双基火药稳态燃烧的模拟与预估

MODELLING AND PREDICTION OF THE COMBUSTION PROCESS OF DB SOLID PROPELLANTS

本文把双基火药燃烧波中复杂的化学反应归并为四类(即反应Ⅰ、Ⅱ、Ⅲ、Ⅳ),提出了从泡沫区到最终火焰区,火药中N元素的还原遵循如下途径:[RO—NO_2]■NO_2■NO■N_2。在此基础上,用化学流体力学理论建立了这类火药稳态燃烧的数学模型。在0.1～500MPa压力范围内,对大量不同配方的双基推进剂和炮用单、双基发射药的燃烧性能(燃速、温度系数等)作了理论预估和实验测试。结果表明,预估结果与实验基本符合。本文还给出了部分例证。

In this paper, four kinds of chemical reactions (Ⅰ, Ⅱ,Ⅲ,Ⅳ) are considered in the combustion wave of double-base solid propellants. It is proposed that starting from the foam zone to the final flame zone, the chemical reactions involving the reduction of N follow the series A mathematical model based on such a mechanism has been developed to predict the burning characteristics of DB solid propellants with different formulations in a wide range of pressures(0.1-500MPa). All of the predicted combustion parameters were compared with experimental data attaining good agreement.