Active Magnetic Shielding for Spacecraft Radiation Protection
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Solution Overview
Problem
Existing radiation shielding systems for spacecraft are inadequate as they typically only deflect ion particles in certain directions, leave end areas exposed, and do not effectively shield against long-term exposure to ionizing radiation and magnetic fields, which can damage both human tissues and electronic equipment.
Innovation Solution
A shielding system comprising an outer shield assembly generating a magnetic field through a structure and an inner shield assembly made of ferromagnetic sheets with angled walls, which deflects ion particles in all directions and redirects magnetic fields around the internal chamber, ensuring comprehensive protection from radiation and magnetic field exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If radiation-absorbing material is disposed around the crew and equipment area, then radiation protection is improved, but the weight of the housing increases significantly making it impractical for space exploration
Solution Approach 1:
The patent replaces the mechanical/physical system of radiation-absorbing materials with an electromagnetic field-based active shielding system. Electromagnetic coils generate magnetic fields that deflect charged radiation particles away from the protected area, substituting passive material absorption with active field-based deflection, thereby eliminating the need for heavy shielding housing.
Solution Approach 2:
The patent changes the approach from static material-based shielding to dynamic field-based shielding where electromagnetic field parameters (strength, direction) can be adjusted to optimize radiation deflection. This allows effective radiation protection without the fixed weight constraints of material-based systems.
2Object-affected harmful factors
If known active radiation shielding systems are used, then radiation deflection is achieved, but they only protect in certain directions leaving end areas exposed
Solution Approach 1:
The patent divides the shielding system into multiple electromagnetic coil assemblies positioned at different locations and orientations. Each coil assembly handles deflection in its specific directional zone, and together they provide comprehensive 360-degree protection, including end areas that single-direction systems miss.
Solution Approach 2:
The patent creates a multi-functional shielding system where electromagnetic coils serve multiple purposes: deflecting radiation from various directions, protecting different areas of the spacecraft simultaneously, and providing adaptable coverage that responds to radiation threats from any direction in space.
3Object-affected harmful factors
If known radiation shielding systems are used, then short-term radiation protection is achieved, but they do not effectively shield against long-term exposure to ionizing radiation and magnetic fields
Solution Approach 1:
The patent implements continuous electromagnetic field generation through powered coil assemblies that maintain constant radiation deflection. Unlike passive materials that deplete or saturate, the active system continuously generates deflecting fields as long as power is supplied, providing sustained protection over extended missions without degradation of shielding effectiveness.
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 deflects ion particles and redirects magnetic fields to protect all areas of a spacecraft from ionizing radiation and magnetic field exposure over extended periods, enhancing the safety of both human occupants and electronic equipment.
Implementation Method 1
The outer shield assembly generates a magnetic field through and around the structure
Implementation Method 2
a magnetic field of enough flux density to change the trajectory of such radiation particles from the sun or elsewhere, thereby causing the radiation to be diverted away from the Earth
Implementation Method 3
The inner shield assembly deflects radiation particles away from the interior chamber and re-directs portions of the magnetic field around the interior chamber
Data Source
AI summary
A system is configured to shield an interior chamber of a structure. The system may include a power source, an outer shield assembly operatively connected to the power source and coupled to an outer wall of the structure, and an inner shield assembly surrounding the internal chamber. The outer shield assembly generates a magnetic field through and around the structure. The inner shield assembly deflects radiation particles away from the interior chamber and re-directs portions of the magnetic field around the interior chamber.