Measurement method for fragment velocity based on active screen array in static detonation test

Yang Jiuqi; Dong Tao; Chen Ding; Ni Jinping; Kai Baisheng

doi:10.3788/IRLA202049.0113003

In order to accurately and reliably measure the flying speed of the fragment in any horizontal direction in the static detonation test, a method for measuring the flying speed of the static detonation fragment based on active screen array was proposed. Firstly, twelve groups of active six-screen arrays were arranged around the static explosion point of measured ammunition. The flight parameters(such as velocity, incident angle and vertical target density) of these fragments can be obtained when they pass through the detection area in every six-screen arrays. Secondly, according to the configuration of the proposed screen array, its model was established to obtain the related flight parameters, and then the change rule of error with each velocity component was analyzed in a certain range. Through theoretical analysis and live ammunition experiment, results show that the component errors of fragment velocity is less than 2.7 m/s, and thus the proposed method can meet the measurement requirement of fragment velocity in any horizontal direction.

Measurement method for fragment velocity based on active screen array in static detonation test

1. School of Optoelectronic Engineering, Xi'an Technological University, Xi'an 710021, China;

2. Heilongjiang North Tool Co., Ltd., China North Industries Group Corporation Limited, Mudanjiang 157000, China

Received Date: 2019-10-05

Rev Recd Date: 2019-11-15

Publish Date: 2020-01-28

Key words:

Abstract: In order to accurately and reliably measure the flying speed of the fragment in any horizontal direction in the static detonation test, a method for measuring the flying speed of the static detonation fragment based on active screen array was proposed. Firstly, twelve groups of active six-screen arrays were arranged around the static explosion point of measured ammunition. The flight parameters(such as velocity, incident angle and vertical target density) of these fragments can be obtained when they pass through the detection area in every six-screen arrays. Secondly, according to the configuration of the proposed screen array, its model was established to obtain the related flight parameters, and then the change rule of error with each velocity component was analyzed in a certain range. Through theoretical analysis and live ammunition experiment, results show that the component errors of fragment velocity is less than 2.7 m/s, and thus the proposed method can meet the measurement requirement of fragment velocity in any horizontal direction.

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Reference (14)

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Measurement method for fragment velocity based on active screen array in static detonation test

doi: 10.3788/IRLA202049.0113003

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通讯作者: 陈斌, bchen63@163.com

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