Self-Supporting Polymer Thermal Blanket for Spacecraft
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Solution Overview
Problem
Existing space environment protection devices, such as thermal blankets, are costly, time-consuming to install, and have inconsistent thermal insulation efficiency due to their flexible nature and complex attachment requirements, making them inefficient for high-volume space applications.
Innovation Solution
A self-supporting space environment protection device made from a space radiation-resistant polymer-based material, featuring a self-supporting polymer-based body with a low-absorptivity finish on the external surface and a low-emissivity finish on the internal surface, manufactured using additive manufacturing or other processes to provide improved thermal protection and reduced installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional flexible thermal blankets are used, then thermal insulation is provided, but installation complexity increases and insulation efficiency becomes inconsistent
Solution Approach 1:
The patent changes the physical state of the thermal protection material from flexible polymer to rigid polymer, fundamentally altering its mechanical properties. This enables the blanket to maintain its shape and attachment structure independently, eliminating the need for complex external support frameworks and multiple attachment points while ensuring consistent insulation efficiency.
Solution Approach 2:
The patent uses composite material construction with multiple layers including rigid polymer base material, low-emissivity metallic layers (such as aluminum), and optional low-absorptivity white paint layers. This composite structure provides both structural rigidity for self-support and optimized thermal properties for consistent insulation performance.
2Reliability
If flexible thermal blankets with multiple attachments are used, then thermal protection is achieved, but manufacturing cost and installation time increase
Solution Approach 1:
The patent extracts and eliminates the separate support structure and multiple attachment points from the thermal protection system. The rigid polymer blanket itself becomes the structural element that maintains shape and provides attachment, reducing the system to a single integrated component that installs as one piece rather than requiring assembly of multiple parts.
Solution Approach 2:
The patent segments the thermal protection function into distinct layers within the rigid polymer structure: the rigid polymer base providing structural integrity, metallic layers providing low-emissivity thermal reflection, and optional white paint layers providing low-absorptivity solar reflection. This segmentation allows each layer to optimize its specific function while the entire structure installs as a unified component.
3Reliability
If flexible thermal blankets are used, then thermal insulation is provided, but the structure becomes vulnerable to damage and interference with component operation
Solution Approach 1:
The patent changes the mechanical strength parameter of the thermal protection material by transitioning from flexible polymer to rigid polymer. This fundamental parameter change provides inherent mechanical durability, tear resistance, and structural stability, eliminating the fragility and vulnerability to damage that characterize flexible thermal blankets while maintaining thermal insulation performance.
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 solution provides consistent and efficient thermal protection, reduces manufacturing and assembly costs, and simplifies the installation process, making it suitable for high-volume production in space applications while minimizing mass and maximizing thermal performance.
Implementation Method 1
a low-absorptivity finish is applied to the external surface of the self-supporting polymer-based body, the low-absorptivity finish having a solar absorptivity (α) value lower than the space radiation resistant polymer-based material
Implementation Method 2
a low-emissivity finish is applied to the internal surface of the self-supporting polymer-based body, the low-emissivity finish having an infrared emissivity (ε) value lower than the space radiation resistant polymer-based material
Implementation Method 3
Thermal blankets are typically made of flexible polymer-based materials that are very low in thermal conductivity reducing the transfer of thermal energy to the protected structures, components, or mechanisms
Data Source
AI summary
A self-supporting space environment protection device and method of manufacturing the device are provided. The device includes a self-supporting polymer-based body manufactured for installation on a component of a space-based system and composed of a space radiation resistant polymer-based material. The device further includes a low-absorptivity finish applied to an external surface of the self-supporting polymer-based body, the low-absorptivity finish having a solar absorptivity (α) value lower than the space radiation resistant polymer-based material, and a low-emissivity finish applied to the internal surface of the self-supporting polymer-based body, the low-emissivity finish having an infrared emissivity (ε) value lower than the space radiation resistant polymer-based material.