81mm Mortar, M252A1 Flashcards

1
Q

What is the military designation for the 81mm mortar system?

A

M252A1

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2
Q

Name of the 81mm cannon ?

A

M253 81mm Cannon

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3
Q

Name of the mortar mount? (Bipod)

A

M177A1 Mortar Mount

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4
Q

What is the name of the baseplate?

A

M3A2 Baseplate

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5
Q

Name of the sight unit?

A

M67 Sight Unit

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6
Q

What is the name of the bore-sight?

A

M45 Boresight

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7
Q

Min and Max elevation?

A

800mils-1511mils

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8
Q

One turn of the elevation wheel is equal to?

A

10mils

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9
Q

Total mils on the deflection handwheel?

A

200 mils total

100mils on each side of the center

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11
Q

Mils of deflection per turn of the traversing handwheel

A

7mils or 10mils

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12
Q

Max and min range

A

Max: 5608m

Min: 83m

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13
Q

Rates of fire for m362 seres, m821, m889, m819 and m853 cartridges?

A

Sustained: 15rds/min

Maximum: 30rds/min for 2 minutes

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14
Q

Mils presets for boresighting?

A

0 mils deflection

800 mils elevation.

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15
Q

What are the three cartridge types for the M252A1?

A

HE
ILLUM
Phosphorus/Smoke

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16
Q

What is the name of the aiming stakes?

A

M14

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17
Q

What is the name of the night lights for the m14 stakes?

A

M65 night lights

18
Q

M816 Cartridge

A

Standard: A
Type: ILLUM
Max range: 5100 meters
Fuze: M772 MTSQ

19
Q

M819 Cartridge

A

Standard: A
Type: Smoke, RP
Max Range: 4875m
Fuze: M772 MTSQ

20
Q

M821/821A1 Cartride

A

Standard: A
Type: HE
Max Range: 5608m
Fuze: M734 Multioption

21
Q

M853 Cartridge

A

Standard: A
Type: ILLUM(burn time50-60sec)
Max Range: 5100m
Fuze: M772 MTSQ, M768 Time

22
Q

M879 Cartridge

A

Standard: A
Type: FRTC
Max Range: 5600m
Fuze: M751 PD

23
Q

M880 Cartridge

A

Standard: A
Type: SRTC
Max Range: 458m
Fuze: M775 PD(Practice)

24
Q

M889/889A1 Cartridge

A

Standard: A
Type: HE
Max Range: 5608m
Fuze: M935 PD

25
Q

How often should you swab your bore?

A

Every 10 rounds or at the end of each firing mission.