SA1 Directed Study

Question 1

Two main purposes of smoke?

Answer 1

Screening and signalling

Question 2

4 types of modern smokeless propellants

Answer 2

Single Double Triple

Composite

Question 3

2 types of explosive Initiators

Answer 3

Detonators/ Disruptive
Ignitors/ Igniferous

Question 4

What does ASA (F2 detonator) composition consists of?

Answer 4

Lead Azide - 68%
Lead Styphnate - 29%
Aluminium powder - 3%

Question 5

Types of Low Explosives

Answer 5

Gunpowder or Black Powder
Propellants
Pyrotechnics

Question 6

Examples of Secondary High Explosives

Answer 6

CE (Composition Exploding) or Tetryl
TR1 (Tetryl Replacement 1)
TNT
RDX
PETN
Picric Acid
Comp B
PE4
C4
HMX

Question 7

Composition of TR1

Answer 7

RDX 98.75%, Wax 1.25%

Question 8

Composition of Comp B

Answer 8

RDX 59.5%, TNT 39.5%, Wax 1%

Question 9

List the 5 purposes of additives used in HE

Answer 9

Increase sensitivity
Improve stability
Increase blast effects
Improve moldability
Decrease sensitivity

Question 10

Types of de-sensitisers

Answer 10

Wax
Aluminium
TNT

Question 11

Composition of PE4

Answer 11

RDX 88%
Plasticiser 12%

Question 12

Shapes of propellant

Answer 12

Cord
Flake
Strip/ Ribbon
Tubular
Cogged
Star Centre

Question 13

Types of Additives used in propellants

Answer 13

Remember CDF LAMPS
C - Coolants
D - De-coppering agents
F - Flash inhibitors
L - Surface lubricants
A - Anti-wear additives
M - Surface moderants
P - Plasticisers
S - Stabilisers

Question 14

Types of service propellant

Answer 14

Solid
Liquid

Question 15

2 properties of smoke compositions

Answer 15

Immediate in effect
Persistent

Question 16

Requirements of smoke compositons

Answer 16

Tactical screening
Signalling

Question 17

Caps compositions consist of 3 things?

Answer 17

Primary explosive

Sensitiser

Oxidiser

Question 18

Characteristics of Priming compositions

Answer 18

Easily ignited
Not burn to quickly or violently
Generate high heat

Question 19

What does guncotton consist of ?

Answer 19

Nitrocellulose
Pitric acid
Cotton fibres

Question 20

Pyrotechnic effects

Answer 20

Heat
Light
Smoke
Sound

Question 21

Additives used in pyros

Answer 21

Red - Strontium
Yellow - Sodium
Green - Barium
White - Various Nitrates

Question 22

Definition/ purpose of delay compositions

Answer 22

To provide a pyrotechnic delay between two igniting or explosive events.

Question 23

2 types of signal composition

Answer 23

Ones that produce light of a distinctive colour
Ones that produce coloured smoke

Question 24

2 incendiary metals

Answer 24

Aluminium
Magnesium

Question 25

Define Igniter Compositions

Answer 25

Mainly used for propellant or pyrotechnic systems. They produce hot flames, usually accompanied by sparks and hot gasses, for relatively short times.

Question 26

Additives used in HE

Answer 26

Sensitisers
De-sensitisers
Aluminium
Stabilisers
Plasticisers
Taggants