60mm Mortars Flashcards
2 ways to fire mortar
Conventional
Handheld (unconventional)
4 types of ammunition for 60mm mortar
HE
White Phosphorus
Illumination
Training
All 60mm cartridges, except training, have three major components:
Fuze
Body
Tail fin w/propulsion system assembly
Nomenclature of 60mm
M224A1
Components of 60mm mortar
M225A1 TUBE
M170A1 BIPOD ASSEMBLY
M7A1 BASEPLATE
M67/ M64A1 SIGHT UNIT
Base plate(s) used for conventional
M7A1-6400 mils
•can be used to fire charge 0 through 4
Base plates used for handheld fire
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
HE M720 Min/Max Range
Conventional/Handheld
Conventional:
Min-70m
Max-3,490m
Handheld:
Min-70m
Max-1,340m
FUZE:
M734 Multioption
HE M888 Min/Max range
Conventional and Handheld
Conventional
Min-70m
Max-3,520m
Handheld
Min-70m
Max-1,340m
FUZE:
M935 PD Fuze
M721 ILLUM round Max range
3,200m
FUZE:
M776 MTSQ
M170A1 Bipod azimuth/traverse adjustment
250 mils
M170A1 Bipod upper/lower adjustment
Upper- 1 turn=10 mils
Lower-1 turn=15 mils
M170A1 Bipod Elevation adjustment
800-1511 mils
Upper Saddle: 0800-1,100
Lower Saddle: 1,101-1,511
What is max charge you can fire in handheld
Charge 1
M170A1 Bipod def.
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
M170A1 assembly components
•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
M67/M64A1 Sight Unit
Lays weapon in elevation and deflection (azimuth)
•4x nominal 3.5x effective
•10 degrees FOV
Boresight Nomaclature
M115
Distance to bore sight
800m
M734 Multioption fuze
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
M935 Point Detonating Fuze
Used for the M888 HE
Set to SQ(super quick) or DLY(delay)
