关键词: 高能推进剂;高压;燃烧性能

Abstract: Law of the high pressure combustion properties of the nitrate ester plasticized polyether propellants was studied in this paper.Effects of different binders(PET, PEG and GAP) , plasticizers(NG,TEGDN and BTTN), the contents and the particle sizes of solid ingredients (AP,RDX and Al)on combustion properties at high pressure were studied experimentally.It was found that there was the break point of r-p curve in the nitrate ester plasticized polyether propellants from 9MPa to 25MPa,and the variation law of the high pressure combustion properties was obtained when composition and solid ingredients contents or particle sizes of propellants were changed.The combustion rate of propellant is increased in turn as binders are PET, PEG and GAP respectively; The more nitrate ester group,the higher the combustion rate of propellant with different plasticizers; when AP contents are increased and RDX contents are reduced,the combustion rate is increased and the pressure exponent is reduced; When the particle sizes of AP are reduced, the combustion rate is increased and super fine AP can increase it distinctly; When the particle sizes of Al are reduced , the combustion rate is reduced firstly and then increased.This results in the pressure exponent to increse.

Key words: High energy propellant;High pressure;Combustion performance