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Mortars > Service Ammunition > Flashcards

Service Ammunition Flashcards

(49 cards)

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1
Q

Name 3 types of ammunition

A
  1. HE
  2. WP
  3. Illum (White/IR)
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2
Q

What is the lethal radius of a HE round?

A

40m

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3
Q

What is the casualty radius of a HE round?

A

190m

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4
Q

What ground conditions can effect a HE round when it explodes?

A

Wet or Dry

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5
Q

What fuse is a HE round fitted with?

A

L127A3/4

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6
Q

Where is the fuse on a mortar round?

A

Silver bit at the top

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7
Q

Colour of a HE round and stencil writing?

A

Deep Broze Green and Yellow Stencil Writing

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8
Q

How heavy is a HE round?

A

4.5 kg

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9
Q

Does the HE round have a discarded Obturating Ring?

A

Yes

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10
Q

How much RDX TNT mix does a HE round have in it?

A

0.733kg

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11
Q

Name 3 characteristics of the tail fin

A
  1. Centre tube
  2. Primary cartridge
  3. Flash Holes
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12
Q

Two types of impact of the L127A3/A4 fuse

A

Super Quick (SQ) or Slight Delay (0.05) Sec

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13
Q

What distance does the L127 A3/4 round arm its self?

A

73-292m

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14
Q

How far does the armoured striker pertrude?

A

4mm

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15
Q

How much does a Brown Ammo Box of HE weigh?

A

32.8kg

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16
Q

How much does a greeny of HE weigh?

A

11.8kg

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17
Q

What fuse is a WP round fitted with?

A

L127A3/A4

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18
Q

Name the identifying features of a WP round

A

Has a small step to identify at night, light green in colour, red hazard band and yellow stencil and discarded Obturating ring

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19
Q

How much does a WP round weigh?

A

4.5kg

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20
Q

How much does a brown ammo box of WP weigh?

21
Q

What is the weight of a WP greeny

22
Q

There are 5 WP saftey rules. Name some

Study These Flashcards
A
  1. WP must be checked regularly for leaks
  2. Done leave in direct sunlight, provide shade
  3. WP Must be stacked seperate
  4. Provide shelter sheet, must be raised for ventilation
  5. Any unpacked rounds that are dripped, must be put to one side and destroyed
23
Q

What is the range of the Illum L54A1 round?

24
Q

What candle power is the Illum round equivalent to?

25
Burn time of Illum?
33 seconds
26
What the the burst height of Illum?
500m
27
How far does the Illum round light up?
400m
28
What is the rate of decent for Illum?
3.7mps
29
What fuse does Illum use?
DM93 Fuse
30
How heavy is an Illum round?
4.6kg
31
What is the colour, and writing of the Illum round.
White and Black Stencil
32
What are the two main difference between a L54A1 Illum round vs a L58A1 IR Illum?
2 minute burn time and black band around the round
33
What rounds use the DM 93(M) fuse?
Illum and WP
34
How heavy is the brown ammo box of Illum?
35kg
35
How heavy is an Illum greeny?
12.3kg
36
What type of fuse does the M73A1 have?
Electrical and Mechanical Proximity Fuse
37
What is the burst height of the M73A1 fuse?
4.2m
38
How do you set the M73A1 Fuse?
By hand
39
What is the M73A1 Proxy Burst Height?
6081mm
40
Is there a saftey on the M73A1 Fuse?
No safety fitted
41
What shouldn’t you do to the M73A1 round?
Remove the rubber cap
42
Name 4 characteristics of the primary charge?
1. Aluminium tube 2. Waterproof 3. Firing Cap at the bottom (is fully enclosed) 4. Tail Fins
43
3 things you look for with charge selection
1. It’s a MK4 Charge System (UK) 2. Has 6 Augmenting Cartridges 3. Is serial numbered to the ammunition nature
44
Explain the action on firing
1. The round slides down the tube under its own weight 2. The primary charge hits the firing pin 3. The flash passes through the flash holes and ignites the augmenting cartridges 4. These burn rapidly and causes gasses that push the round out of the barrel
45
Name the characteristics of a L37/L38 drill round
Dark Blue in colour, White stencil and says Inert primary Cartridge
46
HOW DO YOU RECONDITION A ROUND AT THE END OF FIRING?
- Check saftey pin is in position - If it has been removed, place for destruction - Don’t re-pin
47
How do you recondition a fuse
- Must be set to SQ or S - On a M734A1 round it must be set to 6081 prox
48
What is the magnification of a C2 sight?
1.7x magnification
49
What is the field of view for a C2 sight
180mils

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