Study Test 1

Question 1

What are the different types of elevation gears?

Answer 1

1) Worm and Segment
2) Nut and Screw
3Arc and Pinion

Question 2

What are the different types of traverse gears?

Answer 2

1) Worm and Segment
2) Nut and Screw
3) Arc and Pinion
4) Rapson Nut and Screw

Question 3

What is Windage?

Answer 3

The difference of the calibre of the mortar tube and the calibre of the mortar bomb.

Question 4

Why is windage important ?

Answer 4

It allows a cushion of air to support the drop of the bomb down the tube.

Question 5

What names are given to the Rifling?

Answer 5

1) Lands

2) Goves

Question 6

How do you measure calibre?

Answer 6

Diameter of the bore from land to land

Question 7

Describe Calibre as a length?

Answer 7

Calibre of weapon along the total length of the barrel.

Question 8

What are the parts of the mortar?

Answer 8

1) Barrel
2) Bipod
3) Baseplate
4) Sights

Question 9

What are the parts of the mortar bomb?

Answer 9

1) The Body

2) Tail Unit

Question 10

Who was the monk?

Answer 10

Black Berthold

Question 11

What did black Berthold do?

Answer 11

He is credited with the concept of a gun.

Question 12

What was the first Fuze name?

Answer 12

Boxer Fuze

Question 13

Who invented the boxer Fuze?

Answer 13

Colonel Boxer

Question 14

Who is Shrapnel?

Answer 14

He is Henry Shrapnel, he fired cannon balls filled with shot that burst in mid air.

Question 15

How do you achieve obturation with a caseless weapon?

Answer 15

1) Driving band
2) Obturation Ring
3) Interupted/Sliding Screw breeches

Question 16

What is shot start?

Answer 16

When the projectile starts to move down the barrel.

Question 17

How can the life of a barrel be extended?

Answer 17

1) Cooler burning propellant
2) Barrel cooling techniques
3) bore surfaces/finishes such as crome & molybdenum.

Question 18

Name the types of firing mechanisms?

Answer 18

1) Percussion
2) Electric
3) Percussion and Electric

Question 19

Henry Martini Problems?

Answer 19

1) Excessive fouling due to black powder

2) Extraction issue due to weak cart case

Question 20

What are the early types of gun barrel?

Answer 20

1) Iron
2) Cast Iron
3) Bronze

Question 21

What are the barrel construction methods?

Answer 21

1) Wire wound
2) Built up Barrels
3) Loose Barrel/Loose Liner
4) Composite Barrel
5) Monobloc

Question 22

What are the different early methods of Rifling?

Answer 22

1) Hexagonal Barrel and Projectile
2) Studded Projectile
3) Lead Coated Projectile
4) Oval Rifling
5) French Rifling
6) Vavassures driving band

Question 23

What are the 8 Tasks of IDF?

Answer 23

1) Suppression
2) Neutralisation
3) Destruction
4) Harrassment
5) Illumination
6) Intradiction
7) Counter-Battery Fire
8) Coordination of Fire

Question 24

Define Ammunition?

Answer 24

All material used in discharging firearms or weapons that throw projectiles, shot, shrapnel, bullets, cartridges and the means of igniting and exploding them as primers & fuzes. Chemicals, bombs, grenades, mines and pyros are also ammunition.

Question 25

Define Ordnance?

Answer 25

Provides a vessel to contain force of burning charge. Energy produced is transmitted safely and predictably to projectile. Imparts direction and stability

Question 26

What are the advantages of mortars?

Answer 26

1) Moderate Cost
2) Low weight
3) Simplicity
4) High angles and rates of fire

Question 27

Define FFR?

Answer 27

Tube open at one end, fuel is burnt and escapes out the open end. Momentum causes and equal and opposite reaction at closed end.
Projectile flight path cannot be changed

Question 28

What are 3 types of fixes used in Artillary HE?

Answer 28

1) Air Burst
2) Ground Burst
3) Delayed

Question 29

What are the 5 requirements of Artillary?

Answer 29

1) Protection
2) Range
3) Accuracy and Consistency
4) Ammo
5) Mobility

Question 30

What are the two methods of post firing boost?

Answer 30

1) Base Bleed

2) Rocket assist

Question 31

What do they improve?

Answer 31

1) Increase Range

2) Improve Accuracy and Consistency

Question 32

What are the disadvantages of fix propellant?

Answer 32

1) Flat trajectory can’t reach behind hills or into valleys

Question 33

What is the reason consistency varies?

Answer 33

1) Ballistic Coefficient
2) Laying, ramming and wear of the gun
3) Muzzle Velocity
4) Weather Conditions

Question 34

What is Illum designed to do?

Answer 34

It is designed to be used at night to illuminate the surroundings with white light

Question 35

What is HE frag designed to do?

Answer 35

1) Disperse high velocity Fragmentation

2) Effect is accompanied by blast

Question 36

What does FAB achieve?

Answer 36

1) Longer Impulse

2) Blast Overpressure

Question 37

What is the difference between carriage and mount?

Answer 37

• Carriage travels on wheels and fires with its wheels in contact with the ground
• mount does not fire with its wheels touching the ground.

Question 38

What is smoke designed to do?

Answer 38

1) Screen
2) Blind
3) Mark

Question 39

How does the Recuperator work?

Answer 39

Mechanism that returns the recoiled parts back to their original position and holds them there until the next round is fired

Question 40

Charge to weight ratio of a mortar and artillery is?

Answer 40

1) 20%

2) 15%

Question 41

Fragmentation from HE can be influenced by what?

Answer 41

1) Bomb wall produced in metal good frag qualities

2) Thin walled with liner of pre cast frag