A multi-channel high-speed transmission bus cable for aerospace and its manufacturing method

Abstract

The invention relates to a multi-channel high-speed transmission bus cable used for aerospace, and a manufacture method thereof, and aims to solve the problems of poor structure stability and low compressive strength of an existing transmission bus cable. The manufacture method for the multi-channel high-speed transmission bus cable used for aerospace comprises the following steps of carrying outlapped insulation, sintering insulation, star twisting, weaving, inner sheath extrusion molding, transmission group star twisting, shielding cable manufacture and outer sheath extrusion molding. By use of the manufacture method for the multi-channel high-speed transmission bus cable used for aerospace, the defects that a traditional method needs to determine a lapping pitch through the external diameter of a conductor, lapping bandwidth, lapping band thickness and a target overlapping rate are overcome, the manufactured cable realizes high compatibility among multiple signaling protocols, meanwhile, the problem that attenuation is unstable since low-density tetrafluoroethylene generates laminating deformation during processing can be solved, and the cable can stably work under a severe environment.

Description

technical field [0001] The invention belongs to the technical field of cable production, and in particular relates to a multi-channel high-speed transmission bus cable for aerospace and a manufacturing method thereof. Background technique [0002] With the continuous advancement of aerospace technology, the fields of aerospace technology applications continue to expand, and the functions of spacecraft (spacecraft including satellites, manned and cargo spacecraft, space stations, lunar probes, deep space probes, etc.) The intensity of data processing and the amount of information exchanged by the internal equipment system of the spacecraft are increasing. At present, most of the internal equipment connections of the spacecraft use a single bus for point-to-point transmission. There are mainly six disadvantages caused by this: [0003] 1. The number of existing aerospace transmission bus cables close to the present invention is installed inside the spacecraft, which ultimatel...

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Problems solved by technology

[0010] The problem to be solved by the present invention is to overcome the problems existing in the prior art, and to provide a manufacturing method for multi-channel high-number transmission bus cables used in aerospace. The cables obtained by using the manufacturing method can solve the compatibility between multi-signal protocols, and can Stable work in harsh environments; at the same time solve the problem of unstable attenuation due to lamination deformation of low-density tetrafluoroethylene during cable processing

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