Generic Extruded Propellant Grain Surface and Volume Calculations
Final rept. Sep 2003-Mar 2004
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
Pagination or Media Count:
Experimental propelling charges that have non-standard extruded granular shapes require calculations of available burning surface area in order to be simulated by interior ballistic IB modeling applications. Formerly, extensive hand calculations or development of a one-of-a-kind form function was necessary in order to analyze the changes in surface area whenever non-standard grain geometries were to be used in experimental gun propelling charges. A quick. easy-to-use computer program has been developed to calculate surface and volume of propellant grains versus depth burning by an analysis of propellant slivers the results are then added to create a full-grain form function. The resultant data can be used in IB programs to estimate maximum pressures and projectile velocities from experimental propelling charges and gun systems.