Spatial five-equal partition reflecting face unit of FAST (five-hundred-meter aperture spherical radio telescope)

Abstract

The invention discloses a spatial five-equal partition reflecting face unit of an FAST (five-hundred-meter aperture spherical radio telescope). The spatial five-equal partition reflecting face unit of the FAST comprises a double-layer frame carrier. The double-layer frame carrier is integrally shaped in a triangle. Each layer of the frame carrier is formed by a plurality of triangular structure units. The triangular structure units are formed by connecting support rods via joint balls. Every edge of an upper layer of the frame carrier is partitioned into five equal partitions. Every edge of a lower layer of the frame carrier is partitioned into four equal partitions. Web diagonal bracings are arranged between the two layers and are connected to the joint balls. The upper layer of the frame carrier serves as a base seat and is provided with a plurality of triangular panel subunits. The panel subunits are fixedly mounted on the support rods and the joint balls of the upper layer of the frame carrier via joint support devices. Support heights of the panel subunits can be adjusted by the joint support devices. The support rods, the joint balls, the web diagonal bracings and the panel subunits are made of aluminum alloy.

Description

technical field [0001] The invention relates to a FAST radio telescope reflector unit, which is a component of the radio telescope reflector. Background technique [0002] FAST is the abbreviation of Five-hundred-meter Aperture Spherical radio Telescope (Five-hundred-meter Aperture Spherical radio Telescope). Under Construction. This project uses the Dawodang natural karst depression as the site of the telescope to build the world's largest single-aperture radio telescope. [0003] The reference surface of the FAST active reflector is a spherical surface with a diameter of 500m and a radius of 300m, which is composed of a main support structure, an actuator and a reflector unit. The main support structure of the active reflector consists of ring beams, lattice columns, lattice column foundations, main cable nets, and down cables. The main cable network is a geodesic triangular mesh. Reflecting surface units are installed on the main cable net, with a side length of about...

AI Technical Summary

Problems solved by technology

In the early stage, traditional design concepts were mainly used to develop some reflector units with different structures, such as: single-layer steel-backed reflector units, which have large deformation and weight; string-branched pre-tensioned steel-backed reflector units, This kind of unit has large deformation and poor stability; the angle steel is bolted to the reflective surface unit of the space steel back frame, and the installation efficiency of this unit is low, the weight is large, and the anti-corrosion performance is poor

None of the above traditional types can meet the requirements of FAST

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