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A Layout Optimization Design Method for Flat-Panel Satellites with In-Orbit Validation

Shranjeno v:
izdano v:Aerospace vol. 12, no. 8 (2025), p. 707-727
Glavni avtor: Zhang Jiyao
Drugi avtorji: Guo Jinsheng, Luo Liwei, Liu Zhenqian, Li, Huayi
Izdano:
MDPI AG
Teme:
Thermal power
Evolutionary computation
Mathematical models
Algorithms
Design
Layouts
Satellites
Packing problem
Engineering
Mass production
Methods
Feasibility
Satellite constellations
Design optimization
Moments of inertia
Optimization algorithms
Traveling salesman problem
Evolutionary algorithms
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Resumen:Since 2019, Starlink satellites, with their innovative flat-panel design and unprecedented number in orbit, have transformed the traditional satellite industry. Due to their mass production characteristics, flat-panel satellites face a pressing need for satellite layout optimization design (SLOD), particularly for feasible optimization results applicable in engineering. Existing layout optimization algorithms often focus on theoretical optima, computational efficiency, and multi-objective capabilities. Most algorithms are validated exclusively through numerical or CAD-based simulations, leaving their engineering applicability under-reported. This paper establishes a simplified mathematical model of SLOD with consideration for the key features of flat-panel satellites. Furthermore, we propose a differential evolution algorithm that leverages local optima for the layout optimization design of flat-panel satellites. By making targeted and limited improvements to initial human-designed layouts, the algorithm generates practical engineering solutions that significantly enhance the stacking efficiency, mass properties, and thermal distribution of flat-panel satellites. Finally, the effectiveness and engineering feasibility of the algorithm were verified through the design of Longjiang-3, China’s first flat-panel satellite, and the results were also validated in orbit. Compared with the baseline configuration, the optimized layout reduces the principal moment of inertia by 6.6% and the satellite module height by 3.5%. It also achieves a significant improvement in thermal power uniformity across the structure. Overall, the key layout metrics are enhanced by 26%. The present research results provide a theoretical basis and engineering solutions for the SLOD of flat-panel satellites.
ISSN:2226-4310
DOI:10.3390/aerospace12080707
Fuente:Advanced Technologies & Aerospace Database