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

Center of explosion location method

An azimuth and test point technology, which is applied in the field of measurement of the azimuth angle and position of the detonation center in a dynamic explosion test, can solve the problems of high maintenance costs, limited range of measurable angles, affecting the normal test of explosion parameters, etc., and achieves the effect of low cost.

Active Publication Date: 2019-12-06
XIAN MODERN CHEM RES INST
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following problems in the method of using high-speed camera to measure the explosion center: 1. The positioning scale will interfere with the explosion field and affect the normal test of other explosion parameters; 2. The high-speed camera is expensive, and the test process may be damaged by fragments produced by the explosion. The maintenance cost is high; 3. The sampling frequency of the high-speed camera is heavily affected by the intensity of the ambient light. When the light is insufficient, the sampling frequency needs to be reduced to shoot, and it may not be possible to accurately capture photos that can effectively interpret the location of the explosion center; 4. Use a high-speed camera to measure the explosion center It can only measure the detonation center position of the explosion process within the field of view of the camera, and the range of measurable angles is limited

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
  • Center of explosion location method
  • Center of explosion location method
  • Center of explosion location method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of testing device is designed and processed according to the method for locating the center of explosion of the present invention. figure 1 , including a test base 1, a pressure sensitive element 2 and a positioning marking 3. The test base 1 is a cylindrical shell structure with an open lower end, and the three pressure sensitive elements 2 are evenly distributed on the concentric circles with a radius of 6 cm on the upper end surface of the test base 1, and the three pressure sensitive elements 3 are distributed in an equilateral triangle; the positioning marks The line 3 connects the center of the upper end surface of the test base 1 with any pressure sensitive element 2 and extends to the edge of the test base 1 .

[0023] The TNT explosive with a mass of 1kg is selected for static explosion test, and the explosion center is measured by the method for locating the center of explosion of the present invention. Establish a Cartesian coordinate system on the te...

Embodiment 2

[0032] The test device and test layout used are the same as in Example 1. A rectangular coordinate system is established on the test site, the x coordinate axis points to the due east, and the y coordinate axis points to the due north. Draw 2 coordinate axes with white ash; the coordinates of the 3 test points T 1 (0,0),T 2 (15m, 0), T 3 (0, 12m); install one set at each of the three test points figure 1 As shown in the test device, when installing, ensure that the upper surface of the test base 1 is horizontal and flush with the ground of the site. When installing, adjust the angle of the test device so that the positioning marking line 3 points to the true north, that is, the positive direction of the y-axis. Connect the pressure sensitive element and the Data acquisition instrument: choose a point on the x coordinate axis of the test site as the center of explosion, arrange the TNT explosive sample, measure and record the coordinates of the center of explosion (9m, 0m) wit...

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 discloses an explosion center azimuth angle and a test method of an explosion center position. In the method, 3 pressure sensing components which are distributed as an equilateral triangle at a measuring point are used to measure explosive shock wave arrival time; according to a geometrical relationship of the 3 pressure sensing components and a time difference of the shock wave reaching the 3 pressure sensing components, the explosion center azimuth angle can be calculated; and through combining specific positions of the 2 measuring points and the explosion center azimuth anglemeasured by the 2 measuring points, the explosion center position is calculated. A device needed during explosion center measurement in the method has a simple structure and operation is convenient. During usage, the measurement device is installed on an explosion place surface, an explosion place is not interfered, measurement of other explosion parameters is not influenced, and the device is noteasy to be damaged by explosion shock or explosion fragments. The method is not influenced by ambient light intensity, can be used to measure angles of the explosion center at any directions of the measuring points and can be used to calculate the specific position of the explosion center.

Description

technical field [0001] The invention relates to a method for locating the detonation center, which belongs to the technical field of propellant and explosive testing, and is mainly used for the measurement of the detonation center azimuth and the detonation center position in dynamic explosion tests. Background technique [0002] In order to truly reflect the damage effect of the warhead on the target in the actual combat state, dynamic explosion tests have been increasingly used to evaluate the damage capability of the warhead in recent years. Compared with the static explosion test, the dynamic explosion test, because the detonation center position is not fixed, will affect the construction of the sample explosion power field and the evaluation of the sample's ability to damage the target. Therefore, the dynamic explosion test first needs to determine the detonation center position of the sample. [0003] At present, the detonation center measurement of the dynamic explosi...

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 Patents(China)
IPC IPC(8): G01S5/00
CPCG01S5/00
Inventor 严家佳苏健军姬建荣张俊锋何性顺陈君王丹孔霖
Owner XIAN MODERN CHEM RES INST
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