Metal Hydride Composite Radiation Shielding for Aerospace
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current radiation shielding materials for aerospace and high-altitude applications are heavy, adding unnecessary mass and fuel consumption without providing structural benefits, and existing materials are inadequate for effectively attenuating space radiation.
Innovation Solution
The development of metal hydride-containing composite materials, where a metal hydride is incorporated into a hardenable matrix precursor along with reinforcing materials, forming a solid matrix that enhances radiation attenuation while maintaining structural integrity and reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional radiation shielding materials are used, then radiation attenuation is achieved, but weight increases significantly
Solution Approach 1:
The patent employs composite materials combining boron-rich particles (for neutron absorption), hydrogen-containing materials (for proton radiation shielding), and a polymer matrix. This composite approach achieves effective radiation attenuation across multiple radiation types while maintaining lower density compared to traditional solid shielding materials like lead or concrete, thus resolving the contradiction between radiation protection and weight reduction.
Solution Approach 2:
The shielding composite is designed with spatially distributed functional components: boron particles concentrated in regions requiring neutron attenuation, hydrogen materials positioned for charged particle shielding, and varying matrix compositions. This local optimization allows each region to provide targeted radiation protection while minimizing overall material weight, addressing the contradiction between comprehensive radiation shielding and weight reduction.
2Object-affected harmful factors
If radiation shielding material is added to spacecraft, then radiation protection is improved, but fuel consumption increases due to added mass
Solution Approach 1:
By using a lightweight polymer matrix composite rather than dense traditional shielding materials, the patent reduces the mass of radiation protection systems. This weight reduction directly decreases the fuel required for spacecraft launch and operation, resolving the contradiction between radiation protection and fuel consumption while maintaining effective shielding performance.
3Object-affected harmful factors
If metal hydride is incorporated into matrix precursor, then radiation shielding effectiveness is enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent incorporates metal hydride particles into the polymer matrix precursor before curing, allowing the shielding functionality to be built into the material structure during manufacturing. This preliminary incorporation simplifies the overall process compared to post-manufacturing shielding additions, as the radiation-protection functionality is integrated into the base material rather than requiring separate assembly steps.
Solution Approach 2:
The patent creates a multi-phase composite where metal hydride particles are dispersed within the polymer matrix. This composite structure provides enhanced radiation shielding through the metal hydride's high hydrogen content while maintaining processability through the polymer matrix, achieving improved shielding effectiveness without proportionally increasing manufacturing complexity.
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 composite materials effectively attenuate incident radiation, including neutron radiation, while offering enhanced structural strength and stiffness, making them suitable for aerospace applications without increasing weight, thus addressing the mass and fuel efficiency concerns.
Implementation Method 1
a first type of particle reinforcement comprising a boron-rich particle reinforcement... a second type of particle reinforcement comprising a metal-hydride particle reinforcement
Implementation Method 2
incorporating the metal hydride in the hardenable resin; and curing the hardenable resin to form the radiation-shielding composite material
Data Source
AI summary
Radiation-shielding composite materials and their methods of manufacture. Such methods may include adding a metal hydride to a hardenable matrix precursor, adding a reinforcing material to the hardenable matrix precursor, and hardening the matrix precursor to form a composite material that incorporates the reinforcing material and the metal hydride in a solid matrix. The resulting radiation-shielding composite materials are configured to attenuate incident radiation, and may be used in the construction of panels, laminate structures, buildings, and aerospace vehicles, among others.