Study Test 1 Flashcards
What are the different types of elevation gears?
1) Worm and Segment
2) Nut and Screw
3Arc and Pinion
What are the different types of traverse gears?
1) Worm and Segment
2) Nut and Screw
3) Arc and Pinion
4) Rapson Nut and Screw
What is Windage?
The difference of the calibre of the mortar tube and the calibre of the mortar bomb.
Why is windage important ?
It allows a cushion of air to support the drop of the bomb down the tube.
What names are given to the Rifling?
1) Lands
2) Goves
How do you measure calibre?
Diameter of the bore from land to land
Describe Calibre as a length?
Calibre of weapon along the total length of the barrel.
What are the parts of the mortar?
1) Barrel
2) Bipod
3) Baseplate
4) Sights
What are the parts of the mortar bomb?
1) The Body
2) Tail Unit
Who was the monk?
Black Berthold
What did black Berthold do?
He is credited with the concept of a gun.
What was the first Fuze name?
Boxer Fuze
Who invented the boxer Fuze?
Colonel Boxer
Who is Shrapnel?
He is Henry Shrapnel, he fired cannon balls filled with shot that burst in mid air.
How do you achieve obturation with a caseless weapon?
1) Driving band
2) Obturation Ring
3) Interupted/Sliding Screw breeches
What is shot start?
When the projectile starts to move down the barrel.
How can the life of a barrel be extended?
1) Cooler burning propellant
2) Barrel cooling techniques
3) bore surfaces/finishes such as crome & molybdenum.
Name the types of firing mechanisms?
1) Percussion
2) Electric
3) Percussion and Electric
Henry Martini Problems?
1) Excessive fouling due to black powder
2) Extraction issue due to weak cart case
What are the early types of gun barrel?
1) Iron
2) Cast Iron
3) Bronze
What are the barrel construction methods?
1) Wire wound
2) Built up Barrels
3) Loose Barrel/Loose Liner
4) Composite Barrel
5) Monobloc
What are the different early methods of Rifling?
1) Hexagonal Barrel and Projectile
2) Studded Projectile
3) Lead Coated Projectile
4) Oval Rifling
5) French Rifling
6) Vavassures driving band
What are the 8 Tasks of IDF?
1) Suppression
2) Neutralisation
3) Destruction
4) Harrassment
5) Illumination
6) Intradiction
7) Counter-Battery Fire
8) Coordination of Fire
Define Ammunition?
All material used in discharging firearms or weapons that throw projectiles, shot, shrapnel, bullets, cartridges and the means of igniting and exploding them as primers & fuzes. Chemicals, bombs, grenades, mines and pyros are also ammunition.
Define Ordnance?
Provides a vessel to contain force of burning charge. Energy produced is transmitted safely and predictably to projectile. Imparts direction and stability
What are the advantages of mortars?
1) Moderate Cost
2) Low weight
3) Simplicity
4) High angles and rates of fire
Define FFR?
Tube open at one end, fuel is burnt and escapes out the open end. Momentum causes and equal and opposite reaction at closed end.
Projectile flight path cannot be changed
What are 3 types of fixes used in Artillary HE?
1) Air Burst
2) Ground Burst
3) Delayed
What are the 5 requirements of Artillary?
1) Protection
2) Range
3) Accuracy and Consistency
4) Ammo
5) Mobility
What are the two methods of post firing boost?
1) Base Bleed
2) Rocket assist
What do they improve?
1) Increase Range
2) Improve Accuracy and Consistency
What are the disadvantages of fix propellant?
1) Flat trajectory can’t reach behind hills or into valleys
What is the reason consistency varies?
1) Ballistic Coefficient
2) Laying, ramming and wear of the gun
3) Muzzle Velocity
4) Weather Conditions
What is Illum designed to do?
It is designed to be used at night to illuminate the surroundings with white light
What is HE frag designed to do?
1) Disperse high velocity Fragmentation
2) Effect is accompanied by blast
What does FAB achieve?
1) Longer Impulse
2) Blast Overpressure
What is the difference between carriage and mount?
- Carriage travels on wheels and fires with its wheels in contact with the ground
- mount does not fire with its wheels touching the ground.
What is smoke designed to do?
1) Screen
2) Blind
3) Mark
How does the Recuperator work?
Mechanism that returns the recoiled parts back to their original position and holds them there until the next round is fired
Charge to weight ratio of a mortar and artillery is?
1) 20%
2) 15%
Fragmentation from HE can be influenced by what?
1) Bomb wall produced in metal good frag qualities
2) Thin walled with liner of pre cast frag
