Novel One-Layer-Cable-Net Antenna with High Surface Accuracy

Wu, Zhangming; Hao, Li

doi:10.2514/1.a35225

Cited by 2 publications

(1 citation statement)

References 35 publications

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“…A structural design method is proposed to improve the surface accuracy and the new shape adjustment method is investigated to reduce the shape distortion of the cable network structure (Yuan et al , 2019; Yuan and Jing, 2021). A novel design concept of one-layer cable net is proposed and analyzed (Wu and Li, 2022). Unfortunately, due to the thermal load of space environment, the shape accuracy of front cable net will become worse, resulting in the poor working performance of antennas.…”

Section: Introductionmentioning

confidence: 99%

Numerical calculation of inchworm actuator reliability: effect of space temperature and material parameters

Dong

Li²,

Wang³

et al. 2022

AEAT

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Purpose The inchworm actuator is widely applied in space industry. One of the major issues in space instrumentation is the reliability, especially under space thermal load. The purpose of this paper is to present a numerical calculation method for the inchworm actuator reliability with considering the effect of space temperature. Design/methodology/approach First, the structure of designed inchworm actuator is introduced, and the main failure reason is analyzed. Then the wear model is proposed with considering the space temperature, and an experiment device is designed to verify the wear model. Finally, the reliability calculation method is developed based on the working principle of the inchworm actuator. Findings The numerical calculation method can be applied to calculate the reliability of the inchworm actuator with considering the space temperature. And the results provide a new perspective to discuss the influences of the temperature and driving voltage on the reliability of inchworm actuators. Originality/value This work presents a reliability calculation method of inchworm actuators with considering the space temperature.

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Section: Introductionmentioning

confidence: 99%

Numerical calculation of inchworm actuator reliability: effect of space temperature and material parameters

Dong

Li²,

Wang³

et al. 2022

AEAT

View full text Add to dashboard Cite

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Analytical method for computing assembly errors in modular antenna during on-orbit assembly

Dong

Li²,

Zheng³

et al. 2023

Aeronaut. j.

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To meet the increasing communication demands, the satellites need to be equipped with the high-accuracy and large-aperture antennas. One of the effective methods to construct the modular antennas with ultra-high accuracy and ultra-large aperture is on-orbit assembly technology. During the on-orbit assembly missions, the assembly error is a key factor to affect the surface accuracy of the modular antennas. This paper studies the node design of each module and the assembly error analysis of the modular antennas. A design method of the module nodes is presented with consideration of the assembly gap between two modules. Meanwhile, a soft connection mechanism is designed to ensure the mobility among the assembly modules. To investigate the transmission law of the assembly errors, an analytical model of assembly error is derived based on the exponential product method. In order to establish the deformation surface with rotation and displacement assembly errors, an error ball concept is proposed by the analytical model. To decrease the assembly errors, the actuators are installed among some modules. Moreover, an adjustment method is proposed to obtain the adjustment amounts of actuators. Finally, the correctness of analytical model and the effectiveness of the adjustment method are demonstrated by the numerical simulations.

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Novel One-Layer-Cable-Net Antenna with High Surface Accuracy

Cited by 2 publications

References 35 publications

Numerical calculation of inchworm actuator reliability: effect of space temperature and material parameters

Numerical calculation of inchworm actuator reliability: effect of space temperature and material parameters

Analytical method for computing assembly errors in modular antenna during on-orbit assembly

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