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Composite material base for satellite antenna bearing cylinder and preparation method

A composite material, satellite antenna technology, applied in the direction of antenna support/installation device, etc., can solve the problems of low working reliability, low axial stiffness, poor thermal stability, etc. Good thermal stability

Active Publication Date: 2014-03-19
XIAN AEROSPACE COMPOSITE MATERIALS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The base of the bearing tube of existing satellite antennas is generally made of metal materials, which not only increases the negative mass, but also has the disadvantages of low axial stiffness and poor thermal stability in space high and low temperature environments; resulting in low working reliability of satellite antennas

Method used

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  • Composite material base for satellite antenna bearing cylinder and preparation method
  • Composite material base for satellite antenna bearing cylinder and preparation method
  • Composite material base for satellite antenna bearing cylinder and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 , figure 2 , image 3As shown in Fig. 4, the composite material base used for the satellite antenna bearing cylinder of the present embodiment includes a lower base and an upper base installed above the lower base; the lower base includes an upper end cover 1 and a lower end cover 4, the The upper end cap 1 includes a circular upper end cap body 1-1 and a first cone 1-2 with a small upper part and a larger lower part arranged below the upper end cap body 1-1. The lower end cap includes a lower end cap body 4-1 and a set The second cone 4-2 with a large top and a small bottom above the lower end cover body, the upper end cover body 1-1 and the first cone 1-2 are integrated structures, the lower end cover body 4-1 and the second cone The two cones 4-2 have an integrated structure, and a first cylinder 2 is arranged between the upper end cover 1 and the lower end cover 4, and the upper inner wall of the first cylinder 2 is connected to the outer wall of...

Embodiment 2

[0064] This embodiment is the same as Embodiment 1, and the difference is that the angle between the cone surface of the first cone 1-2 and the vertical direction and the angle between the cone surface of the second cone 4-2 and the vertical direction The included angle is 10 degrees.

[0065] The base of this embodiment has the advantages of high axial stiffness, good thermal stability in high and low temperature environments, less negative mass, high modularity, good reliability, and excellent comprehensive performance. The axial modulus is ≥ 100GPa, and the glass transition The temperature is 210℃~220℃, and the quality is 40% lighter than that of aluminum alloy products.

Embodiment 3

[0067] This embodiment is the same as Embodiment 1, and the difference is that the angle between the cone surface of the first cone 1-2 and the vertical direction and the angle between the cone surface of the second cone 4-2 and the vertical direction The included angle is 1 degree.

[0068] The base of this embodiment has the advantages of high axial stiffness, good thermal stability in high and low temperature environments, less negative mass, high modularity, good reliability, and excellent comprehensive performance. The axial modulus is ≥ 100GPa, and the glass transition The temperature is 210℃~220℃, and the quality is 40% lighter than that of aluminum alloy products.

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Abstract

The invention discloses a composite material base for a satellite antenna bearing cylinder. The composite material base comprises a lower base and an upper base arranged above the lower base, the lower base comprises an upper end cover and a lower end cover, the upper end cover comprises an upper end cover body and a big-end-down first cone arranged below the upper end cover body, the lower end cover comprises a lower end cover body and a big-end-up second cone arranged above the lower end cover body, a first cylinder body is arranged between the upper end cover and the lower end cover, the upper base comprises a basic part, the basic part comprises a bottom plate, a top plate and a second cylinder body, the second cylinder body is arranged between the bottom plate and the top plate, and the longitudinal section of the second cylinder body is 'convex'. The invention further discloses a preparation method of the base. Various portions of the base of the satellite antenna bearing cylinder are made of composite materials, and the base has the advantages of high axial rigidity and modularity, fine heat stability in high-low temperature space environment, low negative quality, fine reliability, excellent comprehensive performance and the like.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a composite material base used for a satellite antenna bearing cylinder and a preparation method thereof. Background technique [0002] The base of the satellite antenna bearing tube is an important installation carrier for satellite antenna positioning. Therefore, the base needs to withstand the large overload caused by the complex mechanical environment in the stages of satellite launch, maneuvering, and orbit change; it must also have excellent dimensional stability in the high and low temperature environment of space to ensure the normal operation of the antenna. [0003] The base of the supporting tube of the existing satellite antenna is generally made of metal materials, which not only increases the negative mass, but also has the disadvantages of low axial stiffness and poor thermal stability in space high and low temperature environments; resultin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/12
Inventor 廖英强曾金芳刘小建景宽周伟江方毅徐新山张润阳胡涛李锵李翠云
Owner XIAN AEROSPACE COMPOSITE MATERIALS INST
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