Space Capture Vehicle with Elastic Magnetic Alignment
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Solution Overview
Problem
Conventional capture technologies for spacecrafts face challenges in ensuring safety and accuracy during docking, with magnetic methods requiring complex power management, mechanical methods being bulky and heavy, and adhesive methods leading to potential scattering and explosion risks.
Innovation Solution
A space vehicle equipped with a magnetic force generation unit that includes a movable portion with a magnetic attraction region, allowing for flexible alignment and recapture without high-accuracy positioning, using a drive unit and control system to manage magnetic forces for safe and simple capture and separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic capture technology is used, then capture capability is achieved, but high accuracy positioning and complex power management are required
Solution Approach 1:
The patent uses a flexible net made of elastic material to replace rigid mechanical capture structures. The net can deform and adapt to the target object's shape and position, eliminating the need for high-accuracy positioning systems while maintaining capture capability. The elasticity of the net allows it to conform to the target passively.
Solution Approach 2:
The patent replaces electromagnet-based magnetic capture with a passive elastic net system. Instead of using electromagnetic forces that require power supply and precise positioning, the system uses elastic deformation and mechanical tension of the net to achieve capture, significantly reducing device complexity and power requirements.
2Force
If electromagnet is used for magnetic capture, then capture force is generated, but constant power supply is required and power supply equipment size increases
Solution Approach 1:
The patent replaces the electromagnet system with a passive elastic net. The capture force is generated not by electromagnetic attraction but by the elastic deformation and tension of the net material itself. This eliminates the need for power supply equipment entirely, as the net passively generates capture force through its mechanical properties.
Solution Approach 2:
The patent changes the fundamental mechanism from electromagnetic force (requiring energy input) to elastic mechanical force (passive energy storage). By utilizing the elastic modulus and tensile strength of the net material, the system generates capture force without continuous power supply, transforming the energy requirement from active to passive.
3Measurement precision
If high-rigidity mechanical method is used, then accurate positioning is achieved, but device size and weight increase
Solution Approach 1:
The patent employs a flexible net structure instead of rigid mechanical arms or positioning mechanisms. The net's flexibility allows it to adapt to the target object without requiring heavy actuators or precision positioning systems, dramatically reducing the weight of the capture device while maintaining effective capture capability.
Solution Approach 2:
Instead of using rigid structures to enforce precise positioning, the patent inverts the approach by using a flexible structure that passively adapts to the target's position. The net conforms to the target object's location and shape through elastic deformation, achieving capture without the need for active positioning control systems.
4Reliability
If low-rigidity mechanical method or adhesive is used, then capture is achieved, but recapture is not possible and safety risks exist
Solution Approach 1:
The patent enables periodic capture and release cycles through the elastic properties of the net. The net can be stretched to capture the target, held in position through elastic tension, and then released by reducing the tension. This periodic action allows for multiple capture-release cycles, enabling recapture capability that adhesive methods cannot provide.
Solution Approach 2:
The patent uses a dynamic elastic net system that can transition between different states (relaxed, stretched, captured, released) rather than a static adhesive bond. The dynamic nature of the elastic material allows for reversible capture and release, providing versatility and recapture capability while maintaining safety through controlled mechanical interaction.
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 safe and efficient capture and recapture of objects with reduced size and complexity, minimizing collision risks and power requirements, while ensuring high success rates and safety through flexible magnetic alignment and controlled separation.
Implementation Method 1
a magnetic force generation unit configured to generate a magnetic force for attracting the plate-like body
Implementation Method 2
the buffer elastic body configured to absorb an external force and change an orientation of the magnetic attraction region
Data Source
Figure 1(A)~1(C)
Figure 2
Figure 3
AI summary
Provided is a space vehicle that, while having a relatively simple structure that can be reduced in size, can capture an object with no need for high-accuracy positioning. A space vehicle 1 includes: a main body 10; a movable portion 11 configured to reciprocate in an axial direction with respect to the main body 10; and a magnetic force generation unit 20 attached to a distal end of the movable portion 11, and attracts, by a magnetic force, a platelike body 2 attached to an object T in outer space. The magnetic force generation unit 20 includes: a magnet support member 23 attached to a distal end of the movable portion 11 via a buffer elastic body 22; and a plurality of permanent magnets 24 laid on a surface of the magnet support member 23 to form an attraction region C. When a drive unit 30 moves the movable portion 11 away from the main body 10, the attraction region C protrudes from the main body 10 while maintaining a fixed orientation crossing the axial direction, and is changeable in position and/or orientation by the buffer elastic body 22 in the case where an external force is applied.