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ATO 2024 > Mortars > Flashcards

Mortars Flashcards

1
Q

What are the two variants of fill used in the CART 60mm MORT HE M768 W/FZ PD M783 (with NEQs)?

A

PAX 21 (CAN) NEQ 0.400
COMP B (US) NEQ 0.403

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2
Q

Parts of a CART 60mm MORT IR ILLUM M767 W/FZ MTSQ M776

A
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3
Q

Name the parts of the CART 81mm MORT SMK RP M819 FZD MTSQ M772:

A
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4
Q

What is the luminosity (in candela) and burn time for a CART 60mm MORT IR ILLUM M767 FZD MTSQ M776?

A

500 candela for 40 sec burn time

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5
Q

The M722A1 FZD PD M783 has what type of fill?

A

White Phosphorous (WP)

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6
Q

How many M819 rounds are required in a volley to ensure an effective screen?

A

Three

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7
Q

What 60mm mortar is designed as a low cost full range practice alternative to HE rounds?

A

M769

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8
Q

What special restriction is placed on the firing of the M853A1?

A

Mortar is prohibited from being fired at 0 Charge (0 augmenting charge).

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9
Q

What is the payload of the CART 81mm MORT SMK RP M819 FZ MTSQ M772?

A

28 RP wedges

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10
Q

What is the prac version of the 81mm:

A

Cart 81mm MOR Target Practice M879 Fzd
PD Prac M751

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11
Q

What is the role of mortars?

A

The role of the mortar platoon is to provide organic indirect FS to the infantry battalion. The infantry battalion’s organic mortar platoon provides the CO neutralising, suppressive and destructive indirect fire at decisive events supporting the close in battle to allow their forces manoeuvre to defeat the enemy.

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12
Q

What is the luminosity in candela and the burn time of the CART 81mm MORT ILLUM M853A1 FZD MTSQ M772?

A

525000 candela for 50 seconds

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13
Q

List characteristics of mortars

A

Smooth Bore

No Recoil Mechanism

Restricted to use at elevations above 800
mils

Muzzle loaded

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14
Q

The CART 81mm MORT Target Practice M879/M879A1 is ballistically matched to which mortar natures?

A

M821A1/M821A2, M889A1/M889A2

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15
Q

What is the area of illumination of the CART 81mm MORT ILLUM M853A1 FZD MTSQ M772?

A

1200m (diameter)

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16
Q

What fuze is used on the CART 60mm MORT HE M768?

A

Fuze PD M783

17
Q

There are 4 types of 81mm mortar
Ammunition in service. These are:

A

HE

Smoke WP and RP

Illumination IR iIlumination and Visible Light

Training Inert projectiles which may be used with percussion primer and ignition cartridge or Sub calibre inserts

18
Q

What igniter is used in all natures of 60mm?

A

M702

19
Q

What is the in service smoke variant for 81mm:

A

Cart 81mm MOR SMK Red Phosphorous
(SMK RP) M819 Fuzed MTSQ M772

20
Q

What is the arm time and minimum arming distance of the CART 81mm MORT ILLUM 853A1 FZD MTSQ M772?

A

Approx. 1 sec and not less than 40m

21
Q

What effects does the CART 60mm MORT TP M769 FZD PD M775 produce?

A

Flash, audible noise, smoke

22
Q

What effects does the CART 81mm MORT TP M879 FZD PD M751 produce?

A

Flash, audible noise, smoke visible to 1500m

23
Q

What is the illumination and burn time range for the CART 60mm ILLUM M721 MTSQ M776?

A

min 250,000 candela for 32 seconds
max 400,000 candela for 40 seconds

24
Q

What are the actions on time set for the CART 81mm MORT ILLUM M853A1 FZD MTSQ M772?

A

At preselected flight time, fuze functions resulting in initiation of the fuze booster. The internal pressure build up as a result of the fuze booster causes separation of the front and tail cone sections of the mortar body by fracturing the shear pins. On separation of the mortar body, the M853A1 Illuminating Assembly is ejected rearwards from the front section of the mortar body. Simultaneously the fuze booster initiates the ignition system of the illuminant canister. Deployment of the parachute assembly controls the rate of descent of the illuminant canister. The canister burns a minimum of 50 seconds generating at least 525,000 candela within a 1200m diameter area.

25
Q

What is the lifespan of the Gas Absorption Module (GAM) employed on the CART 81mm MORT SMK RP M819 FZD MTSQ M772 and what is its function?

A

7-10 years, the module absorbs phosphine gas

26
Q

List the two in service illume variants for 81mm:

A

Cart 81mm MOR Visible Light (VL) M853A1
Illuminating Fuzed MTSQ M772

Cart 81mm MOR Infrared (IR) Illum M816 Fuzed MTSQ M772

27
Q

What tail assembly is used for all 60mm natures?

A

M27

ATO 2024 (31 decks)

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