Mortar DS Flashcards
How many RP wedges are in the 81mm SMK RP M819 and what are they made of?
28 Wedges
43g of SW 533
Cart 81mm Mortar Smoke RP M819 FZD MTSQ M772
Characteristics -
(Ignition Cartridge)
(Propelling Charge)
(Tailfin Assembly)
IG - M752A1
CP - M218
TA - M28
What is a GAM and what does it do?
Gas Absorbant Module
Absorb the decomposition by-products of the RP (phosphine gas). The GAM has a life expectancy of between 7 to 10 years.
60mm ILLUM (IR) M767 FZD MTSQ M776
(Brightness)
(Burn Time)
(Candle Composition)
500 Candlepower
40 Seconds
FW 1418 Black Nite Comp
First Fire Comp
Illuminant Comp
Ignition Comp
60mm ILLUM (VL) M721 W/Fuze MTSQ M776
(Brightness)
(Burn Time)
Max - 400 000 Candlepower for 40 Seconds
Min - 250 000 Candlepower for 32 Seconds
Cart 81mm Mortar IR Illum M816 fuzed MTSQ M772
(Deployment Height)
(Luminosity)
(Burn Time)
(Settable time range)
(Candle Composition)
Deployment Height - 600m
Luminosity - 50 Watts
Burn Time - 60 Seconds
4 to 56 seconds in increments of 0.5 seconds
FW 1418 Black Nite Comp
First Fire Comp
Cart 81mm ILLUM M853A1 W/Fuze MTSQ M772
(Deployment & Brightness)
(Burn Time)
(Settable time range)
(Candle Composition)
475m & Min 525 000 Candella for 50 Seconds
4 to 56 seconds in increments of 0.5 seconds
First Fire Comp
Illuminant Comp
Ignition Comp
What is this Mortar and Fuze?
Cart 81mm SMK RP M819 FZD MTSQ M772
What is this Mortar and Fuze?
CARTRIDGE 81MM MORTAR INFRARED (IR) ILLUMINATING M816 FUZED MTSQ M772
What is this Mortar and Fuze?
CART 81MM ILLUM M853A1 W/FUZE MTSQ M772
What is this Mortar and Fuze?
CART 81MM HE M889A1 W/FUZE PD M935
What is this Mortar and Fuze?
CART 81MM HE M889A2 W/FUZE PD M783
What is this Mortar and Fuze?
CART, 81MM MORTAR TARGET PRACTICE (TP) M879 FUZED POINT DETONATING (PD) PRACTICE M751
What is this Mortar and Fuze?
CARTRIDGE 60MM HIGH EXPLOSIVE (HE) M888 WITH
FUZE PD M935
What is this Mortar and Fuze?
CART 60MM MORTAR ILLUM (VL) M721 FZD MTSQ M776
What is this Mortar and Fuze?
CART 60MM ILLUM (IR) M767 FZD MTSQ M776
What is this Mortar and Fuze?
CARTRIDGE 60MM SMK WHITE PHOSPHORUS (WP) M722A1 WITH FUZE POINT DETONATING/DELAY M783
What is this Mortar and Fuze?
CARTRIDGE 60MM FULL RANGE PRACTICE ROUND M769 WITH FUZE PD M775 FUZE
What is this Mortar and Fuze?
CARTRIDGE 60MM HIGH EXPLOSIVE (HE) M768 WITH
FUZE PD M783
What is this Mortar and Fuze?
CART 81MM HE M821A2 W/FUZE M/O M734A1
What is the Model and Make Up of the 60mm Ignition Carts
M702
Fed Primer 150
Pellet (Black Powder) M9 Propellant
How does the M775 fuze work?
The safety pin is removed immediately before loading the M769 into the M224/M224A1 Light Weight Crew Mobile System (LWCMS). Upon firing, the acceleration moves the setback pin rearward against a spring, releasing a slider, which holds the striker in its rearward position. Once the striker is released, it travels upward allowing the ball bearings to be forced into central alignment between the striker and the primer. Upon impact, the striker is driven into the ball bearings which initiate the primer, igniting the pyrotechnic smoke cartridge. The pyrotechnic smoke cartridge in the fuze produces a flash, audible sound and cloud of smoke, to simulate the HE function. Upon functioning, the hole plugs are expelled from the holes in the base of the projectile, allowing the smoke cloud to vent through the holes.
Characteristics of the Cart 81mm HE M821A2 W/Fuze M/O M734A1
(HE Fill)
(Min/Max range)
(Ignition Cart)
(Propelling charge assembly)
(Tailfin assembly)
.916kg COMP B
Min (Charge Zero) 63m, (Max Charge 4) 5470m
M299
M220
M24
What are the Fuze setting options for the MO M734A1?
Proximity (60/81)
Proximity (120)
Impact
Delay
What is the smoke effect of the 81mm RP Smoke round ?
At a deployment height of 175m above the ground, the payload of 28 red phosphorous (RP) wedges are base ejected. Three cartridges will provide effective ground screening for a duration of five minutes under ideal atmospheric conditions.
How does the the M734A1 Multi Option Fuze work?
- Fuze set prior to launch
AFTER LAUNCH - Setback sensor moves rearward (setback) and releases first rotor lock (zigzag device)
- As the setback sensor retracts rearward, it releases a spring interlock on a mechanical gear reduction train (stops wind from premature arming)
4.Setback sensor is locked rearward after max setback achieved
DURING FLIGHT - Air ingested through the venturi drives the turbine and escapes through the bottom of the ogive
- Turbine alternator assembly generates electrical energy to power the fuzes electronics package
- Rotation of the turbine alternator shaft also drives a mechanical gear reduction train which retracts the second rotor lock (jackscrew)
- A predetermined number of turns of the gear train is required to retract the second rotor lock from engagement in the S&A rotor
- The delay in disengaging the second rotor lock results in a minimum mechanical arming distance of 100 metres
- On release of the second rotor lock and driven by the influence of the rotor spring, the rotor rotates 180°.
FULLY ARMED
Functions via PROX/IMP/DLY
What is the difference between the Cartridges 81mm HE M899A1, M889A2, M821A1 and M821A2?
They are identical with the exception of the M821A2 which is fuzed with the M/O M734A1
What igniter cartridge is used in all 60mm mortars?
M702
What igniter cartridge is used in all 81mm mortars less illum and RP?
M299
What igniter cartridge is used in all 81mm illum and RP mortars?
M752A1
What tailfin assembly is used in all 60mm mortars?
M27
What tailfin assembly is used in all 81mm mortars less illum and RP?
M24
What charge propelling assembly is used in all 81mm mortars less illum and RP?
M220
