等离子体增强固体火药燃烧性能的实验研究

利用300mL电热化学密闭爆发器研究了在不同输入电能、装填密度和初始温度下等离子体点火对某混合酯高能19孔花边形固体火药颗粒燃烧性能的影响;分析了上述不同条件下等离子体对该固体火药燃烧速率影响的变化规律。结果表明,输入等离子体电能从15.4kJ增大到61.6kJ后,固体火药燃速在100MPa时提高106%,200MPa时提高30%,300MPa以上燃速无明显变化;等离子体点火对低温火药燃烧初期和中期的燃速均有显著的增强作用,对高温火药点火燃烧初始燃速的增强作用较为明显。

Experimental Study on the Enhancement Effect of the Combustion Performance of Solid Powder with Plasma

The effect of plasma ignition at different input power ,different loading densities and different initial temperatures on the combustion performance of a 19‐hole petal mixed‐ester high‐energy solid propellant grain was studied by a 300mL electrothermal chemical closed bomb .The variation rule affecting the burning rate of the solid propellant by plasma under above‐mentioned different conditions was analyzed .The results show that when the input electric energy increases from 15 .4kJ to 61 .6kJ ,the burning rate of the solid powder enhances by 106% at 100MPa ,and by 30% at 200MPa , but the burning rate has no obvious change at above 300MPa . The burning rate in the initial and the middle combustion of the powder at low temperature can be obviously enhanced by plasma ignition ,while the initial burning rate enhancement for powder at high temperature becomes more signifi‐cant .