Experiment of Slow Cook-off Response Characteristics of Penetrator

doi:10.3969/j.issn.1000-1093.2020.02.010

Abstract

Abstract: An experimental device was designed for evaluating the slow cook-off response characteristic of full-scale penetrator. The penetrator with a mass of 290 kg was placed in the slow cook-off oven and slowly heated at a heating rate of 3.3 ℃/h. The surface temperature of penetrator was collected in real time, and the whole experimental process was recorded. The peak value of reflected shock wave overpressure at a distance of 7 m from the mass center of penetrator was measured. The full-scale penetrator burns when it is heated for 42 hours, 45 minutes and 23 seconds and the temperature reaches 190 ℃, a more intense reaction occurs after 41 seconds, and the slow cook-off oven and the penetrator are exploded to form large fragments. The exposed explosive equivalent is deduced to be 4.153 kg from peak value of the reflected shock wave overpressure, which is far less than the actual charge equivalent and the exposed explosive equivalent during full detonation. Based on the analysis of the heating time, the surface temperature of penetrator, the damage on experimental site, the fragments of penetrator, the peak value of reflected shock wave overpressure and the reaction mechanism, the slow cook-off response type of penetrator is judged to be combustion-to-explosion transition.Key

Key words: penetrator, slowcook-off, responsecharacteristic, shockwaveoverpressure

CLC Number:

TJ760.3⁺1

DAI Xianghui, DUAN Jian, SHEN Zikai, WANG Kehui, LI Mingrui, LI Pengjie, ZHENG Yafeng, ZHOU Gang. Experiment of Slow Cook-off Response Characteristics of Penetrator[J]. Acta Armamentarii, 2020, 41(2): 291-297.

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第41卷
第2期2020 年2月兵工学报ACTA
ARMAMENTARIIVol.41No.2Feb.2020

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