Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ablation ground simulation test device and method based on ablation backing amount compensation

A technology of ground simulation and test device, applied in the field of aerospace vehicles, can solve the problems such as the inability to obtain the real-time ablation retreat rate of the surface of the tested model, the inability to obtain the quantitative value of the retreat of the model surface, and the deviation of the environmental state of the test model from the set state, etc. Achieve the effect of reducing the deviation between the nominal test state and the actual test state, enriching scientific experimental data, and improving the ability to maintain accuracy

Active Publication Date: 2020-12-25
CHINA ACAD OF AEROSPACE AERODYNAMICS
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The position of the test model in the ablation ground simulation test system of traditional heat-resistant materials or thermal protection systems is fixed. During the test process, the surface of the material usually undergoes ablation due to high temperature and the boundary retreats, causing the actual surface position of the model to deviate from the determination of the test state. The nominal position at the time, the actual environmental state of the test model deviates from the set state, and the degree of state deviation increases with the increase of ablation retreat
[0005] (2) The ablation ground simulation test system of traditional heat-resistant materials or thermal protection systems usually determines the amount of ablation retreat by measuring the height difference of the specified position of the model before and after the test. During the test, the quantitative value of the retreat of the model surface is usually not available. That is, the real-time ablation retreat rate of the surface of the measured model cannot be obtained

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
  • Ablation ground simulation test device and method based on ablation backing amount compensation
  • Ablation ground simulation test device and method based on ablation backing amount compensation
  • Ablation ground simulation test device and method based on ablation backing amount compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The present invention provides an ablation ground simulation test device based on ablation retreat amount compensation, the device includes an image collector 1, an image processing computer 2, a servo controller 3, a first servo motor 5-1, and a mobile workbench 6 , Mobile worktable movement track 7;

[0064] The mobile workbench 6 is installed on the moving track 7 of the mobile workbench, and is used to carry the tested test model 4;

[0065] The image collector 1 is used to record the test process of the tested test model 4 to obtain continuous video information, and transmit the video information to the image processing computer 2;

[0066] The image processing computer 2 resolves the video information into single-frame RGB images at different times, analyzes and obtains the boundary information of the tested test model in each single-frame RGB image, and according to the boundary information of the tested test model in the single-frame RGB images at different time...

Embodiment 2

[0099] Such as figure 1 As shown, another embodiment of the present invention provides another ablation ground simulation test device based on the acquisition and compensation of ablation retreat. The device also includes a second servo motor 5-2 on the basis of embodiment 1, Placed inside the wind tunnel for ablation ground simulation test;

[0100] The servo controller 3 synchronously sends the motor control signal to the servo motor 5-1 and the second servo motor 5-2;

[0101] The servo motor 5-1 is used to drive the transmission device and the mobile table 6 to move along the moving track 7 of the mobile table to compensate the ablation retreat displacement of the tested test model, so that the tested test model keeps the reference position of the ablation test unchanged;

[0102] The second servo motor 5-2 is used to drive the image collector 1, and the first servo motor 5-1 and the second servo motor 5-2 work synchronously to ensure that the relative position between th...

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

No PUM Login to View More

Abstract

The invention relates to an ablation ground simulation test device and method based on ablation backing amount compensation, and belongs to the technical field of aerospace vehicles. The method comprises the steps that a heated response video of a tested model in the test process is collected, the surface boundary of the model is captured through the image processing technology, the surface boundary movement change dynamic information is obtained, the surface ablation backing rate of the tested model is obtained through identification, the surface backing rate or the backing amount is fed backto a servo control system, the position deviation caused by surface backing of the tested model is compensated through a servo motor and a transmission system, and the stability of the environment state of the tested model in the test process is guaranteed.

Description

technical field [0001] The invention relates to an ablation ground simulation test device and method based on ablation retreat amount compensation, in particular to an ablation ground simulation test device and method for heat-resistant materials or thermal protection systems, and belongs to the technical field of aerospace vehicles. Background technique [0002] Thermal protection materials or thermal protection systems for high-speed aircraft usually require ablation ground simulation tests before actual flight to test whether the surface (outer mold line) retreat and temperature response of heat-resistant materials meet the design requirements in high-temperature environments. Ground test equipment for simulating aircraft thermal protection materials or thermal protection systems usually includes arc wind tunnels, plasma wind tunnels, gas flow wind tunnels, oxyacetylene flames, oxypropane flames, quartz lamps or carbon lamp radiation heating, etc. The existing ablation gr...

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
IPC IPC(8): G01M9/04G01M9/06G01N31/12B64G7/00
CPCG01M9/04G01M9/06G01N31/12B64G7/00
Inventor 罗晓光俞继军邓代英陈思员艾邦成陈连忠
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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