Analyses of a new simplified large deployable reflector structure

International Journal of Antennas and Propagation

Rui

et al. 2019

The combination of a solar array and a communication antenna can reduce the entire mass, physical size, and cost in space applications. Currently, related studies mainly focus on the combination of the two structures on the one flat plate structure (FPS). Compared with the FPS, a paraboloid structure has a lower surface density and higher conversion efficiency. Therefore, a novel space large deployable paraboloid structure with power and communication integration (SSPCI) is proposed and designed in detail, for spacecraft on a sun synchronous earth orbit; it consists of a cable mesh membrane reflector (CMMR), an energy conversion device (ECD), and a three-extensible-rod (TER) pointing mechanism. To achieve the goal of integrating power and communication, the TER pointing mechanism drives the CMMR/ECD to track the sun in the sunshine region or to turn to face the ground station/other target in the Earth’s shadow region. Then, through simulation analyses of the deploying process, static force at a limit orientation, and sun tracking process of the SSPCI, it is proved that the SSPCI is feasible and has satisfactory performance. Finally, deploying experiments of the folded hoop of the CMMR and sun tracking experiments of the TER pointing mechanism on the ground were carried out successfully, which proves that the folded hoop can be deployed successfully with fairly high deploying dependability, and the TER pointing mechanism is feasible for the SSPCI from the mechanism principle and the control mode in space applications indirectly. Moreover, the tracking accuracy of the TER pointing mechanism is estimated to be within ±0.4° although the machining precision of its components is not high.

Section: Description Of Space Large Deployable Paraboloid Structure Wmentioning

confidence: 99%

A Novel Space Large Deployable Paraboloid Structure with Power and Communication Integration

International Journal of Antennas and Propagation

Rui

et al. 2019

“…We proposed a new kind of large deployable space antenna structure in [5] and then improved it in [6], it also has lower surface density. Here we give system design and simulation of such kind of antenna, from deploying ability, to surface precision, and then to antenna performance, so as to reveal its fundamental performances both in mechanical and in electromagnetic.…”

Section: Introductionmentioning

confidence: 99%

System design and simulation of a new space large deployable antenna

2014 International Radar Conference

Chen

2014

Self Cite

Continuous affordability is a new demand for space applications, therefore, some new kinds of lightweight large deployable mesh reflectors are frequently used in recent years. Here we make system design and simulation of a new kind of space large deployable reflector antenna that we proposed recently. System design shows its several superior outstanding advantages. Simulations of deploying ability, surface precision, and antenna performance, all reveal that such kind of deployable antenna has potential foreground in future space applications.

Conceptual design of a new thermal‐electric conversion device in lightweight concentrating solar thermal power system

Rui

Energy Science & Engineering

et al. 2019

Concentrating solar thermal power (CSTP) technology has become a hot issue in the present research because of its high conversion efficiency. However, traditional schemes cannot be widely applied due to their complex structure, low power density, and high cost. In view of this, based on a new type of lightweight cable mesh reflector structure and the Rankine cycle, a new conceptual design of thermal‐electric conversion device in CSTP system is proposed. The process of thermal‐electric conversion is actualized through smart and lightweight structural design; the performance estimation of the device is carried out through focusing performance analysis and thermodynamic analysis; the cycling feasibility is verified through multifield coupling simulation analysis. Compared with the existing thermal‐electric conversion devices, the device proposed in this paper has higher power‐to‐weight ratio. And the power generation system that combines the proposed device with the flexible cable net reflector has the characteristics of lightweight, portability, and small land area, which has a great significance for the popularization and application of distributed layout CSTP system.