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External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight. The projectile may be powered or un-powered, guided or unguided, spin or fin stabilized, flying through an atmosphere or in the vacuum of space, but most certainly flying under the influence of a gravitational field.
External ballistics is the part of the science of ballistics that deals with the behaviour of a non-powered projectile in flight. External ballistics is frequently associated with firearms , and deals with the unpowered free-flight phase of the bullet after it exits the gun barrel and before it hits the target, so it lies between transitional ...
Often broken down into internal ballistics, transitional ballistics, external ballistics and terminal ballistics. Battle rifle: A service rifle capable of semi-automatic or fully automatic fire of a full-power rifle cartridge. Bayonet lug: An attachment point at the muzzle end of a long gun for a bayonet.
The projectile's motion in flight is known as its external ballistics, and its behavior upon impacting an object is known as its terminal ballistics. A bullet can be made of virtually anything (see below ), but lead is the traditional material of choice because of its high density, malleability , ductility , and low cost of production .
As an example, a bullet with a mass of 160 grains (10.4 g) and a diameter of 0.264 in (6.7 mm), has a sectional density (SD) of: 4·(160 gr/7000) / (π·0.264 in 2 ) = 0.418 lb m /in 2 As another example, the M107 projectile mentioned above with a mass of 95.2 pounds (43.2 kg) and having a body diameter of 6.0909 inches (154.71 mm) has a ...
Ballistics (gr. ba'llein, "throw") is the science that deals with the motion, behavior, and effects of projectiles, especially bullets, aerial bombs, rockets, or the like; the science or art of designing and hurling projectiles so as to achieve a desired performance.
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Transition ballistics, the study of the projectile's behavior when it leaves the barrel; External ballistics, the study of the passage of the projectile through space or the air; Terminal ballistics, the study of the interaction of a projectile with its target; Ballistic conduction, conduction of electricity with negligible charge scattering