Midterms Flashcards
Study of the motion of projectiles
Ballistics
To throw
Ballo or ballein
Balista means
Gigantic bow or catapult
Systemized body of knowledge
Science
Refers to bullet/slug/ball/pellet/flechette that passes through the barrel of FA
Projectile
The science if FA identification by means of the ammunition fired through them
Forensic ballistics
As applied to ballistics or to any other subjects suggests a relationship to a court of justice and legal proceedings.
Forensic
Forensis means - ___ that means ____
Forum
Public/ market place
Movement of projectile inside and outside barrel
Motion
Forward movement of projectile with the action of expansive force of gases.
Direct motion
The turning of bullet inside and outside barrel with the action of the rifling
Rotary motion
Movement of projectile after hitting the target
Translational motion
Also called internal ballistic
Interior ballistics
Study of projectile while still inside the barrel
Interior ballistic
From breech to the muzzle of barrel
Interior ballistic
Failure of cartridge to explode
Misfire
Delay of explosion
Hangfire
Created during manufacture such as spiral cutting of the grooves
Irregularities
Caused by tools in the manufacture of the chamber
Scratches
Not polished well
Roughness
Caused by drill blade and is beyond the control of a man
Imperfections
The chamber pressure is 46,000 per square inch (psi)
Caliber .357
Occurs when shell is separated from the bullet, the shell will be pushed back to the breech face leaving such marks
Breechface marks
Refers to the fatal equivalent of a bullet
Energy