Interior Ballistics Online

: Must be high enough for velocity but below the "burst limit" of the barrel.

: The propellant is completely consumed, but the high-pressure gas continues to expand and push the projectile until it leaves the muzzle. ⚙️ Key Technical Factors

: Controlled by the chemical composition and the geometry of the grains (e.g., tubes, balls, or perforated cylinders). Interior ballistics

: From the strike of the firing pin to the moment the propellant is fully ignited and pressure begins to build.

: Often coupled with ballistic codes to study how the physical structure of the barrel deforms under pressure. : Must be high enough for velocity but

: Simplified "zero-dimensional" codes (like IBHVG2 ) that calculate average pressure and velocity. They are fast and ideal for initial design.

Modern ballistics relies on computer simulations to predict performance without expensive and dangerous live-fire testing: : From the strike of the firing pin

: Highly complex 2D or 3D simulations (like NGEN3) that account for gas flow, heat transfer, and pressure waves.