Shape Memory Composite Antenna for Compact Satellite Deployment
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Solution Overview
Problem
Conventional antennas for small satellites are rigid and limited in size, making it difficult to stow them during launch and deploy them efficiently in orbit, especially when satellite orientation is unpredictable.
Innovation Solution
Utilizing shape memory composite (SMC) materials to construct antennas that can dynamically deform from a stowed to a deployed configuration without external intervention, incorporating conductive elements for functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional rigid antennas are used, then antenna functionality is maintained, but stowage during launch becomes difficult
Solution Approach 1:
The patent applies dynamics by transitioning the antenna from a static rigid structure to a dynamic deployable structure. The antenna elements are configured to be collapsible along the satellite's longitudinal axis during launch, then deployable to operational configurations in orbit, allowing the same structure to adapt to different operational states (stowed vs. functional).
Solution Approach 2:
The patent implements nesting by collapsing the antenna elements into a compact configuration that fits within the limited space of a small satellite during launch. The antenna structure is designed to nest within the satellite body or alongside other components, similar to how nested dolls occupy minimal space when collapsed.
2Quantity of substance
If antenna size is reduced for small satellites, then satellite mass is reduced, but beam pattern becomes compromised or narrowed
Solution Approach 1:
The patent uses dynamics to allow the antenna to achieve its full operational size and optimal beam pattern once deployed in orbit, while maintaining a compact stowed configuration during launch. The antenna elements can extend to their full length and proper spacing, ensuring reliable omnidirectional or directional communication performance when needed.
Solution Approach 2:
The patent applies segmentation by dividing the antenna into multiple deployable elements that can be stowed compactly but deployed to form the complete antenna structure. This allows the antenna to maintain reduced mass during launch while achieving full functional size and proper beam pattern characteristics when deployed.
3Ease of manufacture
If conventional antennas are made stowable, then launch logistics are improved, but structural complexity increases
Solution Approach 1:
The patent applies dynamics by designing the antenna with movable and collapsible elements that can transition between stowed and deployed states. This dynamic capability allows the antenna to be compact during launch while maintaining structural integrity and proper configuration during operation, balancing stowage requirements with functional performance.
Solution Approach 2:
The patent merges the antenna structure with the satellite platform, utilizing the satellite's existing structural elements and deployment mechanisms. By integrating the antenna deployment system with the satellite's overall structure, the patent reduces the need for separate, complex deployment mechanisms while achieving effective stowage and deployment functionality.
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 compact stowage and efficient deployment of antennas, maintaining omnidirectional communication capabilities despite varying satellite orientations.
Implementation Method 1
Exemplary embodiments include an antenna made of shape memory composite material. Exemplary embodiments permit the transition of the antenna from a deformed, stowed shape to a deployed shape.
Implementation Method 2
The shape memory composite material may have a remembered configuration such that the deformed shape retains energy to deploy or transition the shape memory composite to the deployed shape without outside intervention or applied force.
Data Source
AI summary
Systems and methods described herein include collapsible and deployable antenna structures including shape memory composite components.