Abstract :
In this paper, a new kind of optimal design model and methodology for large flexible antenna in space with deployed and retracted states are investigated. The purpose is to search for a minimum weight design by means of selecting the cables´ tension and cross-sectional areas of the surround truss whilst satisfying the constraints such as, for deployed state, the precision of reflector surface, material strength, eigenfrequency and variables sides, and, for retracted state, the stowage volume, eigenfrequency, material strength and variables sides. To solve the problem, an improved genetic algorithm (GAs) is proposed and applied to a 17-m-diameter antenna with reasonable result, which is currently under design and manufacturing in China
Keywords :
finite element analysis; flexible structures; genetic algorithms; nonlinear programming; reflector antennas; satellite antennas; 17 m; cable tension; deployed state; eigenfrequency; flexible antenna; genetic algorithm; large cable mesh surface antenna; material strength; minimum weight design; optimal design model; reflector surface; retracted state; space-borne antenna; stowage volume; Aperture antennas; Cables; Earth; Frequency; Genetic algorithms; Helium; Manufacturing; Rockets; Satellites; Space technology;
