关键词: 低特征信号推进剂+;硝胺推进剂;燃烧性能

Abstract: Two methods were employed to eliminate the destruction of secondary flame inhibitor to plateau effect of nitramine modified double base propellants One is the pre treatment using nitrocellulose coating the inhibitor which destroys the plateau combustion completely Another is adjusting burning rate directly when selecting the inhibitor with little destroy on plateau effect The experimental results show that, to the extrusive nitramine modified double base propellants, both of the two methods can improve the burning characteristics Coating the inhibitor decreases the pressure exponent from 0 79 to 0 35, but can not restore the plateau phenomena which was destroyed by inhibitors By increasing the carbon black content, the second method not only restores the plateau effect which was destroyed by inhibitor in original plateau pressure region, but also makes the burning rate characteristics of propellants with inhibitor better than the one without inhibitor The mechanism of the inhibitors in the plateau combustion was investigated using scanning microscope It shows that the reduction of carbon bone frame in the burning surface of propellants is the reason why plateau combustion is destroyed by inhibitors

Key words: Low signature propellants~+;Nitramine propellants;Combustion performance