Optical-Structural Integrated Optimization Design of Deployable Beams in OMEGA Space Solar Power Satellite
Publication: Journal of Aerospace Engineering
Volume 32, Issue 6
Abstract
The efficiency of a solar energy collection (SEC) is of great significance to the power generation and overall efficiency of a space solar power satellite (SSPS). The Orb-Shape Membrane Energy Gathering Array (OMEGA) SSPS concept, inspired by the Arbitrarily Large Phased Array (ALPHA) SSPS, is designed for modular assembly, and the spherical condenser is subdivided into many polygons. Deployable beams, surrounding these polygons and acting as a support system, affect not only the SEC efficiency but also the sphere’s RMS structural displacement, mass, eigenfrequency, and shielding fraction for incoming sunlight. This paper subdivided the spherical condenser into hexagons and pentagons organized in modules and carried out a theoretical analysis of the geometric deviations from a sphere. A dynamic analysis in orbit determined the internal force distribution for calculating the RMS value. An integrated optimization model was used that considers RMS, mass, oscillation frequency, and solar shielding fraction. The optimal dimensions of the structural beams for the condenser system were obtained, providing a fundamental structural size for input for further research.
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Data Availability Statement
No data, models, or code were generated or used during the study.
Acknowledgments
This work is supported by the National Natural Science Foundation of China with Nos. 51775404, U1637207, and 51607131; and by Fundamental Research Funds for the Central University with No. JB180410.
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Published In
Journal of Aerospace Engineering
Volume 32 • Issue 6 • November 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Mar 25, 2019
Accepted: Jul 9, 2019
Published online: Aug 26, 2019
Published in print: Nov 1, 2019
Discussion open until: Jan 26, 2020
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