Shaped Charge Attack Flashcards
Definition of a shape charge
A charge shaped so as to concentrate its explosive force to a particular direction.
The Munroe effect is named after?
Charles Munroe- 1888
The effect of the high energy jet on armour?
Kinetic energy involves the SQUARE of the velocity - even though its mass is small.
Overstrains the plate being attacked by exerting intense local pressure.
The pressure forces the metal away radially from the point of impact and deforms it permanently
Charge must be initiated from the?
Intitated from the Rear
Explain the shape charge jet effect
A gaseous jet, with metal particles from the liner flowing in it, has an extremely high velocity
At its tip the jet velocity is of the same order as the velocity of detonation of the high explosive.
How shaped charges achieve their effect?
by intense concentration of kinetic energy
Target effects after penetration of jet.
Unconsumed part of jet.
Fragments of metal (spalling)
The jet has 4 characteristics.
Narrow and concentrated
High velocity high temperature with metalic content.
Damage any person or sensitive store in its path
Expends residual energy on opposite site of vehicle.
Penetration is proportional to?
The cone diameter.
Double cone diameter =double penetration
Liner materials used?
Copper is most common
Steel reduced penetration and corrodes in long-term storage
Aluminium reduced penetration, increased thermal effects
Stand off distances is the distance between the front face of the shaped charge liner and the target plate at the moment on Initiation of the HE.
2 zones for stand off
2 Cone diameter - little degradation
5 cone diameter- peak performance
Shaped charge
Factors affecting performance
Rate of spin Susceptible to centrifugal force induced by the spin of a projectile.
Recent research has indicated that improvements in penetration can be achieved by minimal spin in a certain direction.
Spin compensation can be achieved by
Slipping bands
Fluted liners
Spin compensated liners
Plate charges know as
Miznay Schardin effect
Plate charge
EFP
Self forging fragment SFF
