EO Terminology

Question 1

List three categories of explosions

Answer 1

• Chemical
• Mechanical
• Atomic

Question 2

Describe the velocity of detonation (VoD)

Answer 2

The speed in which a shockwave passes through an item (explosive material)

Question 3

What are there causes of partial detonation?

Answer 3

• Poor contact with donor charge
• Inadequate shock
• EO Deterioration

Question 4

Explain the term extrustion

Answer 4

The expansion of the HE fill forces the sealing compound out of the thread. Looks like a wax and no damage to the fill occurs under 33 Degree C

Question 5

What are the two categories of High Explosives cane divided into? Provide two examples of each

Answer 5

• Primary (Detonators/Lead Azide)

- Secondary (PE4/Comp B)

Question 6

Explosive trains intended to bring about the detonation of a HE charge are called what?

Answer 6

-Disruptive

Question 7

List three (3) factors that have an influence on the sensitivity and detonating velocity of an explosive?

Answer 7

• Explosive Density
• Environmental temperature
• Size of the crystals

Question 8

What is the main difference between Monopropellants and Bipropellants

Answer 8

• Monopropellants (Fuel and oxidiser and in same liquid)

- Bipropellants (Fuel and oxidiser in separate liquids)