Cart 40mm grenades Flashcards
Cart 40mm grenades engages targets primarily at _____ but can engage out to ____
- 150 metres
- 350 metres
What can the 40mm be fired from?
- GLA
- M79
Explain the Hi-Lo propulsion system
- Firing pin strikes primer
- Primer flash ignites propellant in charge cup inside high pressure chamber
- Burning propellant creates high pressure chamber causing charge cup to rupture at vent holes
- Vent holes rupture gases flow into low pressure chamber
- Gases enter larger area of case, pressure reduces
- Low pressure propels projectile forward
Name 3 current in-service Cart 40mm grenades
- Cart 40mm HEDP M433
- Cart 40mm Illum Para White Star
- Cart 40mm Prac
What is the fill in the M433 HEDP and it’s muzzle velocity
- 45 grams of Comp A5 (RDX 98.5, stearic acid 1.5%)
- 76 m/s
Explain the functioning of the Cart 40mm HEDP M433
- Hi-Lo propulsion system utilised
- Driving band engages rifling imparting spin of 3750 rpm
- Expanding gases in low pressure chamber force projectile through launcher tube
- After leaving tube initial rotation causes fuze detent to free rotor
- Centrifugal force cause three hammer weights to move outward
- Allowing a conical spring to move firing pin forward, disengaging rotor
- Rotor moves to armed position
- Aligning detonator with firing pin and spit back shaped charge
- Fuze escarpment retards rotor movement, delaying arming until proj travelled 14 m
- On impact firing pin driven into detonator
- Triggering spit back shaped charge
- Producing a jet which detonates main charge
- Producing an armour piercing jet of molten metal & fragmentation of body
What type of fuze is on the Cart 40mm M433 HEDP
PIBD - Spit back
White star para contains:
93 grams of illum composition
What is the White star para’s candlepower ad burn time?
- 90,000
- 40 seconds
Explain the functioning of the Cart 40mm Illum White Star Para
- HI-LO Propulsion system initiated
- Propellant also ignites delay element in base of projectile
- Projectile is propelled to burst height
- Driving band imparts spin of 3750 rpm
- Delay element ignites ejection charge
- Functioning cont
- Ejection charge ignites candle & ejects candle through top of projectile body
- Parachute deploys to descend candle at 2 m/s
- Candle burns for approx 40 seconds
What is the fill in the Cart 40MM Prac DM118?
3 grams of red signal dye
What is the fill in the Cart 40MM CS RP707?
7 grams of CS smoke Composition
The Cart 40MM CS M674 can be used with the M203 grenade launcher. True or False?
False
Cart 40MM HEDP M430A1 can penetrate up to:
50mm of armour
What is the explosive filling in the Cart 40MM HEDP M430A1?
34.5 grams of Comp A5
