反应气体驱动二级轻气炮发射特性实验及数值计算

董石; 孟川民; 谷伟; 彭旭升; 张波涛; 肖元陆; 方茂林; 向耀民; 王翔

doi:10.11858/gywlxb.20180528

反应气体驱动二级轻气炮发射特性实验及数值计算

doi: 10.11858/gywlxb.20180528

中国工程物理研究院流体物理研究所冲击波物理与爆轰物理重点实验室, 四川绵阳 621999

基金项目:

国家自然科学基金委员会-中国工程物理研究院NSAF联合基金 U1230201

详细信息

作者简介:
董石(1967-), 男, 主要从事动高压实验技术研究.E-mail:stones1967@126.com

通讯作者:
王翔(1968-), 男, 研究员, 主要从事动高压实验技术研究.E-mail:xiangwang_102@126.com

中图分类号: O521.3
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出版历程
- 收稿日期: 2018-03-21
- 修回日期: 2018-06-19

Experiment and Numerical Calculation on Launching Performance of Two-Stage Light Gas Gun Driven by Gas Reaction

National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621999, China

摘要

摘要: 通过实验确定了20/57 mm构型反应气体驱动二级轻气炮的气体装填参数与弹丸动能的关系。实验结果表明，反应气体驱动二级轻气炮的弹丸动能与气体反应化学能之间基本满足二次函数关系，系统发射稳定性满足加载实验要求。发展了基于气体爆轰模型的计算方法，通过数值计算获得了反应气体驱动二级轻气炮的发射特性，弹丸速度的计算结果与实测结果吻合较好。
- 气体反应 /
- 二级轻气炮 /
- 发射特性
Abstract: In this paper, the launching performance of a developed 20/57 mm two-stage light gas gun was studied, of which the driving energy is supplied by the gaseous chemical reaction.The experimental results show that the relationship between the chemical energy and the kinetic energy of the projectile can be properly fitted with quadratic polynomials.The tests conducted under controlled repeatable conditions indicate good repeatability of system, thus verifying that the system satisfies the requirement of the loading experiments.In addition, we developed a ballistic model of the two-stage light gas gun driven by gas reaction, and calculated the velocities of projectiles, which are in good agreement with the experimental data.
- gas reaction /
- two-stage light gas gun /
- launching performance

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图 1 弹丸动能与气体反应化学能的关系

Figure 1. Kinetic energy of projectile vs.chemical energy

下载: 全尺寸图片幻灯片

图 2 反应气体驱动二级轻气炮结构示意

Figure 2. Structure of two-stage light gas gun driven by reactive gas

下载: 全尺寸图片幻灯片

图 3 实验弹速与计算弹速比较(插图为二者的相对误差)

Figure 3. Calculated velocity vs.experimental velocity (The inset shows the relative error)

下载: 全尺寸图片幻灯片

表 1 20/57 mm反应气体驱动二级轻气炮实验数据

Table 1. Experimental details of 20/57 mm two-stage light gas gun driven by reactive gas

No.	D/mm	d/mm	m_p/g	E_c/MJ	E_p/MJ	u_p/(km·s^-1)
1	57	20	8.06	3.52	0.128	5.64
2	57	20	9.47	2.59	0.097	4.52
3	57	20	9.21	2.59	0.101	4.70
4	57	20	9.30	2.52	0.097	4.57
5	57	20	9.25	2.16	0.066	3.78
6	57	20	9.25	1.73	0.038	2.82

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表 2 计算弹速与实测弹速比较

Table 2. Comparison of calculated velocity with experimental data

V_c/L	p_g/MPa	E_c/MJ	v_p/(m·s^-1)	m/kg	m_p/g	u_p
V_c/L	p_g/MPa	E_c/MJ	v_p/(m·s^-1)	m/kg	m_p/g	Exp./(km·s^-1)	Calc./(km·s^-1)	Error/%
10.0	1.3	3.52	620	2.0	8.06	5.64	5.41	-4.07
10.0	1.5	2.59	474	2.0	9.47	4.52	4.48	-0.89
10.0	1.5	2.59	474	2.0	9.21	4.70	4.51	-4.04
7.3	1.5	2.52	585	2.0	9.30	4.57	4.77	4.38
10.0	1.5	2.16	408	2.0	9.25	3.78	3.84	1.59
10.0	1.5	1.73	331	2.0	9.25	2.82	2.89	2.48

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参考文献(9)

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