Test Four

Question 1

What are the different types of corrosion

Answer 1

1. Rust
2. Aluminum oxidisation
3. Muzak contamination
4. Zinc exudation
5. Cupourus oxide contamination

Question 2

What are the different types of metal defects

Answer 2

1. Chemical

2. Mechanical

Question 3

What are the 4 different types of filling used in projos

Answer 3

1. Casting
2. Pressing
3. Extruding
4. Preforming/concooning

Question 4

What are the 3 methods of casting explosinves

Answer 4

1. Pouring
2. Creaming
3. Liquid and biscuits

Question 5

Driving bands are one use of copper in ammo where the rest

Answer 5

1. SAA jackets
2. Shape charge liners
3. Dets
4. Cart cases (brass)

Question 6

What is brass?

Answer 6

70% copper

30% zinc

Question 7

What are 3 different types of QF cart cases/systems

Answer 7

Separate
Semi fixed
Fixed

Question 8

What is AO and BO

Answer 8

AO = ammunition obutration cart case seals
BO = breach seals obutration

Question 9

What are the different ways too ignite tracers

Answer 9

Direct ignition

Propellant ignition

Question 10

How are cart cases stuck to projos

Answer 10

Conning
Cannularing
Combo of Cannularing and conning

Question 11

Why are driving bands used

Answer 11

Center projectile in the bore
Obturation
Stops slip back when rammed in barrel at high angle

Question 12

How are driving bands stuck on projos

Answer 12

Knurling

Wavey ribs

Question 13

What are 2 types of primers

Answer 13

Percussion

Electric

Question 14

What are 2 types of recolis rifle rounds

Answer 14

Blow out disc

Perforated cart case (106 recolis rifle, chinease recoiless)

Question 15

How are promo shells made

Answer 15

Casting
Forging
Extruding

Question 16

What is in a conducting cap electric and how’s it work

Answer 16

1. Base
2. Pole
3. Cap
4. Magazine

Electric current passed up pole to cap and passed through mixture causing heating and ignition

Question 17

What are the classifications of tracers

Answer 17

Tracer projectile 
Tracer and igniter projectile (self distruct)
Integral tracer (small arms)

Question 18

The 1960s explorer system had 3 main benifets what are they

Answer 18

Ease of removal
Setback forces eliminated
No migration of explosive.

Question 19

Requirments of a cart case

Answer 19

Holds the primer
Provides obturation
Protection of contents
Ease of extraction

Question 20

What is a non permanent seal

Answer 20

Luting

Question 21

Name the types of natural fibres which may be used with ammunition explosives

Answer 21

Cellulose
Silk
Wool
Rubber

Question 22

What are the types of bagged charges

Answer 22

Equal cylinder
Steam and ring
Unequal cylinder
Steam and segmented

Question 23

What are the types of QF cart systems?

Answer 23

Fixed cart and promo joined
Semi fixed parts mated before ramming
Seperate mated in gun

Question 24

What are the types of metal defects

Answer 24

Chemical

Mechanical

Question 25

Why do we use brass in cart cases

Answer 25

Does not corrode and give abrasive particals Performs well in most equipment Know it's mettelurgy and techniques are well know

Question 26

What advantage does a combustible cart case offer

Answer 26

All helps ballistics

Question 27

Attaching cart case too projo

Answer 27

Cone Cannaluring Cone - cannaluring

Question 28

How are tracers ignited

Answer 28

Direct | Propellants

Question 29

Methods of sealing tracer

Answer 29

Brass or celluloid discs Nitroglycerin and carbamite Bakelite discs

Question 30

How are tracers fitted to projectiles

Answer 30

Externally to the base Internally to the spigot Grub screwed passing through tracer body

Question 31

Design requirements of driving band

Answer 31

...

Question 32

What are the classifications of weapon shells

Answer 32

Operational Weapon functioning/inspection Training

Question 33

What are the four parts in a conducting caps

Answer 33

Base, pole unit, cap, magazine

Question 34

What are the design requirements for driving bands

Answer 34

Must not alter ballistics No excessive friction in the bore Must remain attached Simple to fit