Summative Assessment 2 - SAA, FFR, RCL, GREN, PYRO Flashcards

Question

GRENADE | what are the 2 parts to the F3 grenade?

Answer 1

Grenade hand practice inert | Grenade hand practice fuse

Answer 2

grenade body assembly fuze assembly striker housing assembly

Answer 3

5 seconds +/- 0.5

Answer 4

Throwing distance 35m | burst safety distance 3m

Answer 5

1,500,000 candela

Answer 6

two types 1.5 sec and 0.5 sec. Australia uses the 0.5 sec after the first delay, successive flashes are 0.3 seconds apart

Answer 7

Versatility, reliability and lethality

Answer 8

obstructions or folds in the ground | areas to the rear of the claymore where blast and secondary frag can be dangerous to friendly troops

Answer 9

command initiated fixed, directional fragmentation device | primarily employed in defence or fixed positions

Answer 10

``` M18A1 Weapon M57 firing device M7 Bandolier M40 test set M4 blasting cap ```

Answer 11

small amount of HMX with AL powder

Answer 12

2000 M/S +/- 300

Answer 13

Inner layer: HMX and Al Middle layer: provides tensile strength and to prevent tube bursting to contain propagating shock wave outer layer: abrasive resistant and colour coded.

Answer 14

59.5 % RDX 39.5% TNT 1 % beeswax

Answer 15

used for dems and material destruction also used as an initiating charge for other items of ordnance initiated by 38g primer

Answer 16

Exudation of MNT/DNT/TNT isomers and/or TNT/Comp B High Explosive (HE) can occur as it deteriorates with age and/or is exposed to elevated temperature. The exudate is friction and crush sensitive and may form a potential ‘flash path’. It also poses a Toxicity Hazard during handling i.e. dermal exposure path.

Answer 17

effective range 220m stationary targets 350m max flight range 1400m

Answer 18

``` A lightweight, telescoping, single shot, disposable structure consisting of: o o Aluminium tube o Fibreglass outer tube o Tube detent device o Mechanical sight system o Firing mechanism o Safety interlocks o Firing pin assembly o Rear cover o Shoulder rest assembly ```

Answer 19

o M72A6 Warhead HE Assembly o Fin Group Rocket Motor o M412A1 Fuze

Answer 20

o M72A6 Warhead HE Assembly o Fin Group Rocket Motor o M412A1 Fuze

Answer 21

penetrate up to 150 mm of armour

Answer 22

Operation of the M412A1 Fuze - On setback, leaves disengage - rotor turns clockwise - rate retarded by a geared escapement - after set back, fuze arms - safe arming distance of 12m - spring loaded escapement winds down (0.67 sec) - When armed, rotor aligns the electric detonator to the firing block contacts and the graze action cocked striker. Both detonators align with the fuze booster pellet, achieving explosive train alignment - On impact o The ceramic piezo-electric crystal element in the windshield is crushed o Produces an electric charge, transmitted via internal wires within the inner cavity of the warhead - initiates the detonator o This detonates the fuze booster pellet - detonates the warhead charge (from the rear)

Answer 23

anti structure munition` designed to defeat targets in light construction can be used to engage with light armoured vehicles shell is filled with blast enhanced explosive

Answer 24

Arming Sequence - Percussion cap initiated, igniting composition, propellant - resultant gas pressure imparts motion to shell, and forces a pressure plunger located in the fuze holder through a hole in the base disc located behind the detent pin of the SAI unit - The pressure plunger moves the detent pin upwards, releasing the ball which in turn releases the escapement locking pin - Acceleration and the escapement locking pin spring force the escapement locking pin downwards, releasing the escapement - The main spring turns the rotor lock 180o to the unlocked position - acceleration also forces the driving plunger downwards and the spring-loaded driving pin in the rotor is released - The driving plunger is blocked against the pin since the rotor cannot be turned - retained in its position by the rotor lock that has not yet completed its 180o turn - When the rotor lock has turned to the unlocked position and the acceleration ceases, the plunger spring forces the plunger upwards, turning the rotor into the armed position - Also - setback plate returns to the initial position against the grounding clip. This means that the piezoelectric system is short-circuited even after the rotor has reached the armed position and no current reaches the electric detonator. Target Impact - Upon impact, shock wave is generated that piezo-electric crystal converts into electrical energy (sufficient to make the diode conductive) - (I) mode o diode closes the electric detonator circuit achieving initiation - (D) mode o system is short circuited preventing current from reaching the electric detonator o The magnetic inertia pellet, which is attached to the base disc, is forced forward on impact and strikes the delay detonator o Delay detonator ignites and initiates the electric detonator. This gives a delay of about 30 ms

Answer 25

if the escapement is released during transport or handling before the driving plunger is pressed down, the rotor lock will turn 260 degrees into the fail safe position

Answer 26

PAX-47 40% Al Powder 40%HMX plus binder and plasticiser

Answer 27

IDF Support weapon to generate screening smoke, 3 round volley is usually used

Answer 28

4 to 56 seconds

Answer 29

volley of 3 rounds under atmospheric conditions produces a screen for 5 minutes

Answer 30

4, proximity impact, NSB and delay