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

Yang, Guigeng; Tang, Aofei; Yuan, Zhenyi; Yang, Zhenchao; Li, Shujuan; Li, Yan

doi:10.1109/access.2020.2993813

Cited by 10 publications

(3 citation statements)

References 23 publications

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“…A design method that only relies on the uniformity of tension to obtain thermal stability does not consider the structural deformation caused by the thermal environment, which is also related to the material properties and geometric configuration of the structure. Based on this, Yang et al [6] designed the cross-sectional area of each cable element under the constraint that the overall mass of the cable element is constant. Numerical simulations show that the surface accuracy of the cable net is not affected by temperature.…”

Section: Introductionmentioning

confidence: 99%

Active adjustment of space-borne cable-net antenna via a two-way shape memory alloy spring

Zhang¹,

Zhang²,

He³

et al. 2023

Smart Mater. Struct.

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In extreme space environments with alternating and uneven temperature variations, the surface accuracy of cable-net antennas deteriorates significantly, thereby inducing a periodic failure or a significant deviation in the electrical performance. This is because of the lack of effective methods for controlling the surface shape during the service of the cable-net antenna. In this study, a method based on "two-way memory spring" is proposed to actively control the surface of a cable-net antenna. Herein, first, an electro-thermo-mechanical model of the shape memory alloy spring is deduced by combining the intrinsic model of the two-way shape memory effect and the resistance property of the shape memory alloy. Subsequently, a principle prototype is developed, and experiments related to active control are conducted to confirm the feasibility and effectiveness of the proposed method.

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Section: Introductionmentioning

confidence: 99%

Active adjustment of space-borne cable-net antenna via a two-way shape memory alloy spring

Zhang¹,

Zhang²,

He³

et al. 2023

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Guo et al proposed a thermal compensation and precompensation design for an antenna and carried out a prestressed design according to the temperature load [7]. Yang et al designed a typical AstroMesh reflector structure to stabilize the surface shape and proposed a method to precontrol the in-orbit thermal deformation of the grid reflector to reduce the thermal deformation of the reflector in the entire temperature range [8]. Nie et al analysed the coupling effect of a truss and cable net in the thermal deformation process, reduced the thermal deformation error by improving the optimization model, and reduced the in-orbit profile error of the reflector by optimizing the thermal structure model [9,10].…”

Section: Introductionmentioning

confidence: 99%

Shape Adjustment and Experimental Study of a Shape Memory Cable (SMC) Structure

Pan

Jiang

et al. 2023

Materials

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Large deployable cable net antennas have attracted extensive attention worldwide because of their simple structure and high storage ratio. The cable net structure is affected by long exposure in a harsh space environment during satellite operation, resulting in large thermal deformation and stress relaxation, which leads to a degradation of antenna performance. To address the thermal deformation of the cable net structure, a shape memory cable (SMC) net structure model was proposed with surface accuracy as the research objective. Specifically, we aimed to utilize its phase transition characteristics to adjust the thermal deformation of cable net structure and improve its surface accuracy. A shape memory cable net structure model with a diameter of 2.2 m was built, and a normal temperature experiment and high- and low-temperature experiments were carried out. High- and low-temperature test refers to environmental simulation testing of shape memory cable net structures under high- and low-temperature conditions. This was done to determine whether the adjustment method for surface accuracy meets the requirements. The results showed that the shape memory alloy wire has a relatively stable ability to adjust the surface accuracy of the cable net structure at room temperature. During temperature cycling, the thermal deformation of the shape memory cable net structure is slight, and the surface accuracy is good. Compared with ordinary cable net structures, the shape memory cable net structure has improved surface accuracy by 44.4% and 45.2% at high and low temperatures, respectively. This proved the effectiveness of the method for adjusting surface accuracy. These experimental results offer guiding significance for engineering applications.

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“…Many scholars have proposed different optimization methods to solve this problem. Yang et al (2020) proposed to stabilize the surface shape by pre-controlling the on-orbit thermal deformation of mesh reflectors and designing a typical AstroMesh reflector structure to reduce the thermal deformation of the reflectors in the whole temperature range. Guo et al (2016) proposed the thermal compensation and pre-compensation design of the antenna, and carried out the pre-stress design according to the temperature load.…”

Section: Introductionmentioning

confidence: 99%

Optimization design of surface accuracy of SMC structure driven by space thermal radiation

Pan

Jiang

Dong

et al. 2022

Journal of Intelligent Material Systems and Structures

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The cable-net structure of large peripheral truss deployable antenna is radiated by the sun and planets for a long period of time, resulting in large thermal deformation and mechanical relaxation, which degrades the service performance of the antenna. In this paper, an optimal control strategy for surface accuracy of shape memory cable-net (SMC) structure under space thermal radiation is proposed. First, the shape memory alloy (SMA) is introduced and integrated with the cable-net structure. The SMC structure with shape memory effect (SME) has the capability to transform the space thermal radiation into a favorable factor for on-orbit adjustment of surface accuracy, in order to realize the on-orbit shape preservation of cable-net antenna in space environment. Then, the space temperature field of cable-net structure is calculated. Finally, the cable-net structure with a diameter of 2 m is simulated, and the influence of the diameter of SMA wire, slope for the relation between the critical stress of phase transformation and inverse phase transformation and temperature on surface accuracy are analyzed. It shows that the implantation of SMA can greatly improve the surface accuracy of cable-net structure in a single thermal cycle.

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

Cited by 10 publications

References 23 publications

Active adjustment of space-borne cable-net antenna via a two-way shape memory alloy spring

Active adjustment of space-borne cable-net antenna via a two-way shape memory alloy spring

Shape Adjustment and Experimental Study of a Shape Memory Cable (SMC) Structure

Optimization design of surface accuracy of SMC structure driven by space thermal radiation

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