Manufacturing method of aramid fiber composite spaceborne helical antenna

Abstract

The invention discloses a manufacturing method of an aramid fiber composite material space-borne helical antenna, which relates to a manufacturing technology of a space-borne helical antenna in the field of aerospace communication. The present invention adopts Kevlar fiber composite material with low density and good dielectric properties, adhesive film layer, and metal mesh layer to make reflective plate, radome and support body, so that the antenna has high reliability and minimizes the weight of the antenna. The transmitted electromagnetic wave and reflected electromagnetic wave part are processed into a whole, which can transmit electromagnetic wave and reflect electromagnetic wave at the same time, and meet the electrical performance requirements. The aramid fiber composite material space-borne helical antenna is manufactured by vacuum, heating, and pressure curing molding processes. The invention also has the advantages of simple structure and simple and easy-to-operate forming process, which makes up for the shortcomings of the traditional space-borne glass fiber reinforced plastic and aluminum alloy combined helical antenna with large weight and poor dielectric performance, and reduces the weight by 20% to 40%. It is especially suitable for the manufacture of various antennas such as inter-satellite data transmission.

Description

technical field [0001] The invention relates to a manufacturing method of an aramid (Kevlar for short) fiber composite material space-borne helical antenna in the field of aerospace communication, and is particularly suitable for the manufacture of various inter-satellite data transmission and other antennas. Background technique [0002] At present, spaceborne helical antennas are mainly composed of glass fiber reinforced plastics and aluminum alloys, which have high weight, poor dielectric properties, and low electrical performance indicators. Kevlar fiber composite materials have high specific strength, specific stiffness, and approximately zero linear expansion coefficient and good impact resistance, fatigue resistance, vibration damping performance, electromagnetic wave transmission performance, heat insulation performance, etc., in aircraft, Satellites and other structures have broad application prospects. The biggest difference between the space-borne helical antenna...

AI Technical Summary

Problems solved by technology

[0002] At present, space-borne helical antennas are mainly composed of glass fiber reinforced plastics and aluminum alloys, which have high weight, poor dielectric properties, and low electrical performance indicators.

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