氧化剂含量和粒度对NEPE推进剂燃速影响的模型化

以高能固体推进剂热分解特性和燃烧模型的研究成果为基础,建立了由化学结构参数计算NEPE推进剂的燃速和压强指数的公式,计算了氧化剂组分含量和粒度对燃烧性能的影响。经验证,计算结果与实测燃速值的偏差全部在±20%以内,其中80%的偏差在±10%以内。这说明所建立的模型基本合理,编制的NEPE类推进剂燃速计算程序基本可行。

Predicting effects of oxidizer content and particle size on NEPE combustion characteristics

On the basis of an analysis and investigation on thermal behavior and combustion model of the high energy solid propellant,considering the combustion characteristics of NEPE propellant,the burning rate and pressure exponent equation of NEPE was derived based on the chemical structure.In the light of this model,a computer program is compiled to compute the burning rate and its pressure exponent.The effects of oxidizer(AP,RDX and HMX) content and particle size on the propellants combustion characteristics are studied systematically.The results show that most of calculated results are within the ten percent relative error range of the experimental values.It proves that the model and the program are reasonable.