Electromagnetic measurement method for projectile speed in impact extrusion process of countersunk projectile

A measurement method, electromagnetic technology, applied in electrical digital data processing, instrumentation, design optimization/simulation, etc., to achieve high accuracy of calculation results and reduce inherent errors of the system

Active Publication Date: 2020-02-28
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
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Problems solved by technology

At the same time, the electromagnetic measurement system has eddy current effects and nonlinearities caused by magnetic saturation in the measurement of metal gun cases and projectiles. The accuracy and quick response of medium projectile velocity measurement have a direct impact on

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  • Electromagnetic measurement method for projectile speed in impact extrusion process of countersunk projectile
  • Electromagnetic measurement method for projectile speed in impact extrusion process of countersunk projectile
  • Electromagnetic measurement method for projectile speed in impact extrusion process of countersunk projectile

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Embodiment Construction

[0046] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0047] The present invention is an electromagnetic method for measuring projectile velocity during the impact and extrusion process of countersunk projectile, comprising the following steps:

[0048] S1. Establish a simulation test system and determine the simulation test conditions;

[0049] The simulation test system includes a c...

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Abstract

The invention discloses an electromagnetic measurement method for the projectile speed in the impact extrusion process of a countersunk projectile. An electromagnetic theory and a kinetic theory whichaccord with a basic physical principle are adopted; a function relationship between physical property parameters and temperature and magnetic field intensity is considered at the same time, materialparameters are input, the eddy current effect of a gun box is effectively simplified, the eddy current effect is equivalent to a circumferential current having a determination effect on speed measurement, and the system error is remarkably reduced by utilizing a multi-interval measurement method. The projectile speed obtained through calculation is highly consistent with the design requirement, and therefore the effectiveness of the method is proved. The projectile movement speed obtained through calculation can be used for objectively evaluating combustion characteristics and subsequent ballistic characteristics in the impact extrusion process of the countersunk projectile.

Description

technical field [0001] The invention belongs to the technical field of modern high-performance artillery design, and in particular relates to an electromagnetic measurement method for projectile velocity during the impact and extrusion process of countersunk projectiles. Background technique [0002] As a new firing principle artillery, countersunk ammunition has reduced volume and weight while improving overall performance by 30% compared with conventional ammunition. At the same time, the cost of countersunk ammunition is relatively low and it is not easy to be damaged. Therefore, it has attracted widespread attention at home and abroad. There are different point fire transmission structures for submersible projectiles at home and abroad, such as laser ignition, plasma ignition, ignition device ignition, explosive network ignition tube and LVD central fire transmission tube, etc. Most of them are in the experimental research and development stage, and a few are put into for...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/14
Inventor 李兴文杨伟鸿刘毅陈立樊浩
Owner XI AN JIAOTONG UNIV
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