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Weapons Systems - Guns > Gun System Components > Flashcards

Gun System Components Flashcards

1
Q
A
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2
Q

Barrel, breech, feed system, cooling system are part of what part of the gun?

A

Gun Structure

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3
Q

Recoil and laying systems are part of what part of the gun?

A

Mounting arrangement

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4
Q

“A tube capable of containing and controlling the explosion of a propellant charge so as to propel a projectile at high velocity. Provides stability and imparts spin to projectile.”

A

Barrel

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5
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6
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7
Q

“The portion of the barrel in which the ammunition is inserted prior to being fired. It is of a larger diameter than the bore and houses the casing of the round while the projectile rest in the bore.”

A

Chamber

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8
Q

“Interior of the barrel”

A

Bore

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9
Q

What type of rifling do modern naval guns have?

A

Right-hand

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10
Q

What does the spinning of the projectile do?

A

Gyroscopic rigidity, stabilizes the round

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11
Q

“A tubular insert that can be replaced when worn”

A

Bore liners

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12
Q

What are causes of eriosion to the bore?

A

Heating scouring the surface
Rapid heating and cooling
Hot gasses acting as high-velocity jets

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13
Q

Where does most of the wear on the bore occur?

A

Near the breech where rifling begins.

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14
Q

Why does bore erosion reduce muzzle velocity?

A

Gas escapes past the projectile, reducing pressure behind it.

Projectile may be rammed further into the gun, reducing the propeling in the chamber.?

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15
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16
Q

Why must the muzzle be precise?

A
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17
Q

“reduce the signature of a gun by cooling or dispesing the burning gasses that exit the muzzle. Not typically used on guns above 40mm due to added mass and recoil.”

A

Flash Suppressors

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18
Q

“A device connected to the muzzle of a gun that redirects propellant gases to counter recoil and unwanted rising of the barrel during rapid fire”

A

Muzzle Brake

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19
Q

“The part of the gun barrel that slides back and forth in a bearing mounted in the gun slide during recoil”

A

Sliding Cylinder.

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20
Q

“The tapered area of the barrel, thicker walls to withstand higher pressure.”

A

Chase

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21
Q

“The thinnest part of the barrel running from the chase to the muzzle”

A

Neck

22
Q

“Used on older guns. Metal is made thicker to discourage splitting.” (flaring out at the muzzle)

A

Bell

23
Q

Modern version of a bell, used when the liner is replaced, to anchro the tool for pulling the liner out.

A

Lug

24
Q

Two main categories of breech types

A

Screw type
Sliding block type

25
Q

What is the mechanism by which breeches work to seal the chamber?

A

Sealing by Expansion

26
Q
A
27
Q
A
28
Q

What is the advantage of a horizontally sliding breech block?

A

Don’t have to fight against gravity

29
Q

“Opens the breech and operates the extractors during recoil”

A

Lever Breech Mechanism (LBM)

30
Q

“Prevents the breech block from slamming into place during recoil to prevent damage. Brings the block gradually to rest in the open position.

A

Breech Buffer

31
Q

“Lock the breech in place and hauls fired cartridge cases out of the chamber after firing.”

A

Extractors

32
Q

“Imparts energy to the round required to initiate the propellant train”

A

Firing Mechanism

33
Q

What are the two types of firing mechanisms?

A

Electrical

Percussive

34
Q

Designed to absorb and dissipate the forces generatedby firing and return the gun to the firing position.

A

Recoil System

35
Q

“Controls the length of recoil and the velocity of counter-recoil.” Contails a mix of air and hydraulic oil which is compressed upon recoil, dissipating energy by hydraulic dampening.

A

Recoil Cylinder

36
Q

“Provides the force necessary to return the gun mechanism to the battery position, cock the rammer, and feed the new round”

A

Recoil Spring

37
Q

What are 3 cooling systems?

A

Water cooled
Air cooled
Multiple barrels (CIWS)

38
Q

“The process of aiming an artillery piece in training and elevation in order to aim at surface and air targets.”

A

Gun Laying system

39
Q

Subsystem of Laying System: “Traverses the gun in the horizontal plane.”

A

Training System

40
Q

Subsystem of Laying System: “Elevates and lowers the gun body in the verticle plane”

A

Elevating System

41
Q

“All components on the gun body that pass ready-use ammunition to the firing point”

A

Feed System

42
Q

How is the CIWS made mechanically safe?

A

Sector Holdback Tool

Holds back cams so they do not chamber the rounds.

43
Q

“All components designed to store ammunition, transfer it to the gun mount, and handle ready-use ammunition on the mount”

A

Loading System

44
Q

What are components of the loading system on the 57mm?

A

Magazine, hoist system, rounds receiver, loading cassettes, intermediate magazines

45
Q

What are the major components of the gun mount?

A

Laying System
Recoil System
Slide
Trunnions
Carriage
Stand
Cupola

46
Q

“A cylindrical casting within which the gun slides axially in recoil and counter recoil.”

A

Slide

47
Q

“Provide the pivot point for the elevating system”

A

Trunnions

48
Q

“The part of the mount that rotates in training.”

A

Carriage

49
Q

“The stationary part of the mount which is bolted to the ship’s structure”

A

Stand

50
Q

“Covers the gun and mounting to protect them from the surrounding environment.” Often radar absorbant, made of glass reinforced plastic.

A

Cupola

51
Q

What are the components of a sliding breech mechanism?

A

Breech Ring
Breech Block
Lever Breach Mechanism (LBM)
Breech Block Buffer
Extractors
Firing Mechanism

52
Q

What must a gun mount provide to the gun?

A

Support the gun body
Elevation and training
Recoil and counter-recoil control
Protection from the elements

Weapons Systems - Guns (6 decks)

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