Gun Tube Analysis Program (GTAP™) is a suite of codes consisting of the following modules to calculate:

CCET: Thermodynamic and transport properties for a mixture in chemical equilibrium and the chemical potential, B values, for the thermo-chemical erosion

MACE: Temperature profiles and thermochemical erosion

NOVA-XNBASE: The interior ballistics

MABL: Quasi-steady-state boundary layer heat transfer

GTNS: Transient simulation of fluid mechanics, chemical reaction, and projectile motion inside the gun barrel with compressibility effects