2nd quiz ballistics

37問 • 11ヶ月前

問題一覧

study of the motion and traits of projectile, while still inside the gun barrel, this covers from the time, the firearm is loaded with the cartridge, the explosion and the movement of the bullet towards the muzzle end of the gun.

INTERIOR BALLISTICS

Defects in firearm that cause to misfire

a. Broken firing pin b. Loose firing pin c. Lacking length in firing pin

The failure of the cartridge to explode after the firing pin strikes the primer is called.

MISFIRE

3. Ignition of priming mixture, also called.

Percusion Action

Priming mixture composing what?

KCLO3, sulphur and carbon

It is a very sensitive chemical compound located inside the primer cup.

Priming mixture

explode several seconds after the firing pin blow the primer, the delay of explosion, is known as.

Hangfire

Expensive, not refillable, 2 flash holes

Berdan Primer

Cheaper, refillable, 1 flash hole

Boxer Primer

Probable defects in the contents of the primer cup .

a. Wet priming mixture (due to moisture) b. The anvil is not properly fixed slanting position) c. No vent or flash- hole (factory defect) d. No priming mixture at all ( factory defect)

After the primer crushed the priming mixture against the anvil, there will be an ignition of priming mixture and the primer flash, passes through the vent or canal towards the gunpowder

Combustion of Gunpowder

There will be equal expansion of heated gas inside the cartridge, after the combustion of gun powder

Expansion of Heated Gas in the Chamber

When a heated gas created by the burning powder charge is developed, a tremendous pressure is produced in the chamber of the firearm

Pressure developed

Energy is the capacity to do work. The potential energy serves as the propellant of the expanded gases, in as much as the pressure that is developed has that degree of energy to force the projectile out of the shell. It is the measure of force in foot-pound necessary for an action

Energy Generated

The recoil of the gun is cause, by the equal and opposite reaction of the gun, against the forward movement of the bullet after the explosion

Recoil of the Gun

To minimize the recoil of the gun, the gun owner should buy a gadget that will tend to reduce the recoil in every firing of the gun.

Muzzle brake or compensator

It is another portion of the recoil action that is characterized as the backward and upward movement takes place before the bullet leaves the muzzle

Jump

The bullet will travel the bore of the barrel depending on the powder load of the cartridges, since it is the powder load will propel the bullet in the bore of the barrel of the firearm

Velocity of the Bullet in the Barrel

When the bullet is driven by the heated gas by tremendous pressure towards the muzzle end, the bullet will rotate following the rifling or lands and grooves inside that gun barrel.

Rotation of the Bullet in the Barrel

The lands and the grooves, starting from the breech end up to the muzzle end of the barrel, will engraved in the body of the bullet, depending on the number of lands and grooves as part of the class characteristics of the firearm

Engraving of the cylindrical surface of the bullet

Is the study of the motion and traits of projectiles, after it has left from the muzzle of the gun, which includes the condition of the bullets movement, and flight up to the target

EXTERIOR BALLISTICS

This refers to the noise created at the muzzle point or the gun by the reason of sudden escape of the expanding gas when it comes to instant contact with the air in the surrounding atmosphere at muzzle point.

Muzzle Blast

This refers to the energy generated at muzzle point measured in foot-pound. This is attributed to the hot gas liberating at the muzzle point

Muzzle Energy

This refers to the actual curve path of the bullet during its flight from the gun muzzle to the target, which usually occurred a few meters away from the muzzle of the firearm called wobbling

Trajectory

Stages of Trajectory

a. Straight horizontal line b. Parabola Like Flight c. Vertical drop

Lateral deviation of the bullet

DRIFT

Factors Affecting Trajectory

a. Gravity b. Air Resistance c. Mass d. Velocity

results in a downward curve path

a. Gravity

slows its flight

Air Resistance

is the weight of the bullet

Mass

is the speed of the bullet

Velocity

This refers to the imaginary straight distance from the muzzle of the gun to the target

Range

This refers to the distance within which the firer has control of his shots, meaning he can place his shots at a desired spots

Accurate range

The distance within which a bullet is still capable of inflicting injury after it has been fired.

Effective range

the distance that a projectile can be propelled from a firearm. The farthest distance the bullet could travel.

Maximum range

indoor target range

Gallery range

This refers to the rate of speed of the bullet (during its flight) per unit of time, and it is usually expressed in feet per second (ft/sec) and measured through the use of a chronograph machine

Velocity

242

242

180/242

180/242

120/242

120/242

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問題一覧

INTERIOR BALLISTICS

Defects in firearm that cause to misfire

a. Broken firing pin b. Loose firing pin c. Lacking length in firing pin

The failure of the cartridge to explode after the firing pin strikes the primer is called.

MISFIRE

3. Ignition of priming mixture, also called.

Percusion Action

Priming mixture composing what?

KCLO3, sulphur and carbon

It is a very sensitive chemical compound located inside the primer cup.

Priming mixture

explode several seconds after the firing pin blow the primer, the delay of explosion, is known as.

Hangfire

Expensive, not refillable, 2 flash holes

Berdan Primer

Cheaper, refillable, 1 flash hole

Boxer Primer

Probable defects in the contents of the primer cup .

a. Wet priming mixture (due to moisture) b. The anvil is not properly fixed slanting position) c. No vent or flash- hole (factory defect) d. No priming mixture at all ( factory defect)

After the primer crushed the priming mixture against the anvil, there will be an ignition of priming mixture and the primer flash, passes through the vent or canal towards the gunpowder

Combustion of Gunpowder

There will be equal expansion of heated gas inside the cartridge, after the combustion of gun powder

Expansion of Heated Gas in the Chamber

When a heated gas created by the burning powder charge is developed, a tremendous pressure is produced in the chamber of the firearm

Pressure developed

Energy Generated

The recoil of the gun is cause, by the equal and opposite reaction of the gun, against the forward movement of the bullet after the explosion

Recoil of the Gun

To minimize the recoil of the gun, the gun owner should buy a gadget that will tend to reduce the recoil in every firing of the gun.

Muzzle brake or compensator

It is another portion of the recoil action that is characterized as the backward and upward movement takes place before the bullet leaves the muzzle

Jump

The bullet will travel the bore of the barrel depending on the powder load of the cartridges, since it is the powder load will propel the bullet in the bore of the barrel of the firearm

Velocity of the Bullet in the Barrel

When the bullet is driven by the heated gas by tremendous pressure towards the muzzle end, the bullet will rotate following the rifling or lands and grooves inside that gun barrel.

Rotation of the Bullet in the Barrel

Engraving of the cylindrical surface of the bullet

Is the study of the motion and traits of projectiles, after it has left from the muzzle of the gun, which includes the condition of the bullets movement, and flight up to the target

EXTERIOR BALLISTICS

Muzzle Blast

This refers to the energy generated at muzzle point measured in foot-pound. This is attributed to the hot gas liberating at the muzzle point

Muzzle Energy

This refers to the actual curve path of the bullet during its flight from the gun muzzle to the target, which usually occurred a few meters away from the muzzle of the firearm called wobbling

Trajectory

Stages of Trajectory

a. Straight horizontal line b. Parabola Like Flight c. Vertical drop

Lateral deviation of the bullet

DRIFT

Factors Affecting Trajectory

a. Gravity b. Air Resistance c. Mass d. Velocity

results in a downward curve path

a. Gravity

slows its flight

Air Resistance

is the weight of the bullet

Mass

is the speed of the bullet

Velocity

This refers to the imaginary straight distance from the muzzle of the gun to the target

Range

This refers to the distance within which the firer has control of his shots, meaning he can place his shots at a desired spots

Accurate range

The distance within which a bullet is still capable of inflicting injury after it has been fired.

Effective range

the distance that a projectile can be propelled from a firearm. The farthest distance the bullet could travel.

Maximum range

indoor target range

Gallery range

This refers to the rate of speed of the bullet (during its flight) per unit of time, and it is usually expressed in feet per second (ft/sec) and measured through the use of a chronograph machine

Velocity