基于应变测试系统的二级轻气炮活塞运动测量

doi:10.3969/j.issn.1000-1093.2021.08.025

摘要/Abstract

摘要： 为了研究活塞在二级轻气炮泵管中的运动过程，利用应变测量技术对活塞运动规律进行测量研究。通过对57 mm/10 mm二级轻气炮泵管外壁按一定距离布设应变片测点，对轻气炮发射过程中的活塞运动导致泵管环向应变进行监视测量，直接得到典型实验条件下活塞运动过程中的内弹道压力变化，并通过推导得到活塞运动时程及位移与弹底压力的关系。结果表明：实验得到的活塞速度、位移之间关系与相关理论计算结果吻合良好，验证了该方法研究活塞在轻气炮内弹道运动规律的可行性，为优化轻气炮内弹道程序参数和提高二级轻气炮的发射性能提供实验支持。

关键词: 二级轻气炮, 应变测量, 内弹道压力, 活塞运动时程

Abstract: In order to study the motion process of piston in the interior ballistics of two-stage light gas gun,the piston motion is measured using a strain guage measuring system.The measuring points of strain gauge were laied at a certain distance for the external wall of pump tube of 57 mm/10 mm two-stage light gas gun, and the ring strain of the pump tube caused by piston motion was monitored and measured during the launch of the light gas gun. The change of internal ballistic pressure in the process of piston motion under typical experimental conditions was obtained directly. The piston motion time history and the relationship between displacement and bottom pressure were derived. The results show that the relationship between piston velocity and displacement is in good agreement with the theoretical results, and the feasibility of the proposed method is verified. It provides theoretical guidance for optimizing the program parameters of the internal ballistic of the light gas gun and improving the launching performance of the two-stage light gas gun.

Key words: two-stagelightgasgun, strainmeasurement, internalballisticpressure, timehistoryofpistonmovement

中图分类号:

TJ06

赵奇峰，李运良，李进，张向荣，朱玉荣，谭书舜，张子栋. 基于应变测试系统的二级轻气炮活塞运动测量[J]. 兵工学报, 2021, 42(8): 1803-1808.

ZHAO Qifeng， LI Yunliang， LI Jin， ZHANG Xiangrong， ZHU Yurong， TAN Shushun, ZHANG Zidong. Measurement of Piston Motion of Two-stage Gas Gun Based on Strain Gauge Measuring System[J]. Acta Armamentarii, 2021, 42(8): 1803-1808.

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