Interior Ballistic Characteristics of Compressed Air Ejection System

doi:10.3969/j.issn.1000-1093.2021.12.008

Abstract

Abstract: An interior ballistic mathematical model of ejection process was established to investigate the interior ballistic characteristics of compressed air ejection system under different initial conditions.The effects of the full opening time and flow area of launch valve and the initial volume of low-pressure chamber on the interior ballistic characteristics were studied through numerical calculation.The results show that the opening time of launch valve has a significant impact on the internal ballistic characteristics，and with the increase in the opening speed，the ejection time becomes shorter，the initial velocity of projectile increases，and the overload of projectile becomes larger. In a certain range，with the increase in the maximum flow area of launch valve，the ejection time becomes shorter，the initial velocity of projectile increases，and the overload of projectile changes more smoothly.However，the maximum flow area of launch valve has a weak influence on the maximum overload of projectile.The initial volume of low-pressure chamber has a weak influence on the ejection stroke and velocity，but has a great influence on the overload of projectile at the initial ejection stage.

Key words: compressedairejection, interiorballisticcharacteristics, launchvalve, initialvolumeoflowpressurechamber

CLC Number:

TJ768.2⁺1

LI Boping， LI Guoqing， ZHANG Jiwei， L Hongliang， WU Jun， LI Mengyuan， LI Congrui. Interior Ballistic Characteristics of Compressed Air Ejection System[J]. Acta Armamentarii, 2021, 42(12): 2606-2616.

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第42卷第12期2021 年12月
兵工学报ACTA ARMAMENTARII
Vol.42No.12Dec. 2021

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