Ordnance

Question 1

What are the 2 main parts of a gun

Answer 1

• Carriage or mounting

- The Ordnance

Question 2

What term is used to describe the diameter of the bore excluding the depths of the “lands”

Answer 2

calibre

Question 3

What are the 3 types of muzzle brake construction

Answer 3

Built up
Solid forging
Swaged

Question 4

A decrease in the initial resistance to “shot start” is caused by what, and what effect will this have?

Answer 4

Barrel wear

Range is decreased

Question 5

What are the 2 categories of breech mechanisms

Answer 5

Screw mechanisms

Sliding lock mechanisms

Question 6

What do fume extractors aid in

Answer 6

they prevent the fumes entering the crew compartment

Question 7

list the types/methods of barrel construction (6)

Answer 7

WBLCM

wire wound
Built-up barrels
Loose barrel/  loose liner
Composite barrels
Monobloc  (Russian eyebrows!)

Question 8

What are the main components of the ordnance

Answer 8

the barrel and attachments
Breech
Firing mechanism

Question 9

How can the life of a barrel be extended? (3)

Answer 9

Cooler burning propellants
Barrel cooling techniques
Bore surface finishes