a biasing mechanism and a thrusting mechanism to selectively release and eject a load from an external structure with a controlled force, ensuring reliable decoupling without damaging the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shear strength of the pin is increased to prevent premature decoupling, then the reliability of component retention is improved, but the force required to eject the component increases, potentially causing missile damage
Solution Approach 1:
The ejection force is segmented into two distinct phases: a low-force phase that shears the retention pin, and a high-force phase that ejects the component. This is achieved through the shear pin mechanism that fails at a predetermined low force threshold, allowing the ejection force to be applied separately after retention is already broken
Solution Approach 2:
The retention pin is designed to fail preliminarily at a low force threshold before the full ejection force is applied. This preliminary action of pin failure creates a mechanical advantage where the high-strength retention connection is broken first, enabling safe application of high ejection force without risking structural damage
2Ease of operation
If the shear strength of the pin is decreased to facilitate easier ejection, then the ease of operation is improved, but the component may decouple prematurely during flight, reducing reliability
Solution Approach 1:
The system changes the force parameter dynamically through the shear pin mechanism. The pin is designed with specific shear strength parameters that allow it to withstand high retention forces during flight but fail at a predetermined lower ejection force threshold, effectively transforming the force requirement from a single-value constraint to a two-stage force profile
3Productivity
If the ejection force is increased to ensure component release, then the productivity of the ejection process is improved, but the hazard to the missile structure increases
Solution Approach 1:
The shear pin acts as an intermediary element that mediates between the retention function and ejection function. It absorbs the initial low-force action needed to break the retention bond, allowing the subsequent high-force ejection action to proceed without directly stressing the missile structure. The pin serves as a sacrificial intermediary that protects the main structure from harmful high forces
Data Source
AI summary
A component separation system for separating a load from an external structure according to various aspects of the present invention comprises a sleeve slidingly engaged with the external structure. The sleeve includes an opening and an interior. A locking mechanism, such as a ball or latch, is movably disposed through the sleeve opening between a locked position engaging the external structure and an unlocked position not engaging the external structure. A mover slidingly disposed within the hollow interior of the sleeve controls the movement of the locking mechanism through the opening. Energy excess beyond that required for unlocking the mechanism may provide a thrust to forcibly eject the load from the external structure.