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dimanche 9 novembre 2014

Info Post
By Christa Jarvis


Ammunition is a military term for the projectile and propellant. The term is also used for explosives (cheap ammo). Cartridges are munitions, ie consisting of a casing containing propellant charge and detonating cap and a fitted projectile. Ammunition is used in weapons in size from guns with a caliber of 2 mm (called Hummingbird), machine guns, rifles and machine guns and up to 105 mm howitzer or recoilless gun.

The bullets come in contact with objects (stone, tree, wall, surface water) are likely to ricochet and know important changes in trajectory. It a significant source of accidents. The damage inflicted by a firearm depends on the weapon but also the ammunition. Issues related to damage caused by munitions vary depending on the context of use. In civilian areas (police, self-defense) commitments usually take place at very short range and stopping power is fundamental.

Again, m is the mass of ball and its speed v. Speed has no more influence on the decline munition developed by mass. Note that the momentum felt from the ball is similar and even greater if we take into account the friction that slow the ball on its way to printed target. In short, it only in movies where a shot shotgun propels its target three meters back. A weapon with ammunition would develop such momentum would suffer the same fate to shooter.

Ammunition is usually designated by a corresponding almost always in class (at least approximate) number of projectile followed by a proper name. A second more stringent rating system expresses the gauge and length of case, plus possibly some letters establishing various characteristics.

Ammunition, especially for handguns, is specified by a large variety of names with goals from metric and imperial as inches and pounds. Components of ammunition can divided into following categories: Explosives and propulsion means projectiles of all kinds. Modern ammunition includes not only artillery and mortar shells, but increasingly homing bombs, rockets and missiles. A munition is an assembly for loading a gun. It consists of a minimum of propellant and one (or more) projectile (s) (shot, bullet, shell). From the twentieth century, the ammunition can self-propelled (eg. Rocket, missile) and possibly guided remotely, or able to move to a heat source or another.

The gravity causes the projectile to ground and the trajectory of a projectile in form of a falling curve. The long distance shots require compensate for this by aiming above the target. The ball will be more speed, more seem flat trajectory for a given distance. The wind will be compensated in same way by shifting the line of sight to side. For long-range shots, it will also consider the Magnus Effect and Coriolis force.

For reasons of safety and danger, military munitions are stored in places called ammunition depot. The first gun fired simple stones or iron shot recovered in forges (before it was banned). Spherical balls were quickly invented cast in lead and lead alloy of antimony and arsenic to harden. The powder was first charged separately by mouth of gun or gun or cannon.

There are many panel discussions on the effectiveness of munitions. Multiple approaches are, for example tests in homogeneous blocks (specific gel or clay) to study the effect of impact, statistical studies and medical studies on actual cases. Several explanations are usually advanced and are hotly debated.




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