Inhibition of very high burning rate propellant

A novel propellant, which was of porous structure and had very high burning rate (above 1 000 mm/s), was prepared. Its inhibitor is very important in studying the application of very high burning-rate propellant. The propellant grains with size $25X25 mm were inhibited using polyvinyl chloride (PVC) as inner layer and cellulose acetate added flake asbestos as outer layer. The experiment of determining the thickness of coating layer, termination burning and indirect proof were studied. Results show that the convection burning of VHBR propellant is stable, no flame-leak. Its burning rate is above 1 000 mm/s by using this way.