Interior Ballistics Modeling and Optimization of One-side Ejection Device with Two-step Cylinder

doi:10.3969/j.issn.1000-1093.2017.03.008

Abstract

Abstract: A kind of one-side ejection device with two-step cylinder is proposed to increase the effective thrust travel of missile pneumatic launching system. The real gas state equation, Peng-Robinson equation, is used as theoretical basis. The mathematical expressions of pneumatic interior ballistics model are deduced on the basis of 'P-R' state equation for the two-step cylinder. The interior ballistics equation is solved by using Simulink software, and the one-side launching ejection is built by means of ADAMS. The co-simulation model of device is achieved. The results show that the pressure of first-order lower-chamber rises first and then falls. It can be seen from the calculated result that both the thermodynamic parameters and the missile acceleration obviously fluctuate in the process of cylinder changing, but their influences on missile speed and displacement are very small. To reduce the equipment volume, the air source volume is selected as the objective function. The air source volume optimized by genetic algorithm is decreased by 64.5%, thus improving greatly the mobility of launcher. Key

Key words: ordnancescienceandtechnology, missilecoldlaunching, two-stepcylinder, one-sideejectiondevice, realgaseffect, optimaldesign

CLC Number:

TJ768.2⁺8

YAO Lin, MA Da-wei, MA Wu-ning, REN Jie, ZHONG Jian-lin, WANG Ze-lin. Interior Ballistics Modeling and Optimization of One-side Ejection Device with Two-step Cylinder[J]. Acta Armamentarii, 2017, 38(3): 466-475.

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第38卷
第3期2017 年3月兵工学报ACTA
ARMAMENTARIIVol.38No.3Mar.2017

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