A projectile is any object propelled through space by the exertion of a force, which ceases after launch. In a general sense, equals a football or baseball may be considered a projectile. May damage (injury, property damage) to a person, animal or object it hits, depending on factors including size, shape, speed and toughness. Consequently, most projectiles are designed as weapons in practice. Arrows, darts, spears and similar weapons are turned on using pure mechanical force applied by another solid object, apart from the pitch without the tools, mechanisms include catapults, slingshot, and bow. Blowguns and pneumatic rifles use compressed gases, while most other weapons and firearms use the expanding gases liberated by sudden chemical reactions. Gas light weapons use a combination of these mechanisms. Railguns use electromagnetic fields to provide a constant acceleration along the entire length of the device, greatly increased muzzle velocity. Some projectiles provide propulsion during (part of) the flight by means of a rocket engine or jet engine. In military terminology, a rocket is unguided, while a missile is headed. Note the two meanings of "rocket" ICBM is a missile with rocket engines. Many missiles, eg shells, containing an explosive charge. With or without a projectile explosive charge can be designed to cause special damage, eg fire (see also Early thermal weapons) or poisoning (see also poison arrow). Projectiles that do not contain an explosive charge called kinetic projectile, kinetic energy weapons, kinetic warhead or kinetic penetrator. The classical kinetic weapons are energy projectiles such as rocks and dull shot round, highlighted by such arrows, and some indicated by such bullets. Among the missiles that do not contain explosives are railguns also, coilguns, total drivers, and kinetic energy penetrators. All these weapons work achieving a high muzzle velocity (hypervelocity), and shock to their objective, releasing kinetic energy. Some kinetic weapons for targeting objects in spaceflight are anti-satellite weapons and ballistic missiles. Since they need to achieve high speed, however, can destroy their target with its kinetic energy released only; the explosives are not necessary. Compare the energy of TNT, 4.6 MJ / kg, the energy of a kinetic kill vehicle with a closing speed of 10 km / s, which is 50 MJ / kg. This saves costly weight to be measured detonation is not the right time. This method, however, requires direct contact with the target, which requires more accuracy. With regard to missile weapons, the Arrow missile and MIM-104 Patriot have explosives, but kinetic energy interceptor (KEI), Exo-Atmospheric Projectile Lightweight (the SALTO, consider RIM-161 Standard Missile 3), and THAAD being become not (see Agency Missile Defense). A kinetic projectile can also drop the aircraft. This is applied by replacing the explosives of a regular bomb eg by concrete, for a precision strike with less collateral damage. A typical bomb has a mass of 900 kg and an impact velocity of 800 kilometers per hour (220 m / s).Also sought to train the act of dropping a bomb with explosives. [1] This method has been used in Iraqi Freedom operation and subsequent military operations in Iraq coupling specific training bombs with JDAM GPS-filled steering kits, attack vehicles and other targets relatively "soft" located too close civil structures for the use of conventional high explosive bombs. A hypothetical kinetic weapon that travels in a significant fraction of the speed of light, usually found in science fiction, calling the killing relativistic vehicle (RKV). Ballistics analyze the projectile trajectory, the forces acting on the projectile, and the impact of a projectile into a target. A guided missile is not called a projectile. An explosion, whether or not a weapon, does act as projectiles ruin multiple high speed. An explosive weapon, or the device can also be designed to produce many shells by the disintegration of the roof, these high velocity fragments are called correctly. The projectile of the term also refers ANY weapons or other objects thrown, thrown or otherwise directed to enemies in video games or computer games. ..

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