Effect of agglomerated boron on combustion properties of fuel-rich propellants

The effects of agglomerated boron with different particle size and coating agent on combustion properties of boron-based fuel-rich propellants were experimentally investigated.The results show that burning rate of the propellant increases,and low-pressure combustible limit decreases with the increase of particle size of agglomerated boron,moreover pressure exponent tends to decreasing;the AP and LiF coating are in favor of increasing burning rate of the propellant and decreasing low-pressure combustible limit,but unfavorable for increasing pressure exponent.