模糊综合评价模型在高能硝胺发射药改性评价中的应用研究

Fuzzy Comprehensive Evaluation Model Applying in the Modification Evaluation of High Energy Nitramine Gun Propellant

为研究模糊综合评价模型在高能硝胺发射药改性评价中的应用,采用包覆工艺,分别选取三氨基三硝基苯(TATB)和聚酯(NA)作为包覆工艺中的降燃速材料,制备了TATB包覆发射药和NA包覆发射药,对比了包覆和未包覆发射药的堆积密度、局部燃速、爆热、燃烧渐增性以及内弹道性能;基于此实验结果,采用层次分析法,评价了TATB和NA对发射药基本性质和燃烧性能的影响程度。研究建立了发射药基本性质和发射药燃烧性能间的模糊评价方法;发现面向发射药燃烧性能,局部燃速的影响权重最大,为0.82;爆热的影响权重次之,为0.11;堆积密度的影响权重为0.07。在堆积密度差异较小的情况下,由于NA包覆发射药的降燃速效果明显强于TATB包覆发射药,NA包覆发射药的能量损失虽然较TATB包覆发射药更大,NA包覆发射药的燃烧性能优于TATB包覆发射药,且二者明显强于未包覆的空白发射药。

In order to investigate the application of the fuzzy comprehensive evaluation model in the modification evaluation of high energy nitramine gun propellant,the triamino trinitrobenzene(TATB)coated and polyester(NA)coated gun propellant were prepared by coating technology using TATB and NA as the burning rate reduction materials,and their bulk densities,burning rates,explosion heats,propellant burning progressivities and interior ballistic performances were compared.Moreover,the analytic hierarchy process(AHP)was adopted to quantify the influence of TATB and NA on the basic characteristics and the combustion performances above.It was found that,the fuzzy comprehensive evaluation can be established between the basic characteristics and combustion performances of propellants.For the better overall combustion performance,the weight of burning rate is equal to 0.82,which is the highest;the weights of explosion heat and bulk density are equal to 0.11 and 0.07,respectively.In the case of small difference in bulk density,even though the energy loss caused by NA coating is greater than that of TATB coating,the decrease of burning rate by NA coating would be larger and the propellant coated with NA has the better performance than the propellant coated with TATB,and the two are significantly better than that of blank propellant.