81mm Mortar Weapon System

Question 1

What is the name of the barrel used on the 81mm

Answer 1

L16 A2

Question 2

What is the weight of the L16 A2 barrel?

Answer 2

13kg

Question 3

What are the training restrictions of the L16 A2?

Answer 3

The barrel is limited to 90 rounds at charge 6, it must then be allowed to cool for 35 minutes. N/A from charge 1 to 5.

Question 4

What is the name of the bipod?

Answer 4

L5 A5

Question 5

What is the weight of the L5 A5?

Answer 5

12.9kg

Question 6

What is the elevation of the L5 A5?

Answer 6

800mils - 1515mils

Question 7

What is the traversal range of the L5 A5?

Answer 7

200mils (100mils each side)

Question 8

What is the weight of the base plate?

Answer 8

11.6kg

Question 9

What is the diameter of the baseplate?

Answer 9

55cm

Question 10

What oil is used for cleaning?

Answer 10

OX18 / OX24

Question 11

What is the grease used?

Answer 11

XG 279

Question 12

What is the weight in box of the C2 sight?

Answer 12

3.8kg

Question 13

What is the field of view of the C2 sight?

Answer 13

180mils

Question 14

What magnification is the C2 sight?

Answer 14

x1.7

Question 15

By what does the periscope raise the sight line?

Answer 15

356mm

Question 16

At what does barrel obstruction occur?

Answer 16

Between 4600 - 5900mils

Question 17

Three ways to overcome barrel obstruction?

Answer 17

Periscope
Rear aiming post
Offset

Question 18

When should we sight test?

Answer 18

Before live firing
Before ops
When accuracy is in doubt
After repairs to instruments/bipod

Question 19

What are the trilux safety rules?

Answer 19

Don’t intake gas
Don’t touch broken glass
Open windows and doors, turn off gas/flame heaters
Extinguish all naked flames and cigarettes
Inform medical officer and armourer immediately

Question 20

Aim of mortar fire

Answer 20

The aim of mortar fire is to support furemdly forces by killing the enemy, neutralise his fire and deny him use of the ground.

Question 21

Reason for adjusting bearing scales

Answer 21

The reason for adjusting bearing scales is so that the C2 sight reads the same grid bearing along which the barrel points.

Question 22

Aim of adjustment

Answer 22

The aim of adjustment is to obtain accurate charge, bearing and elevation to the target with the minimum expenditure of time and ammunition so effective fire can be brought to bear on that target.

Question 23

10 point check

Answer 23

Base plate socket has been correctly aligned.
The breach plug is in position and locked, and that the firing pin is upper most.
Barrel clamp is correctly positioned and locked. (On “soft” if a L5 A3)
Sights locked, bubbles level, elevation is at 1100 and periscope bracket is fitted.
Buffers central and about 200mm of elevation showing.
Leg locking hand wheel is tight.
Bipod feet are parallel with the line of fire.
Aiming post has been positioned correctly.
Muzzle covers on.
Ammo prepared properly.

Question 24

Wet weather precautions

Answer 24

Muzzle cover on.
Keep bore dry and clean.
Prepared ammo must be returned to the greenie tail fin first out of prevailing winds.
Cover mortar (poncho)
Check flash holes are clear of ice and water.

Question 25

Fire power characteristics (HALFABECA)

Answer 25

High rate of fire Accuracy Long time of flight Flexibility Ability to fire on obscure targets Beating zone Effects of damp Consistency Ammunition

Question 26

Deployment characteristics (Her majesty's government values women)

Answer 26

High trajectory Mobility Ground Vulnerability Weight of stores

Question 27

Rules of observation (RSM wants men)

Answer 27

Remember time of flight. Smoke where observation of HEA is difficult. Measure corrections onto line with binos or hand angles; don't guess. Watch for fall of shot with naked eye then use binos/laser. MKA formula.

Question 28

Reasons for adjustment (HAM with cheese)

Answer 28

Human error Altitude Meteor Wind Charge temperature

Question 29

Methods of adjustment (BCD)

Answer 29

Bracketing Direct Creeping

Question 30

Considerations before adjustment (she wears little pink crotchless knickers)

Answer 30

Safety of friendly forces Wind Lines of fire Problem targets Commanders adjustment policy K to target

Question 31

Method of adjustment

Answer 31

Bracketing Creeping Direct Fall of shot mode

Question 32

Use of smoke (STRICT)

Answer 32

Smoke screen (NSS - normal smoke screen, 5 RFFE R4) Target indication Reference point Incendiary Casualty Target adjustment

Question 33

Factors affecting smoke (WITH G)

Answer 33

Wind Ideal weather (cool, damp, cloudy day with 6 - 15knts, 7 - 17 mph) Temperature Humidity Ground

Question 34

Use of Illum

Answer 34

General General surveillance Co-ord illum Harassment

Question 35

Selection of a mortar line (Pretty little girls always come home crying)

Answer 35

Protection Location Ground Alternative positions Communication Hides Concealment