嵌入多孔球形颗粒的超高燃速推进剂内弹道研究

In order to solve the problems of poor performance consistency and difficult adjustment of burning rate and density of monolithic porous propellant，a scheme of embedding porous spherical particles in composite propellant to achieve ultra-high burning rate is proposed. The formulation and forming process of porous spherical particles are introduced. The interior ballistics and impact sensitivity are tested. Ultra-high burning rate propellants with different formulations embedded with porous spherical particles were developed. The combustion characteristics of this kind of propellants were studied and analyzed through the internal ballistic performance test. The development and test results show that the porous spherical particles with high porosity and low density are easy to produce convective combustion，but the safety performance is good. The scheme of embedding porous spherical particles in composite propellant to achieve ultra-high burning rate is feasible. It can effectively adjust the density and burning rate from conventional propellant to ultra-high burning rate propellant by adjusting the porosity and energy density of porous spherical particles and their proportion in propellant.