Two-dimensional Interior Ballistics Model of High Pressure Ejection Apparatus and Analysis on the Characteristics ofFlow Field in Launching Chamber

doi:10.3969/j.issn.1000-1093.2015.06.007

Abstract

Abstract: High pressure accumulated by propellant burning in high pressure ejecting apparatus makes the chamber open instantly and eject a projectile to a target. In order to grasp the complex change of gas flow in the launching chamber, a two-dimensional interior ballistics model is established and simulated by Runger-Kutta and MacCormark schemes. The calculated pressure results are reliable by comparison with the experimental ones. The flow field characteristics are got through the analysis of the calculated results, such as gas pressure, velocity, etc. The results show that the size and distribution of high pressure gas accumulated at the bottom of the projectile have the direct effects on the ejection performance.

Key words: ordnance science and technology, high pressure ejection, interior ballistics, two-dimensional gas flow, numerical simulation

CLC Number:

TJ55
O315

JIANG Shu-yuan， WANG Hao, RUAN Wen-jun. Two-dimensional Interior Ballistics Model of High Pressure Ejection Apparatus and Analysis on the Characteristics ofFlow Field in Launching Chamber[J]. Acta Armamentarii, 2015, 36(6): 1009-1014.

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