Energy and Combustion Characteristics of Fuel-rich Propellant with Agglomerated Boron Particles

The energy characteristics of fuel-rich propellant with boron were calculated by means of minimal free energy program.The effect of mass fraction of boron powder on the energy characteristics of the propellant at various pressure range were obtained.The combustion characteristics and combustion efficiency of boron in the combustion residue of fuel-rich propellant were analyzed by using the nickel wire and chemical titration method,respectively.The results show that the energy of propellant are increased with increasing the content of boron powder.The burning rate and pressure exponent can be increased which contribute to the bigger diameter of agglomerated boron particles,and the burning rate is increased with increasing the content of agglomerate boron particles.The ratios of boron and boron compound before and after combustion of fuel-rich propellant were changed obviously and the combustion efficiency of boron in fuel rich propellant with agglomerated boron particles was improved greatly.