FAST telescope perforated reflective surface unit and perforating method
A technology of reflecting surface and panel unit, applied in the field of accessories for giant radio telescopes, can solve the problems of unit deformation and weight, low installation efficiency, poor corrosion resistance, etc., and achieve the effect of reducing the hole area and increasing the reflection efficiency.
Inactive Publication Date: 2016-09-21
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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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
Method used
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[0020] The specific embodiment of the present invention will be described with reference to the accompanying drawings.
[0021] Such as figure 1 As shown, the open-hole reflector unit includes two parts: the back frame unit and the panel unit; the upper layer is the panel unit, and the lower layer is the back frame unit. The back frame unit adopts a triangular aluminum alloy bolt ball space grid structure.
[0022] The triangular aluminum alloy bolt ball space grid structure is specifically: the triangle means that the projected plane view is a triangle. Aluminum alloy means that the reflective surface unit involved is made of aluminum alloy. The rods of the back frame unit are 6061-T6, the bolt balls of the back frame unit are 2A12-T42, and the purlins of the panel unit are 6061-T6. The punching aluminum plate adopts 5052. The bolt ball space grid means that the structure of the reflective surface unit involved is a bolt ball space grid rather than a welded space grid. Fur...
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Abstract
The invention relates to a part of a giant radio telescope, and specifically relates to a FAST telescope perforated reflective surface unit and a perforating method. The upper layer is a panel unit, and the lower layer is a back rack unit. The back rack unit is of a triangular aluminum alloy bolt sphere space grid structure. The panel unit is composed of a plurality of small panel sub-units. The three vertices of a perforated reflective surface unit are arranged through a connecting device on a reflective surface unit connecting plate on a cable net woven with steel cables, and the three vertices respectively release mobile constraints. The back rack unit and the panel unit are provided with holes. A calculation formula of universal significance is induced according to the needs of observation and in view of factors such as the angle of inclination of the perforated reflective surface unit. A relatively smooth oval is fitted out, the hole area is reduced, and the efficiency of reflection is increased. Through an adjusting device connected between the back rack unit and the panel unit, the surface shape precision of the reflective surface unit can be adjusted.
Description
technical field [0001] The invention relates to an accessory of a giant radio telescope, in particular to a perforated reflecting surface unit of the FAST telescope and a perforating method thereof. Background technique [0002] The full name of the FAST telescope is the Five Hundred Meters Aperture Spherical Radio Telescope (FAST for short), and it is one of the nine national science and technology infrastructures reviewed and determined by the National Science and Education Leading Group. Using the original design of Chinese scientists and the unique terrain conditions of the karst depression in southern Guizhou, my country, a high-sensitivity giant radio telescope with a reflecting surface of 250,000 square meters will be built. As the world's largest single-aperture telescope, FAST will maintain its world-class status in the next 20 to 30 years. The brand-new design idea, coupled with the unique advantages of the site, made it break through the 100-meter engineering lim...
Claims
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Login to View More IPC IPC(8): H01Q15/14H01Q1/12
CPCH01Q1/12H01Q15/14
Inventor 古学东赵保庆赵清朱明王启明
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI