Preliminary Study of Two-Stage Light Gas GunUsing Reactive Gas as Driving Energy
-
摘要: 二级轻气炮是一种常见的超高速发射装置,其发射速度的调节范围大,弹速重复性好,对场地条件的要求不高,在高压物理、空间碎片防护、材料力学性能及动态响应研究等方面有广泛的应用。但是传统的轻气炮采用火药作为驱动能源,存在火药分子质量大、声速低、产物有毒、运输和存储受限等缺点。为此,设计并发展了用气体反应释能代替火药作为驱动能源的反应气体驱动二级轻气炮技术,实测发射弹速达到5.6 km/s。该技术是一种廉价、无需火工品、环境友好型气炮驱动技术。Abstract: The two-stage light gas gun is a conventional device for accelerating a projectile commonly chosen for research owing to its wide range of launching velocities, good repeatability and flexible work environment, and is widely used in studies of high pressure physics, space debris protection, and mechanical properties and dynamic responses of materials.However, as the traditional light gas gun uses explosive as the energy source, it suffers from the disadvantages of comparatively heavy molecular weight and low sound velocity, poisonous products, requirement of special conditions for transportation and storage.In this work we developed a novel two-stage light gas gun, whose driving energy is supplied by the gaseous chemical reaction, and whose highest velocity in projectile-launching reaches 5.6 km/s.This novel technology is inexpensive, free from use of explosive and environment-friendly.
-
Key words:
- hypervelocity launching /
- gas reaction /
- two-stage light gas gun /
- high pressure physics
-
表 1 反应气体驱动20/57 mm二级轻气炮实验数据
Table 1. Experimental data of 20/57 mm two-stage light gas gun using reactive gas as driving energy
No. dlaunch/(mm) dpump/(mm) E/(MJ) mnitrocotton*/(g) Cu flyer dimension/(mm×mm) mp/(g) up/(km/s) 1 20 57 2.59 612 Ø18×1.5 9.47 4.52 2 20 57 2.59 612 Ø18×1.5 9.21 4.70 3 20 57 3.52 831 Ø18×1.0 8.06 5.64 -
[1] LIU N, ZHANG X Y.Quasi-dimensional interior ballistic model and numerical simulation of combustion light gas gun[C]//Proceedings of the 26th International Symposium on Ballistics.Miami: National Defense Industrial Association, 2011: 625-632. [2] 邓飞, 刘宁, 张相炎.燃烧轻气炮发射药成分对内弹道性能的影响分析[J].弹道学报, 2012, 24(4):90-93. doi: 10.3969/j.issn.1004-499X.2012.04.020DENG F, LIU N, ZHANG X Y.Analysis on influence of propellant component on interior ballistics of combustion light gas gun[J].Journal of Ballistics, 2012, 24(4):90-93. doi: 10.3969/j.issn.1004-499X.2012.04.020 [3] 邓飞, 张相炎, 刘宁.点火过程和初始条件对燃烧轻气炮内弹道性能的影响[J].爆炸与冲击, 2013, 33(5):551-555. doi: 10.3969/j.issn.1001-1455.2013.05.016DENG F, ZHANG X Y, LIU N.Influences of ignition process and initial conditions on interior ballistic characteristics of combustion light gas gun[J].Explosion and Shock Waves, 2013, 33(5):551-555. doi: 10.3969/j.issn.1001-1455.2013.05.016 [4] 邓飞, 张相炎.燃烧轻气炮氢氧燃烧特性详细反应动力学模拟[J].兵工学报, 2014, 35(3):415-420. doi: 10.3969/j.issn.1000-1093.2014.03.019DENG F, ZHANG X Y.Simulation of hydrogen-oxygen combustion of combustion light gas gun using detailed chemical kinetics model[J].Acta Armamentarii, 2014, 35(3):415-420. doi: 10.3969/j.issn.1000-1093.2014.03.019 [5] 张新征.燃料轻气炮(CLGG)的技术原理及其概念应用[J].外军炮兵, 2011, 27(4):30-36.ZHANG X Z.The principle and application of combustion light gas gun [J].Foreign Artillery, 2011, 27(4):30-36. [6] KRUCZYNSKI D, MASSEY D, MILLIGAN R, et al.Combustion light gas gun technology demonstration: ADA462130[R].Manassas: UTRON Inc., 2007. [7] 王金贵.气体炮原理及技术[M].北京:国防工业出版社, 2001.WANG J G.Principle and technology of gas gun[M].Beijing:National Defense Industry Press, 2001.