Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

High-temperature-resistant radome and preparation method thereof

A radome, high temperature resistant technology, applied in the field of aerospace composite materials, can solve the problems of low temperature resistance, low flight speed, easy collapse of honeycombs, etc., and achieves improved interface strength, good wave transmission performance, and good impact resistance. Effect

Pending Publication Date: 2021-02-12
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the honeycomb core layer used for radomes is mainly NOMEX paper honeycomb and glass cloth honeycomb, which have low temperature resistance, and the operating temperature is 80-180 ° C. They can only be used as subsonic aircraft with low flight speed and low temperature resistance. The radome application of the supersonic aircraft radome cannot meet the temperature requirements above 400 ℃, and the honeycomb is easy to collapse under the condition of high temperature thermal shock

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-temperature-resistant radome and preparation method thereof
  • High-temperature-resistant radome and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0071] In a second aspect, the present invention provides a method for preparing the high-temperature-resistant radome provided in the first aspect, and the preparation method includes the following steps:

[0072] (1) Hollow sandwich structure is integrally woven by using three-dimensional fiber weaving technology;

[0073] (2) Composite the hollow interlayer structure woven in step (1) with resin to obtain the high temperature resistant radome.

[0074] The step (2) is preferably carried out by RTM (resin transfer molding) molding process. The RTM molding process is a prior art, and the present invention does not describe its process steps in detail. RTM molding process conditions (such as glue injection conditions, curing conditions, etc.) can be determined according to the resin used. For example, when the resin type is polyimide resin, the glue injection can be carried out at a temperature of 260-280 °C and a pressure of 0.6-1 MPa, the curing can be carried out at 200-3...

Embodiment 1

[0080] Embodiment 1 provides a hollow sandwich structure radome. The radome is made of a hollow sandwich structure woven by quartz fibers and polyimide resin; the hollow sandwich structure includes an upper fiber panel and a lower fiber panel, and the upper fiber panel and the lower fiber panel are connected by quartz fibers. Hollow core layer; the quartz fiber of the hollow core layer presents an 8-shaped shape in space; the ground warp density of the hollow sandwich structure is 12 threads / cm, the pile warp density is 10 threads / cm, and the weft yarn density is 15 threads / cm; the thickness of the surface layer is 0.6 mm, the thickness of the core layer is 4.8mm, and the total thickness of the hollow sandwich structure is 6mm.

[0081] The preparation method comprises the following steps:

[0082] The hollow sandwich structure is integrally woven by using three-dimensional fiber weaving technology.

[0083] Composite molding of hollow sandwich structure and resin by RTM mol...

Embodiment 2

[0087] Embodiment 2 provides a hollow sandwich structure radome. The radome is made of a hollow sandwich structure woven by quartz fibers and polyarylene resin; the hollow sandwich structure includes an upper fiber panel and a lower fiber panel, and the upper fiber panel and the lower fiber panel are connected by quartz fibers to form a hollow Core layer; the quartz fiber of the hollow core layer presents a figure-eight shape in space; the hollow sandwich structure has a ground warp density of 20 threads / cm, a pile warp density of 15 threads / cm, and a weft yarn density of 20 threads / cm; the thickness of the surface layer is 0.8mm at the top and bottom. , the thickness of the core layer is 5.0mm, and the hollow sandwich structure is 6.6mm.

[0088] The preparation method comprises the following steps:

[0089] The hollow sandwich structure is integrally woven by using three-dimensional fiber weaving technology.

[0090] Composite molding of hollow sandwich structure and resin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
heightaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-temperature-resistant antenna housing and a preparation method thereof. The high-temperature-resistant radome is formed by compounding a hollow sandwich structure formed by weaving fibers with resin or a resin system. The hollow sandwich structure comprises an upper-layer fiber panel and a lower-layer fiber panel, and the upper-layer fiber panel and the lower-layerfiber panel are connected through fibers to form a hollow core layer; and the fibers of the hollow core layer are 8-shaped in spatial form. The preparation method comprises the following steps: (1) integrally weaving a hollow sandwich structure by utilizing a three-dimensional fiber weaving technology; (2) carrying out composite molding on the hollow sandwich structure woven in the step (1) and resin to obtain the high-temperature-resistant radome. Due to the fact that the hollow interlayer structure is of an integrated structure, the mechanical property of the radome is slightly reduced at high temperature after the radome is impregnated with high-temperature-resistant resin, the problem of debonding with an upper panel and a lower panel is avoided, and the radome is suitable for formingof supersonic aircraft broadband radome components.

Description

technical field [0001] The invention relates to the technical field of aerospace composite materials, in particular to a high-temperature-resistant radome and a preparation method thereof. Background technique [0002] The existing honeycomb sandwich structure radome is formed by bonding the upper and lower panels and the core layer honeycomb by adhesive film bonding. At present, the honeycomb core layer used for radomes is mainly NOMEX paper honeycomb and glass cloth honeycomb, which have low temperature resistance, and the operating temperature is 80-180 ° C. They can only be used as subsonic aircraft with low flight speed and low temperature resistance. The radome application of the supersonic aircraft radome cannot meet the temperature requirements above 400 ℃, and the honeycomb is easy to collapse under the condition of high temperature thermal shock. Contents of the invention [0003] The first object of the present invention is to provide a high temperature resista...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42H01Q1/28
CPCH01Q1/422H01Q1/28
Inventor 梁垠唐培毅徐亮兰天郭世峰
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com