Deployable 3D Debris Capture Assembly for Angle-Independent Impact Absorption
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Solution Overview
Problem
Current space debris management systems, such as the Whipple Shield, are limited by their two-dimensional configuration, which is less effective against space debris fragments due to reliance on the angle of incidence, and there is a need for more efficient methods to capture and mitigate space debris in low Earth orbit.
Innovation Solution
A deployable three-dimensional space debris capture system with an outer and inner assembly, featuring a separation gap filled with gas or foam, and inner members arranged at angles to form a grid-like structure, providing multiple layers for debris impact and absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a two-dimensional space debris protection system (Whipple Shield) is used, then the structure is simple and easy to manufacture, but the capture rate of space debris fragments is reduced due to dependence on angle of incidence
Solution Approach 1:
The patent transitions from a two-dimensional Whipple Shield configuration to a three-dimensional deployable system with outer and inner membranes separated by a gap filled with foam or gas. This dimensional enhancement creates multiple interaction layers for debris fragments, reducing dependence on angle of incidence and improving capture rate while maintaining manufacturing feasibility through modular deployment structures
2Reliability
If a three-dimensional space debris capture system with multiple layers is deployed, then the capture rate of debris fragments is enhanced, but the device complexity increases
Solution Approach 1:
The system employs dynamic deployment mechanisms where the outer and inner membranes can be deployed from a compact stowed configuration to an expanded operational configuration. The separation gap between membranes is created through deployable structures that can be activated in orbit, allowing the complex three-dimensional structure to be transported efficiently and then expanded when needed, thus managing device complexity while maintaining enhanced capture capabilities
Solution Approach 2:
The three-dimensional capture system is divided into separable components including outer membrane assemblies, inner membrane assemblies, and deployment mechanisms. This segmentation allows each component to be manufactured, tested, and deployed independently, reducing overall system complexity while maintaining the effectiveness of the multi-layer debris capture structure
3Volume of moving object
If the outer membrane and inner membrane are placed close together, then the structure is compact, but the separation gap is insufficient to distribute impact energy effectively
Solution Approach 1:
The patent introduces an intermediary medium (foam or gas) filled in the separation gap between the outer and inner membranes. This intermediary serves multiple functions: it maintains the structural separation between membranes to ensure adequate impact energy distribution, provides cushioning and energy absorption capabilities, and allows the membranes to be positioned optimally for debris capture while managing the overall volume of the system
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
The system effectively captures and mitigates space debris by distributing the impact energy across multiple layers, reducing the dependence on the angle of incidence and enhancing the capture rate of debris fragments.
Implementation Method 1
a dispensing system configured to dispense material into the separation gap to apply an outward force and expand the outer assembly into the deployed state
Implementation Method 2
The system effectively captures and mitigates space debris by distributing the impact energy across multiple layers
Data Source
AI summary
Space debris capture systems include an outer assembly and an inner assembly. The Outer assembly includes an outer membrane and an inner membrane, where, in a deployed state, the outer membrane is separated from the inner membrane by a separation gap. The inner assembly is arranged within the inner membrane of the outer assembly. The inner assembly is formed of a plurality of sheets of material arranged at a plurality of orientations relative to the inner membrane and define a plurality of cells within the outer assembly when in the deployed state. A first group of the cells are defined within surfaces of the plurality of sheets of material and a second group of cells are defined between the surfaces of the inner assembly and an inner surface of the inner membrane.