30 - Fragmentation Warheads

Question 1

What is Frag?

Answer 1

Kinetic energy of warhead pieces

Question 2

Characteristics of an Isotropic Warhead

Answer 2

Spreads fragments evenly across a sphere

Sphereical spread diminishes N_hitsIso

Question 3

Characteristics ofa Non-isotropic warhead

Answer 3

Directs fragments into a non-spherical areafrom the warhead
CEP: Circular Error Probable (m) - used to predict frag impact points

Question 4

What is CEP?

Circular Error Probable

Answer 4

Radius of a circle about the aim point inside which there is a 50% chance that the weapon will hit

Question 5

What is Fragment Initial Velocity (V₀)

Answer 5

A function of:
- Heat of explosion per unit mass
- Ratio of charge to casing masses

Metal Mass (M) - mass of casing
Charge Mass (C) - mass of insides

Question 6

Configuration Constant (K)

Answer 6

Isotropic - 0.6
Directional - 0.33

Question 7

What is Fragment Impact Velocity (V_s)

Answer 7

How hast the fragments travel after explosion
Velocity is always reduced by drag

Smaller surface area is better
Heavier fragment mass is better