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Internal ballistics (also interior ballistics), a subfield of ballistics, is the study of the propulsion of a projectile. In guns, internal ballistics covers the time from the propellant's ignition until the projectile exits the gun barrel. [1]
Studying internal ballistics is all about accuracy—what accuracy is, where it comes from, and how the shooter can improve it. It's possible for the shooter to do something about accuracy problems once he or she understands the origins of their problems and takes the right steps to correct them.
Interior ballistics deals with the interaction of the gun, projectile, and propelling charge before emergence of the projectile from the muzzle of the gun. Exterior ballistics encompasses the period from when the projectile has left the muzzle until impact with the target.
Internal ballistics is the study of what happens within the barrel of a weapon from the moment the firing pin hits the primer to the time the bullet exit from the barrel. It includes primer ignition time, primer pressure, time curves, and temperature, etc.
Internal Ballistics. When you really do “Roll your own” Internal Ballistics deal with everything that happens from the chamber to the end of the barrel. Things like powder, bullets, brass and primers all are crucial variables that affect the performance of the cartridge and can impact other areas.
The field of Interior Ballistics deals with propulsion or acceleration of projectiles via various energy forms and mechanisms including chemical propellant, compressed gas, electromagnetic, gas combustion and many more.
Determining maximum gas pressure, the gas-pressure curve and the velocity of the projectile—especially muzzle velocity—is often considered the central problem of interior ballistics. Download to read the full chapter text.
Interior ballistics is the applied physics required to impart motion to a projectile inside a gun tube. Despite its long history and wide application, active research continues with efforts to build more realistic models of the complicated chemical, thermodynamic, and dynamic processes involved. The classic interior ballistics
So to sum up, Internal Ballistics is the study of projectiles from the moment the firing pin strikes the primer, to just before it exits the barrel. The rifling twist rate determines how stable (or unstable) a projectile is.
Interior ballistics: The characteristics of explosive materials (detonating agents and propellants), methods for calculating gas pressure and the velocity of projectiles and rockets during the acceleration phase, alternative systems for accelerating projectiles and the acceleration of fragments.