Interior Ballistic Properties of RDX-Based Solid Propellant

摘要

The nitramine gun propellant, containing cyclotrimethylene trinitramine(RDX), has received significant attention to meet the characteristics of the low vulnerability and high performance in future advanced weapon systems. The evaluation of insensitivity for the propellant was performed by the methods of bullet impact, fast cook-off, and slow cook-off test. Burning rate exponents and coefficients were deduced from CBT data. The burning rates in nitramine composite propellant have the different burning rate exponents and coefficients according to the pressure range. The burning rate of LOVA propellant with energetic plasticizer is found to be higher than that of propellant with inert plasticizer. For the firing tests of 120 mm tank gun, we designed a new ignition system. The ignition system has been tested in the ignition simulator. The LOVA gun propellant with new designed ignition system has been successfully tested in a 120mm tank gun. Pressure-time curves indicated a good ballistic behavior without differential pressure. In spite of low vulnerability and low flame temperature comparing to the conventional propellants, the maximum pressure of LOVA propellant was no higher than that of conventional propellant at the same muzzle velocity.