Rollable and accordian foldable refractive concentrator space solar array panel
A rollable and accordion foldable refractive lens concentrator flexible solar array blanket structure assembly for a spacecraft/satellite application consisting of at least one or more rows of electrically interconnected solar cells and at least one or more rows of deployable elongated refractive lenses elevated and aligned from the top surface of the solar cells. The entire blanket assembly, inclusive of lenses and solar cell substrates, kinematically deploys by unrolling or unfolding the assembly for its stowed package configuration, and the final tensioning of the blanket assembly produces an aligned assembly where the solar cell substrate subassembly and the lens subassembly are coplanar. Deployment of the integrated blanket assembly (with refractive lenses) is directly coupled through the unrolling or the accordion unfolding deployment kinematics of the concentrator blanket assembly.
1. A space deployable solar array panel comprising a rollable, flexible structure that forms a cylindrical package for stowage and a longitudinal, substantially rectangular planar structure upon deployment, wherein said cylindrical package is configured to store elastic energy such that, upon unrolling deployment, the release of said elastic energy positions said solar array panel into a taunt, aligned, and fully functional deployed configuration;
further comprising a top surface, a bottom surface opposite said top surface, two ends, and two open sides, wherein a first end of said two ends comprises a tip end, wherein a second end of said two ends comprises a root end opposite said tip end, wherein said bottom surface is connected to both said root and said tip, and wherein said top and said bottom surfaces are mutually connected by an elastic structural system, wherein said elastic structural system provides structural alignment and support of said solar array panel in said deployed configuration;
further comprising:
a. A solar blanket assembly, wherein said solar blanket assembly defines said bottom surface of said solar array panel, wherein said solar blanket assembly is comprised of a flexible substrate supporting an array of solar cells, and
b. A flexible refractive lens assembly, wherein said refractive lens assembly defines said top surface of said solar array panel, wherein said refractive lens assembly comprises a set of flexible lenses supported by two or more supportive frames, wherein said refractive lens assembly is spatially offset from said solar blanket assembly by said elastic structural system such that optimal concentration of solar radiation upon said array of solar cells is achieved.
2. A deployable solar array panel as in claim 1 wherein said elastic structural system is rigidly attached to said solar blanket assembly, and wherein said elastic structural system is rigidly congruent with at least one of said two or more supportive frames of said refractive lens assembly to create a lens assembly support system.
3. A deployable solar array panel as in claim 2 further comprising an inline cabling system, wherein said inline cabling system attaches to one supportive frame of said lens assembly support system at said tip end and another supportive frame of said lens assembly support system at said root end, thereby providing inline tension to said refractive lens assembly.
4. A deployable solar array panel as in claim 2 further comprising a continuous inline cabling system, wherein said continuous inline cabling system spans said solar array panel from root to tip, aligning and supporting each of said supportive frames, wherein at least one of said supportive frames is a sliding frame, wherein said sliding frame is free to slide along the continuous inline cable, said wherein said sliding frame is attached to one of said two ends by a low tension cable, thereby providing inline tension while allowing for thermal expansion and contraction of refractive lens assembly.
5. A deployable solar array panel as in claim 2 wherein said elastic structural system comprises two or more rows of elastic structural elements, wherein each row of said two or more rows is congruent with one of said supportive frames of said refractive lens assembly, wherein each row is connected to the succeeding row by compression rods, and wherein said compression rods maintain spacing between said rows while providing structural support for said refractive lens assembly.
6. A deployable solar array panel as in claim 5 wherein one of said supportive frames is a sliding frame, wherein said sliding frame is free to slide along said compression rods, wherein said sliding frame is attached to one row of said two or more rows of elastic structural elements by a low tension cable or spring, thereby providing inline tension while allowing for thermal expansion and contraction of said refractive lens assembly.