【摘要】 以D-5/7单基发射药为基药,恒定聚酯含量,调节硝化甘油(NG)加入量,制备了4种改性单基药样品。通过傅里叶红外光谱(FTIR)、密闭爆发器和14.5 mm口径弹道枪试验,研究了NG的加入量对改性单基药的燃烧渐增性的影响。结果表明,NG的加入量越大,其渗透度越深,改性单基药的燃烧渐增性越好,弹丸初速越快。与D-5/7单基发射药相比,样品E4(NG的加入量为12%)的弹丸初速提高82.5 m.s-1,提高幅度为8.35%。更多还原

【Abstract】 Four modified single-base propellant(SB projpellant) samples with different contents of nitroglycerine(NG) were prepared using D-5/7 SB propellant as base raw material,fixating polyester content and controlling added amount of NG.The effect of NG content on the combustion progressivity of modified single base propellant was studied by FTIR,closed-bomb test and 14.5 mm gun test.Results show that the greater the NG content in modified single base propellant,the greater the permeation depth of NG,the better the combustion progressivity of modified single base propellant and faster the muzzle velocity of modified SB propellant.In comparison with D-5/7 SB propellant,the muzzle velocity of sample E4(12% NG) increases by 82.5 m·s-1(8.35%).更多还原