Study on decreasing the burning rate of nitrate ester plasticized polyether propellant

Reducing burning rate of nitrate ester plasticized polyether (NEPE) propellant was studied by means of adding some burning rate modifiers and adjusting its composition. The results show that burning rate of the propellant can be depressed by enlarging the particle size of AP, reducing the ratio of NG/DEGDN, decreasing the content of AP and adding little content of burning rate modifiers. The burning rate under 7.0 MPa can be reduced to 6.87 mm/s with ratio 1:1:1 of burning rate modifiers glycerol triacetate/polyoxymethylene/sucrose octa-acetate.