Membrane Antenna Deployment With Multi-Axis Extendable Booms
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current space antenna systems are inefficient in terms of volume and mass due to their rigid structures, which limit their ability to deploy multi-directional communication capabilities effectively in confined launch environments and require extensive labor for deployment.
Innovation Solution
A multi-direction deployable antenna system utilizing extendable truss booms and tape springs to unfurl a membrane antenna from a stowed state, allowing for efficient expansion along multiple axes and reducing the depth of the deployed surface, with the antenna membranes being anchored to these structures for optimal deployment and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If rigid structures are used for space antenna systems, then structural stability is improved, but volume efficiency and mass efficiency deteriorate
Solution Approach 1:
The patent employs deployable support structures that transition from a stowed configuration during launch to an extended deployed configuration in space. This dynamic transformation allows the antenna system to achieve a large stable aperture only when needed, while minimizing volume during transport. The support structures include extendable booms and deployable mechanisms that provide structural stability in the deployed state while maintaining compactness during launch.
2Ease of operation
If traditional deployable structures are used, then deployment capability is achieved, but deployment labor and complexity increase
Solution Approach 1:
The antenna system is divided into modular components including multiple deployable support structures, each with its own deployment mechanism. The membrane antenna is segmented into multiple panels that can be deployed independently. This segmentation allows for simplified deployment of individual modules while achieving a complex overall structure, reducing the labor and complexity required compared to deploying a single large structure.
Solution Approach 2:
The patent utilizes nested deployment mechanisms where smaller components are stored within larger structures during stowage. The deployable support structures are nested within the antenna enclosure during launch, and the membrane panels are folded or rolled within the support structures. This nesting approach minimizes stowage volume while enabling straightforward deployment sequences.
3Device complexity
If single-direction deployment is used, then structural simplicity is maintained, but communication versatility deteriorates
Solution Approach 1:
The patent employs multiple deployable support structures that can extend in different directions (first axis and second axis) to support the membrane antenna in various orientations. This multi-directional deployment capability enables the antenna system to achieve versatile communication capabilities including different beam directions and polarization modes, while each individual support structure maintains relative simplicity. The system can deploy along multiple axes to achieve omnidirectional or multi-directional communication coverage.
Data Source
AI summary
An antenna system for space applications provides a membrane antenna with one or more flexible membranes. An antenna enclosure stores the membrane antenna during stowage. One or more first deployable support structures extend along a first axis from the antenna enclosure during deployment, at least a first point of the membrane antenna being operably anchored to a point on the first deployable support structures. Deployment mechanisms are operably anchored at a junction with the first deployable support structures. The deployment mechanisms extend one or more second deployable support structures along a second axis from the first deployable support structures during deployment. At least a second point of the membrane antenna is operably anchored to a point on the second deployable support structures. Extension of the first deployable support structures and second deployable support structures unfurls the membrane antenna along both axes to overlap the junction.