| The object of this paper is space mesh deployable antennas, whose design was required that the antenna should include the characters of light weight, high folding rate and high unfolding accuracy. A new type of mesh hoop-column deployable antenna was designed based on the hoop-column deployable stucture and combination three-orientation grid cable net formation. It synthesize the advantages not only high precision and well forced of three-orientation net surface, but also simple structure of hoop-column deployable antenna. After analsis of the form-finding cable net structure of cable net reflector antenna, it concludes that the hoop-column deployable antenna with three-orentation grid mesh formation can be achieved accuracy with simple structure.Firstly, the hoop-column deployable antenna was designed and analyzed in this paper, choose the three-orientation grid mesh fomation, and establish the finite element model about this cable net structure of reflector antenna. Secondly, followed by the net surface forming analysis of the cable-net structure, and respectively considering on case of the influence of gravity and without the influence of gravity,the results show that in this two kinds of situations, cable networks can both achieve equilibrium state, the net surface accuracy can meet the design requirements, but the gravity impact on the mesh surface accuracy to a certain extent. Taking into account the deployable antenna light weight and high precision surface structure of network design requirements, analysis of The impact on the accuracy of mesh surface with changing of center pole length. Finally, analyze and calculate the electric performance of mesh reflector antenna, obtained the three- orientation Structural reflector antenna can achieve good electrical performance. |
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