SA08 Theory of Design Flashcards
Components of a typical grenade
Body
Filling
Fragmentation
Fuze cavity
Fuze
What is a grenade
A grenade is a small explosive store designed for projection by hand or from a personal weapon
Payload types of grenades
HE anti-pers
HEAT
Smoke.
Chemical or Irritant.
Flash or Noise composition - (Stun).
Incendiary.
Practice.
Illuminating.
What is a defensive grenade
These grenades are designed for use when the thrower is protected in a defensive position. The large lethal area is achieved using fragments projected at high velocity.
What is a offensive grenade
Offensive grenades rely solely on the effect of blast for their anti-personnel effect. Usual effect is to stun or disorientate a man so that he is incapable of rational reaction for a short period of time.
Design categories of grenade
Hand thrown
Projected - Rifle launched/gun fired
Discharger - Weapon/vehicle launched
What are two sections of a FFR
Motor
Warhead (Including Fuze)
What is the most used warhead fitted to a FFR
Shape charged/HEAT
3 factors that affect FFR accuracy
Surface Cross Winds
Propellant burning rate
Launcher induced errors
What are the 2 main propellants used in FFR’s and what is the main propellant used?
Liquid Propellant
Solid propellant most used
The normal type of nozzle used is a De Laval Nozzle. What is its purpose?
Purpose is to change heat and pressure to kinetic energy
Types of recoiless ammunition in service
HEAT 551
HEDP 502
ILLUM 545
PRAC - TPT 141/552
HE 441B
Drill
Anti structural 509
ADV of RCL
No recoil
Low weight
Man portable
Dis ADV of RCL
Low velocity
Flash/dust signature
Large propelling charge
Define SAA
Ammunition for weapons such as pistols, rifles and machine guns below 20mm in calibre
Components of Mines
Warhead
Sensor & Fuze
Safety & arming unit
Power source
Case
Sterilisation of mines
Self neutralisation
Self destruct
Remote controlled
How many wedges in a 155mm WP
116 felt wedges
Rates of fire for M777
4 RPM for 2 min
Sustained 2RPM
After 30 mins the rate of fire is dropped to 1
3 Categories of AP mines
Pressure activated/direct contact AP mines
Omni-directional fragmentation AP mines
Directional fragmentation AP mines
3 Mine laying methods
Hand laying
Mechanical laying
Scatterable mine laying system
3 methods of mechanical breaching (clearing) mines
Flails
Rollers
Ploughs
State the 4 main components of SAA
Cart case
Projectile
Primer
Propellant
There are 4 main types of cartridge case bases what are they
Rimmed
Rimless
Semi-rimless
Belted rimless
State the 3 types of ignition system
Integral Anvil - (BERDAN Primer).
Separate Anvil - (BOXER Primer).
Rimfire
4 components of 120mm tank ammunition
Combustible cart case
Case base & self assembly
Electric primer
Main charge propellant
Fuze setting on a 120mm HE Multi-purpose round
Prox (Airburst)
Impact (Groundbusrt)
What is left in the barrel of a 120mm post firing
Steel base of case and primer tube is left behind post firing
Sterilisation of mines
Self neutralisation
Self destruct
Remote conrtolled
Types of 155 rounds
HE M107
HE M795
HE XM982 Excalibur
Smart DM702A1
Illuminating M485A2
WP M826A1
Characteristics of mortar fire
Illuminating
Preparation
Counter BTY fire
Screening
Covering
Defensive
Harassing
Characteristics of mortar
Smooth Bore
No recoil mechanism
Muzzle Loaded
Restriction to use at elevations above 800 mils
What can a cart case be influenced by?
Role of the ammo
Projectile design
Type of weapon
Ignition system
What must a cart case be?
Elastic to expand to provide obturation
Return to normal size for extraction
Resist corrosion
Strong to withstand transport and handling
What are permanent marking on cart cases?
Manufacture symbol
Year of manufacture
Calibre
Model Number
How is an Excalibur round controlled?
GPS
