Investigation on combustion properties of hydrogen storage alloy/AP/HTPB propellant

Al/AP/HTPB propellant and hydrogen storage alloy/AP/HTPB propellant were prepared and their properties were characterized by DSC, PDSC, explosion heat and burning rate test. DSC and PDSC test results show that hydrogen storage alloy has catalysis on condensed phase reactions of AP/HTPB propellant in which main decomposition temperature is decreased by 21.67°C and 15.67°C at 0.1 MPa and 5 MPa, respectively while condensed phase reaction heat is increased by 105.97% and 21.87% separately. Explosion heat test results show that hydrogen storage alloy has catalysis on gas phase reactions of AP/HTPB propellant in which gas phase reaction heat is increased by 4.74%. Burning rate test results show that hydrogen storage alloy can increase burning rate of AP/HTPB propellant. Further studies indicate that possible correlation exist between burning rate and explosion heat of Al/AP/HTPB propellant and hydrogen storage alloy/AP/HTPB propellant. The burning rate-explosion heat formula is summed up.