Test 15 - Mines and Grenades Flashcards
What is the arming distance of the 40mm HEDP M433?
14-27m
How does the F1 grenade work?
- Major safety feature to prevent inadvertent functioniong is the requirement for 3 distinct operations to remove safety pin.
- Pull ring must be disengaged from safety clip on striker housing.
- firm twist in a specific direction.
- this action disengages bent end from straight end of pin
- twisting pressure continued while pullling pull ring to enable bent end of pin to pass over both upright sect of striker housing.
- pressure of the safety lever on safety pin due to striker spring gives minimal additonal protection
- normal operation, safety lever held to gren body prior to throwing on removal of safety pin.
- Removal of safety pin, release of safety lever.
- when lever released, forced away from gren by a striker acting under force of striker spring.
- striker rotates on axis and strikes M42 perc primer.
- primer ignites and produces flame and heat, passes through hollowed centre of fuze body to surface of delay comp.
- primer ignites delay element, burns for 5sec +-.05 then functions det.
- det passes det wave onto booster in turn intiates main charge.
What is the debris safety distance, fuze time, dist for hearing pro and disp dist of the ASM MK 14 MOD 0 grenade?
17m debris safety Min 4 sec max 5.5 25m double hearing 25 - 600m single hearing 350m Disposal
What is the weight and fill in the M67 and fuze model number?
184g of Comp B
M213
What is the burst safety distance, lethal radius, casualty radius, safety dist and effetive throwing dist for the F1?
230m 6m 15m 30m 35m
Why is there a raised seam on the RP DM35?
For recognition at night
How does the 40mm HEDP M430A1 work?
- The weapon firing pin strikes the primer.
- The discharge from the primer ignites the propellant charge contained within the propellant cup.
- Gas pressure generated by the burning propellant ruptures the propellant cup.
- Gas enters the low pressure chamber.
- The gas pressure in the low pressure chamber acts upon the base of the projectile forcing the projectile from the cartridge case.
- The rotating band around the projectile engages the rifling in the launcher tube imparting a spin of 12,000 rpm to the projectile at a velocity of 241ms.
- Prior to firing, the detonator in the fuze rotor is held out of line by the position of the setback pin against the rotor and gear assembly.
- Upon firing, setback force frees the rotor from the pin.
- The spin of the projectile causes the safety spring assembly to disengage from the rotor and gear assembly.
- The detonator then begins to move toward the armed position under the influence of centrifugal force on the eccentrically located rotor.
- The movement of the rotor and gear assembly is resisted by an escapement mechanism, providing the required time delay in the arming of the fuze.
- The detonator reaches the armed position when the projectile has travelled a distance of 18 to 40 meters from the launcher.
- Upon impact with the target, the firing pin is driven into the detonator.
- The effect of the detonator initiates the spitback charge producing a jet which in turn initiates the main charge.
- Detonation of the main charge provides both the armour piercing effect of the shaped charge and fragmentation of the steel body.
What is the distances of the arc and height of the M18A1 fragments?
Distance of 50m, arc of 60˚ wide and 2m high
What must you check for before removing the M67 from the cardboard tube?
Safety clip and safety pin
What is the desired effect of the ASM grenade?
To either incapacitate hostile forces or render them as combat ineffective
How many and what is the makeup of the fuzed shells in the N225?
23 aluminium fused shells in three layers
What distance are fragments scattered from the RP DM35?
30m
How long is the delay in the M67?
4-5 seconds
How long is the delay in the 40mm x 46 smoke?
1.5 seconds
How long does the main fill of the 40mm CS RP707 burn?
Approximately 15 seconds
