Optimization design method for the cable network of mesh reflector antennas considering space thermal effects

Nie, Rui; He, Baiyan; Yan, Shaoze; Ma, Xiaofei

doi:10.1016/j.ast.2019.105380

Cited by 31 publications

(13 citation statements)

References 39 publications

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“…This causes a periodic change in reflector temperature. In this study, it is assumed that the temperature of the whole AstroMesh structure is uniform, and the temperatures of on-orbit antenna structures range from −200 • C to 100 • C [20], [21].…”

Section: Simulation Results and Discussion A Astromesh Cable Nementioning

confidence: 99%

“…Unfortunately, researches on the pre-control of the onorbit thermal deformation of mesh reflectors are very few [18]- [21]. Yang et al [10], [11] proposed equal-tension form-finding methods to improve the shape stability of mesh reflectors, in which the surface shape stability was considered to be dependent on the tension uniformity of the cables.…”

Section: B Related Literaturementioning

confidence: 99%

“…To reduce the range of on-orbit thermal deformation of AstroMesh reflectors, Yang et al [20] proposed a shape pre-adjustment optimization method, in which element lengths of the adjustable cables were properly designed considering space thermal loads. Nie et al [21] provided a pretension optimization approach to minimized the maximal amplitude of the surface shape errors within the temperature range in space.…”

Section: B Related Literaturementioning

confidence: 99%

“…Considering the mesh reflector's good transmittance and weak shielding of sunlight, it is assumed that the temperature of the whole AstroMesh structure is uniform [20], [21] in this work. Generally, when the temperature of the AstroMesh structure changes by t, the cable tensions will change by T c and the node positions will also change accordingly to reach a new equilibrium state.…”

Section: A Thermal Deformation Problem Of Cable Net Structuresmentioning

confidence: 99%

“…For the cable net structures obtained by the existing methods, the equivalent load of the thermal stresses of the cables are always not a set of equilibrium forces. As a result, the thermal stresses of the cables inevitably lead to thermal deformation of the whole cable net structure, and the surface errors of the reflector under extreme high or low temperature conditions are still very large [20], [21].…”

Section: A Thermal Deformation Problem Of Cable Net Structuresmentioning

confidence: 99%

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Surface Shape Stability Design of Mesh Reflector Antennas Considering Space Thermal Effects

et al. 2020

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On-orbit periodic thermal loads degrade the reflector surface accuracy of AstroMesh antennas. To address this problem, a surface shape stability design method is proposed to passively pre-control the on-orbit thermal deformation of mesh reflectors, in which the structural parameters are properly designed to make the internal forces of the whole structure change coordinately and the surface shape of cable-mesh antennas insensitive to thermal loads. First, mathematical models of mechanical-thermal matching (MTM) are established for AstroMesh reflectors, in which an MTM model is developed for the cable net structure and the reflector membrane is equivalent to a cable net structure according to the force balance and thermal deformation coordination relationships. Then, based on the mathematical models, a surface shape stability design strategy is presented for AstroMesh antennas to properly design the cross-sectional dimensions of the cables. Finally, typical AstroMesh reflector structures are designed using the proposed method and simulation results show that the thermal deformations of the obtained AstroMesh reflectors are quite small under the whole temperature range. INDEX TERMS Mesh reflector antennas, thermal loads, surface shape stability, mechanical-thermal Matching (MTM).

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Section: Simulation Results and Discussion A Astromesh Cable Nementioning

confidence: 99%