Ejection Assembly Recoil Elimination via Barrier Structure
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Solution Overview
Problem
Existing ejection systems for moveable platforms like UAVs face challenges in reducing net reaction force and recoil, particularly in achieving low mass and enhanced mobility or portability.
Innovation Solution
The ejection assembly incorporates an ejection channel and an anti-recoil channel with a barrier structure that prevents pressure communication between the two channels, utilizing separate ejection and anti-recoil gas pressure pulses to minimize recoil.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional ejection systems are used to eject bodies at high speed, then ejection velocity is improved, but net reaction force and recoil increase
Solution Approach 1:
The patent applies preliminary anti-action by introducing an anti-recoil channel that generates a counteracting force before the ejection body completes its acceleration. The anti-recoil propellant is ignited to produce gas that flows through the anti-recoil channel in the opposite direction to the ejection body, creating a preliminary counter-force that reduces the net reaction force on the platform during ejection.
Solution Approach 2:
The ejection system is segmented into two independent pressure zones separated by a barrier structure: an ejection channel for propelling the ejection body forward, and an anti-recoil channel for generating counteracting force. This segmentation allows independent control of ejection and anti-recoil functions, enabling high ejection velocity while minimizing net reaction force through coordinated operation of the two channels.
2Force
If anti-recoil mechanisms are added to reduce net reaction force, then recoil is reduced, but device complexity increases
Solution Approach 1:
The patent merges the ejection and anti-recoil functions into a single integrated ejection assembly. The ejection channel and anti-recoil channel are positioned adjacently and share common structural elements, including the barrier structure that separates them. This merging approach reduces overall system complexity compared to separate ejection and anti-recoil systems while maintaining the ability to reduce net reaction force.
Solution Approach 2:
The barrier structure serves multiple functions: it separates the ejection and anti-recoil pressure zones, provides structural support for both channels, and acts as a mounting surface for the ejection and anti-recoil propellants. This multi-functionality reduces the number of separate components needed, thereby reducing device complexity while achieving recoil reduction.
3Force
If separate ejection and anti-recoil channels are used, then recoil control is improved, but mass of the system increases
Solution Approach 1:
The ejection and anti-recoil channels are arranged in a nested or adjacently integrated configuration within the ejection assembly, sharing common structural boundaries and support elements. The barrier structure acts as a shared wall between the two channels, eliminating the need for separate external housings and reducing overall system mass while maintaining effective recoil control.
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
This configuration significantly reduces the net reaction force and recoil of the ejection assembly, allowing for more efficient and controlled ejection of bodies with reduced impact on the platform's stability and mobility.
Implementation Method 1
an ejection activation mechanism housed within the barrier structure adjacent the first interface boundary, operable to initiate, in response to receiving an ejection signal, combustion of ejection propulsion material contained in an ejection capsule placed adjacent the first interface boundary; wherein combustion of the ejection propulsion material produces the ejection gas pressure pulse
Implementation Method 2
an anti-recoil activation mechanism housed within the barrier structure adjacent the second interface boundary, operable to initiate, in response to receiving an anti-recoil signal, combustion of anti-recoil propulsion material contained in an ejection capsule placed adjacent the second interface boundary; combustion of the anti-recoil propulsion material produces the anti-recoil gas pressure pulse
Implementation Method 3
the barrier portion prevents pressure communication between the ejection gas pressure pulse in the ejection channel and the anti-recoil gas pressure pulse in the anti-recoil channel
Data Source
AI summary
An ejection assembly for ejecting an ejection body comprises an ejection channel and an anti-recoil channel; a barrier structure having a first interface boundary and a second interface boundary, including a barrier portion between the first interface boundary and the second interface boundaries; an attachment mechanism for fastening the barrier structure between the ejection channel and the anti-recoil channel; an ejection activation mechanism housed within the barrier structure adjacent the first interface boundary, to initiate ignition of ejection propulsion material contained in an ejection capsule placed adjacent the first interface boundary; and an anti-recoil activation mechanism housed within the barrier structure adjacent the second interface boundary, to initiate the ignition of anti-recoil propulsion material contained in an ejection capsule placed adjacent the second interface boundary.