IBHVG2: Mortar Simulation With Interior Propellant Canister
Final rept. Jun-Dec 2005
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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A method has been implemented for the Interior Ballistics of High Velocity Guns, Version 2 IBHVG2 simulation program to model mortar systems, including an enclosed high-pressure igniter canister. The application allows initial pressurization of the canister until interior pressure reaches a force high enough to rupture a burst diaphragm. Combustion gases are then released to the larger main chamber to accelerate the projectile or to ignite additional propellant for the ballistic cycle. The canister may release it contents through a burst disk directly and completely into the main chamber or through vent holes controlling rate of exhaust. Gas and particle flow through vents is regulated via discharge coefficients, which the modeler may use to closely approximate experimental mortar data.