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A tandem-charge weapon is an explosive device or projectile
Projectile

A projectile is any object propelled through space by the exertion of a force, which ceases after launch. In a general sense, even a Football or baseball may be considered a projectile....
 that has two or more stages of detonation. It is effective against cage armor
Cage armor

Cage armor also known as bar armor, slat armor, and standoff armor is a type of vehicle armour designed to protect against anti-tank rocket-propelled grenade attacks....
 as well as reactive armor which is designed to protect an armored vehicle (mostly tanks) against anti-tank
Anti-tank warfare

Anti-tank refers to any method of combating military armored fighting vehicles, notably tanks. The most common anti-tank systems include artillery with a high muzzle velocity, missiles , various autocannons firing penetrating ammunition, and anti-tank mines....
 arsenal. The first stage of the weapon triggers the reactive armor of the target, limiting the attack's effectiveness. However, after the reactive armor has protected the vehicle from the primary attack, it is no longer "reactive" in that location (since reactive armour is primarily a one-time defense solution) and the location is left more vulnerable.






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A tandem-charge weapon is an explosive device or projectile
Projectile

A projectile is any object propelled through space by the exertion of a force, which ceases after launch. In a general sense, even a Football or baseball may be considered a projectile....
 that has two or more stages of detonation. It is effective against cage armor
Cage armor

Cage armor also known as bar armor, slat armor, and standoff armor is a type of vehicle armour designed to protect against anti-tank rocket-propelled grenade attacks....
 as well as reactive armor which is designed to protect an armored vehicle (mostly tanks) against anti-tank
Anti-tank warfare

Anti-tank refers to any method of combating military armored fighting vehicles, notably tanks. The most common anti-tank systems include artillery with a high muzzle velocity, missiles , various autocannons firing penetrating ammunition, and anti-tank mines....
 arsenal. The first stage of the weapon triggers the reactive armor of the target, limiting the attack's effectiveness. However, after the reactive armor has protected the vehicle from the primary attack, it is no longer "reactive" in that location (since reactive armour is primarily a one-time defense solution) and the location is left more vulnerable. The second detonation from the same projectile (which defines it as a tandem charge) attacks the same location as the first detonation where the reactive armor has been compromised. Since the regular armor plating is often the only defense remaining, the tandem charge (second detonation) has an increased likelihood of penetrating the armor.

The PG-7VR
PG-7VR

The PG-7VR is a tandem charge rocket propelled grenade warhead designed to penetrate up to 600 mm rolled homogeneous armour equivalence of explosive reactive armor and the conventional armor underneath....
 warhead for the RPG-7
RPG-7

The RPG-7 is a widely-produced, portable, Shoulder-launched missile weapon, anti-tank rocket propelled grenade weapon. Originally the RPG-7 and its predecessor, the RPG-2, were designed by the Soviet Union, and now manufactured by the Bazalt company....
 rocket launcher and the more modern RPG-29
RPG-29

The RPG-29 Vampir is a Russian man portable, shoulder fired anti-tank grenade launcher....
 rocket are examples of tandem charges. Additionally, many American missiles use the tandem charges because they were designed in the Cold War era to counter the reactive armor that was a common feature on Soviet tanks. Examples of American missiles that use tandem charges include the BGM-71 TOW
BGM-71 TOW

The BGM-71 TOW is an anti-tank guided missile. "TOW" stands for "Tube-launched Optically-tracked Wire-to-command-Link" guided Missile Set. The TOW was first produced in 1970 and is the most widely used anti-tank guided missile in the world....
 and the Hellfire
AGM-114 Hellfire

The AGM-114 Hellfire is a multi-platform, multi-target United States modular missile system. The name comes from the fact that it was originally intended to be a helicopter-launched fire-and-forget weapon ....
.

See also

  • Shaped charge
    Shaped charge

    A shaped charge is an explosive charge shaped to focus the effect of the explosive's energy. Various types are used to cut and form metal, initiate nuclear weapons, and penetrate armour....
  • HEAT
    Heat

    In physics and thermodynamics, heat is any transfer of energy from one body or thermodynamic system to another due to a difference in temperature....