Summative Assessment 8 Flashcards
Definition of a grenade
Small explosive store designed for projection by hand or from a personal weapon, occasionally a special discharged or launcher may be used
Definition of FFR
A tube open at one end in which fuel is burnt, the gases from the burning fuel escape out of the opened end, the momentum of escaping gases caused an equal and opposite reaction on the closed end with the projectile flight path unable to be changed
Definition of SAA
Ammunition for weapons such as pistols, rifles and machine guns below 20mm in calibre
Definition of Recoilless
If 2 equal weights can be fired opposite directions at equal velocity the weapon will be recoilless
Role/definition of a mortar
Provide organic indirect fire support to the infantry battalion, it provides the CO neutralising, suppressive and destructive indirect fire at decisive events supporting the close-in battle to allow their forces manoeuvre to defeat the enemy
Definition of a Mine
An explosive or other material, normally encased, designed to destroy or damage vehicles, boats or aircraft or designed to wound, kill or otherwise incapacitate personnel. It may be detonated by the action of its victim, by the passage of time or by controlled means
Role of Armour
Locate, identify and destroy or capture the enemy, by day or night, in combination with other arms, using fire and manoeuvre
Advantages of Recoilless weapon systems
- No Recoil
- Low weight
- Man Portable
Disadvantages of Recoilless weapon systems
- Low Velocity
- Flash/Dust signature
- Large Propelling charge
4 main parts of SAA
- Cartridge system
- Ignition System
- Propellant charge
- Bullet
Components of a grenade
- Body
- Filling
- Fragmentation
- Fuze Cavity
- Fuze
- Safety pin
- Fly off lever
- Spring
- Striker
- Detonator
- Delay Pellet
Types of payload for grenades
- High Explosive Anti-Personnel
- High Explosive Anti-Tank and Dual Purpose
- Smoke
- Chemical or Irritant
- Flash or Noise composition
- Incendiary
- Practice
- Illuminating
2 types of anti personnel grenades
- Offensive
* Defensive
3 Categories of Grenades
- Hand Thrown
- Projected - Rifle launched/gun fired
- Discharger - Weapon/Vehicle launched
2 Sections of a FFR
- Motor (Combustion chamber, fins (if applicable) and nozzle included)
- Warhead (includes Fuze)
Why is the Bullet secured to mouth of cart case?
- To provide a seal against moisture
- Prevent Accidental removal
- Retention by the cart case to allow gas pressure to build up (bullet pull)
Methods of securing bullet to cart case
- Press fit
- Canneluring
- Indenting
- Stabbing
- Crimping
- Coning
Spin Combined with Fins offsets what?
Thrust Misalignment as well as forces produced by fin misalignment
What is thrust misalignment?
Condition caused when thrust does not pass through the centre of gravity of the rocket and cause it to pitch or yaw
What are ways of overcoming thrust misalignment?
- Manufacturing to closet tolerances
- Impart a slower rate of spin
- Reduce rocket motor burn time
- Additional fins
Types of Mines
- Anti-Personnel
- Anti Tank
- Anti Helicopter
Anti tank designs of attack
- Top
- Side
- Belly
- Track
- Full width
Types of Breaching mines
- Hand breaching
- Mechanical Breaching
- Explosive Breaching
- FAE
- Electromagnetic Breaching
What is Setup in relation to the bullet
The expansion of the bullet to the rear end combined with set back
Types of 120mm Rounds
- APFSDS-T KE-W A2
- TPCSDS-T M865
- Canister M1028
- HEAT-MP-T M830A1
- TP-T M831A1
- .50 Cal SLAP-T
Components of 120mm Rounds
- CCC
- Case Base and Seal Assembly
- Electric Primer M129 or M125
- Combistible disc and propellant containment bag
- Main charge Propellant JA-2
- Spring Disc and Retaining Ring
Principles of Armoured Employment
- Mission Command
- Combined Arms
- Sustainment
- Manoeuvre Space
What PPE is required for handling of 120mm?
Cotton gloves are required to prevent the build up of static electricity and accidental initiation of the round
Four components of a mortar
Barrel
Tripod, Bipod, Monopod
Baseplate
Sights
Four characteristics of a mortar
Smooth Bore
No Recoil System
Restricted use at elevations above 800 mils
Muzzle loaded
Types of mortar fire
Preparation Fire Covering Fire Defensive fire Counter battery fire Harassing fire Smoke Illuminating
Types of fire control system
Optical Fire control System
Digital fire control system
Rates of Fire for Artillery
Max 4 RPM for 2 mins
Sustained 2 RPM
After 30 mins rate of fire dropped to 1 RPM
5 Components of a mine
Warhead Sensor and Fuze Safety and arming unit Power source Case
4 types of cart case bases
Rimmed
Rimless
Semi rimless
Belted rimless
4 types of marking on bases
Manufacturers symbol
Year
Calibre
Model number
3 factors affecting accuracy of rocket
Launcher accuracy
Crosswind
Propellant burn rate
Characteristics of a FFR motor
Only use boost motors
Motor casing strong enough to withstand pressure
Usually steel or fibreglass
De Laval nozzles
What is a De Laval nozzle
Uses high pressure subsonic gases by choking them and then releases it into supersonic gases to create thrust
3 categories of AP mines?
Pressure activated/Direct contact
Omnidirectional fragmentation
Directional Fragmentation
4 methods of securing percussion primers to cart cases
Push Fit
Ringing
Punch Stabbing
Burring
2 main categories of projectile
Solid
Filled
4 groups of anti tank mines
Pattern
Scatterable
Side attack
Area defence
