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Umbrella antenna rib thermal control device

A thermal control technology for umbrella antennas, applied in the field of thermal control devices for umbrella antenna ribs, to achieve the effects of reducing lateral heat leakage, reducing solder joints, and easy layout

Active Publication Date: 2021-06-18
BEIJING INST OF SPACECRAFT SYST ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the present invention provides a thermal control device for umbrella antenna ribs, which can improve system reliability, reduce system weight, reduce system heat leakage, and ensure the consistency of thermal control implementation effects, effectively solving the problem of umbrella antenna rib heat control implementation issues

Method used

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  • Umbrella antenna rib thermal control device
  • Umbrella antenna rib thermal control device
  • Umbrella antenna rib thermal control device

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Embodiment Construction

[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] The invention provides a thermal control device for an umbrella antenna rib, which utilizes the twistability of a flexible cable heater, is arranged on the side of the antenna rib along the length direction of the antenna rib, and can effectively match the heat demand of the variable-section antenna rib, and at the same time Reduces low lateral heat leakage with double layer insulation.

[0031] 1. Flexible cable heater

[0032] The flexible cable heater is a constantan wire plastic-encapsulated insulating layer structure, and its shape is the same as that of ordinary cables, such as image 3 shown. The conductor material is constantan wire with a diameter of 0.1 mm to 0.5 mm, which can be single or double; the insulating layer is single or double cross-linked ethylene-tetrafluoroethylene copolymer, as shown in Figure 4. The flexible cable heater...

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Abstract

The invention discloses an umbrella antenna rib thermal control device. According to the invention, a flexible cable heater is bent into a continuous S shape by utilizing the twisting property of the flexible cable heater, and is arranged on the side surface of an antenna rib along the length direction of the antenna rib; by adjusting the turning radius of the S shape and the distance between turns, the resistance value density of the flexible cable heater can be effectively matched with the heat requirement of the variable cross-section antenna rib, and structural holes, grooves and the like can be conveniently avoided; according to the mode, welding spots of the heating loop can be reduced, the reliability of the heating loop is improved, the template can be realized, and the implementation consistency is ensured; and meanwhile, a double-layer heat insulating layer structure is further utilized, transverse heat leakage is effectively reduced, templating can be achieved, and the consistency of the thermal control implementation effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of spacecraft thermal control, in particular to a thermal control device for umbrella antenna ribs. Background technique [0002] The rib structure of the umbrella antenna is shown in Figure 1, which is characterized by a long rod shape (2.1 meters) and a porous structure. Umbrella antenna ribs require a working temperature range not lower than -70°C. The umbrella antenna is outside the spacecraft cabin, and its temperature will drop to -180°C if no thermal control measures are taken. Therefore, active heating thermal control measures must be taken, and in order to save heating power, it is necessary to use multi-layer thermal insulation components to reduce system heat leakage. The heater and multi-layer thermal insulation assembly constitute the umbrella antenna rib thermal control device. The traditional thermal control device is a film type heating sheet + winding strip multi-layer. [0003] The shap...

Claims

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Application Information

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IPC IPC(8): H05B3/56H05B3/02
CPCH05B3/56H05B3/02
Inventor 张暘王保升姚永田王波兰亚鹏杨居翰周晓云王小雅张少辉杨贵刘国宇陈晓蕾
Owner BEIJING INST OF SPACECRAFT SYST ENG
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