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首页> 外文期刊>Propellants, Explosives, Pyrotechnics >Laser Ignition of a Low Vulnerability Propellant Based on Nitrocellulose: Effects of Ar and N-2 Surrounding Atmospheres
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Laser Ignition of a Low Vulnerability Propellant Based on Nitrocellulose: Effects of Ar and N-2 Surrounding Atmospheres

机译：基于硝酸纤维素的低脆弱性推进剂的激光点火：AR和N-2周围环境的影响

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摘要

Ignition and combustion characteristics of a low-vulnerability propellant mainly composed of nitrocellulose are studied experimentally. Ignition is obtained using a 10 W laser diode. Experiments are performed in a cylindrical closed-volume reactor for different initial pressures and initial propellant masses under nitrogen and argon surrounding atmospheres. Ignition delays, maximal overpressures and propagation rates are obtained for different initial pressures and laser powers. Ignition probabilities for different laser powers and gaseous atmospheres are also investigated using the modified Langlie method. Argon is found to be a combustion enhancer for this kind of propellant, compared to nitrogen. Laser power plays a significant role on ignition probabilities and ignition delays, but not on propagation rates. As expected, ignition delay is highly dependent on initial pressure.
机译：实验研究了主要由硝酸纤维素组成的低脆弱性推进剂的点火和燃烧特性。 使用10 W激光二极管获得点火。 实验在圆柱形闭合体反应器中进行，用于不同的初始压力和初始推进剂质量在氮气下围绕大气的氩气。 对于不同的初始压力和激光功率，获得了点火延迟，最大过压和传播速率。 使用改性的Langlie方法还研究了不同激光功率和气态气氛的点火概率。 与氮气相比，发现这种推进剂的燃烧增强剂是一种燃烧增强剂。 激光功率在点火概率和点火延迟上起着重要作用，但不是传播速率。 正如预期的那样，点火延迟高度依赖于初始压力。

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