Description
An RPG comprises two main parts: the launcher and a rocket equipped with a warhead. The most common types of warheads are high explosive (HE) or high explosive anti-tank (HEAT) rounds. These warheads are affixed to a rocket motor and stabilized in flight with fins. Some types of RPGs are single-use disposable units similar to the RPG-22; others are re-loadable, such as the Soviet RPG-7.
The launcher is designed such that the rocket exits the launcher without discharging an exhaust that would be dangerous to the operator. In the case of the RPG-7, the rocket is launched by a gunpowder booster charge, and the rocket motor ignites only after 10 metres. In some other designs, the propellant charge burns completely within the tube.
An RPG is an inexpensive way to deliver an explosive payload over a distance with moderate accuracy. Substantially more expensive, wire-guided rockets are used when accuracy is important; these rockets trail a thin wire behind them during firing and steering corrections can be sent by the operator (see Missile guidance) while in flight, such as in the AT-3 Sagger.
Read more about this topic: Rocket-propelled Grenade
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