简介：Thecombustion(ballistic)propertiesofahighsolidloadingcompositesolidpropellantfamily(Butalites)wasstudiedexperimentallybyusingpropellantformulationsbasedonhydroxy-terminatedpolybutadienepre-polymer(HTPB)asafuelbindermainbackbone,bi-modalsystemammoniumperchlorateoxidizer(AP)andaluminumpowder(Al)asmetallicfuel.Burningratesweredoubledatvariouspressures,whensolidsloading(APand17%Al)wereincreasedfrom80to88%andthemeasuredcharacteristicvelocityvalueswereincreasedbyabout100m/sec.Thepressureexponent(n)valueswerelowerwith80-85%solidsloading.Theburningrateswereincreasedbyabout2-5%whencomparingthedataobtainedbystaticfiringwiththoseobtainedbythestrandburnermethod.