60mm Mortars

Question 1

2 ways to fire mortar

Answer 1

Conventional

Handheld (unconventional)

Question 2

4 types of ammunition for 60mm mortar

Answer 2

HE
White Phosphorus
Illumination
Training

Question 3

All 60mm cartridges, except training, have three major components:

Answer 3

Fuze
Body
Tail fin w/propulsion system assembly

Question 4

Nomenclature of 60mm

Answer 4

M224A1

Question 5

Components of 60mm mortar

Answer 5

M225A1 TUBE
M170A1 BIPOD ASSEMBLY
M7A1 BASEPLATE
M67/ M64A1 SIGHT UNIT

Question 6

Base plate(s) used for conventional

Answer 6

M7A1-6400 mils

•can be used to fire charge 0 through 4

Question 7

Base plates used for handheld fire

Answer 7

M8
•1600 mils(0800 left and 0800 right)

M8A1
•6400 mils
•fired with charge of 0 or 1, but capable of firing up to charge 4

Question 8

HE M720 Min/Max Range

Conventional/Handheld

Answer 8

Conventional:
Min-70m
Max-3,490m

Handheld:
Min-70m
Max-1,340m

FUZE:
M734 Multioption

Question 9

HE M888 Min/Max range

Conventional and Handheld

Answer 9

Conventional
Min-70m
Max-3,520m

Handheld
Min-70m
Max-1,340m

FUZE:
M935 PD Fuze

Question 10

M721 ILLUM round Max range

Answer 10

3,200m

FUZE:
M776 MTSQ

Question 11

M170A1 Bipod azimuth/traverse adjustment

Answer 11

250 mils

Question 12

M170A1 Bipod upper/lower adjustment

Answer 12

Upper- 1 turn=10 mils

Lower-1 turn=15 mils

Question 13

M170A1 Bipod Elevation adjustment

Answer 13

800-1511 mils

Upper Saddle: 0800-1,100
Lower Saddle: 1,101-1,511

Question 14

What is max charge you can fire in handheld

Answer 14

Charge 1

Question 15

M170A1 Bipod def.

Answer 15

Clamps the cannon for use with the M7A1 baseplate to provide support in conventional mode.
Provides means to elevate, traverse and cross level the cannon as well as to absorb the shock of firing

Question 16

M170A1 assembly components

Answer 16

•Mortar mount level (cross level mechanism)
-levels cross level can’t of weapon

•Block clamp knob (cross level locking knob)
-locks mortar into place

•Traverse assembly (traversing mech.)
-makes fine adjustment in deflection

•Elevating mechanism

Question 17

M67/M64A1 Sight Unit

Answer 17

Lays weapon in elevation and deflection (azimuth)
•4x nominal 3.5x effective
•10 degrees FOV

Question 18

Boresight Nomaclature

Answer 18

M115

Question 19

Distance to bore sight

Answer 19

800m

Question 20

M734 Multioption fuze

Answer 20

Proximity Burst: 3-13 feet

Near Surface Burst: 0-3 feet

Can be set to proximity, near surface, impact, or delay (0.05 seconds)

Used in the M720 cartridge

Question 21

M935 Point Detonating Fuze

Answer 21

Used for the M888 HE

Set to SQ(super quick) or DLY(delay)