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The temperature depends on the energy released and the heat loss to the sides of the barrel and chamber. As the projectile travels down the barrel, the volume the gas occupies behind the projectile increases. Some energy is lost in deforming the projectile and causing it to spin. There are also frictional losses between the projectile and the ...
The formula for calculating the ballistic coefficient for small and large arms projectiles only is as follows: = [2] where: C b,projectile, ballistic coefficient as used in point mass trajectory from the Siacci method (less than 20 degrees). [3] m, mass of bullet
Drag makes the projectile turn into the wind, much like a weather vane, keeping the centre of air pressure on its nose. From the shooter’s perspective, this causes the nose of the projectile to turn into the wind and the tail to turn away from the wind.
Temperature (including air, ammunition and barrel temperature) [8] Spindrift, [9] an effect caused by the rotation of the bullet; Coriolis effect, [10] caused by the Earth's rotation; Mirage, [11] which causes the shooter to hit high and to the side if there is a little wind; Angle to the target (called "cosine angle"), [12] either up or ...
Transitional ballistics, also known as intermediate ballistics, [1] is the study of a projectile's behavior from the time it leaves the muzzle until the pressure behind the projectile is equalized, so it lies between internal ballistics and external ballistics. [2] [3] [4] [5]
This misconception is due to the metal's fluid-like behavior, which is caused by the massive pressures produced during the detonation of the explosive causing the metal to flow plastically. When used in the anti-tank role, a projectile that uses a shaped-charge warhead is known by the acronym HEAT (high-explosive anti-tank).
A projectile is any object projected into space (empty or not) by the exertion of a force. Although any object in motion through space (for example a thrown baseball) is a projectile, the term most commonly refers to a weapon. [8] [9] Mathematical equations of motion are used to analyze projectile trajectory. [citation needed]
As an example, when the barrel temperature rises and the bearing clearances change, the jump of the shot will change. This will affect the consistency. Similarly, the straightness of the barrel will affect the final trajectory and hence the accuracy, but it may also affect the shot pitch velocity at launch, which in turn may affect the consistency.