Combustion Features Of Nitrate Ester Plasticized Polyether Solid Propellants With Adn And Fox-12 Particles

Several industrial and research nitrate ester plasticized polyether (NEPE) solid ropellants with and without N-guanylurea-dinitramide (FOX-12 or GUDN) and ammonium dinitramide (ADN) particles, featuring the same nominal composition, were prepared. The combustion properties (strand burning rate, combustion flame structures, and the associated combustion temperature distribution) of propellants with FOX-12 and ADN were determined and also compared to those propellants without FOX-12 and ADN particles. It turned out that the performed NEPE solid propellants containing dual oxidizer particles (FOX-12 and ADN) can be prepared and cast safely. The addition of ADN particles to the propellant formulation can increase the burning rate and pressure exponent, and affect the combustion behavior, when comparing to the reference propellant. The combustion flame structures of ADN-based NEPE solid propellant with dual oxidizers at various pressures present a multi-flame structure, and the brightness of flame structures increase with an increase in the pressure.