CHALLENGES OF INTERNAL BALLISTICS MODELLING OF NOVEL PROPELLANTS AND PROPELLANT GEOMETRY

摘要

The desire to improve gun performance has lead to the development of novel propellants using non-uniform burn laws and/or complex geometry, both in terms of grain shape and foamed internal structure. These propellants are not readily characterised using traditional methods. This paper discusses three possible procedures for characterising such propellants in terms of the non-uniform burn rate coefficients and the complex relationship between surface area and regression distance. The work presented here is on-going with technical support from ARDEC and ATK. It is the intention to develop some of these procedures and eventually incorporate them into the FNGUN internal ballistics modelling software.