Mr. Tapan Kumar Biswal Profile

Tapan Kumar Biswal

Deputy Director at Proof & Experimental Establishment

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Proceedings Article | 11 January 2007 Paper

Analysis of base fuze functioning of HESH ammunitions through high-speed photographic technique

T. Biswal

Proceedings Volume 6279, 62792A (2007) https://doi.org/10.1117/12.725229

KEYWORDS: High speed photography, Photography, Explosives, Image processing, Wave plates, High speed cameras, Wave propagation, Image analysis, Data processing, Safety

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High-speed photography plays a major role in a Test Range where the direct access is possible through imaging in order to understand a dynamic process thoroughly and both qualitative and quantitative data are obtained thereafter through image processing and analysis. In one of the trials it was difficult to understand the performance of HESH ammunitions on rolled homogeneous armour. There was no consistency in scab formation even though all other parameters like propellant charge mass, charge temperature, impact velocity etc are maintained constant. To understand the event thoroughly high-speed photography was deployed to have a frontal view of the total process. Clear information of shell impact, embedding of HE propellant on armour and base fuze initiation are obtained. In case of scab forming rounds these three processes are clearly observed in sequence. However in non-scab ones base fuze is initiated before the completion of the embedding process resulting non-availability of threshold thrust on to the armour to cause scab. This has been revealed in two rounds where there was a failure of scab formation. As a quantitative measure, fuze delay was calculated for each round and there after premature functioning of base fuze was ascertained in case of non-scab rounds. Such potency of high-speed photography has been depicted in details in this paper.

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