An Inverse Analysis of Electrothermal-Chemical (ETC) Gun Experimental Data
Final rept. May 1990-Jan 1991
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
Pagination or Media Count:
An inverse analysis is presented as one method of assessing ballistic control exhibited in electrothermal-chemical ETC experimental gun firings. The analysis attempts to determine the decomposition or gas generation rate necessary to satisfy an energy balance equation as gleaned from available experimental data. The apparent functional relationship between the electrical energy input and working fluid mass consumed is examined. As applied in this report, the inverse analysis of ETC gun firing data is essentially an energy balance between projectile kinetic energy, gas kinetic energy, and gas internal energy. Lagrange assumptions are made for the pressure gradient and gas velocity. Thermochemistry is assumed to be variable depending on the plasma energy to working fluid mass ratio. A sample database consisting of 20-mm and 30-mm gun firings is examined.
- Ammunition and Explosives