Primer Output and Initial Projectile Motion for 5.56- and 7.62-mm Ammunition
Abstract
A novel technique for quantifying the initial motion of projectiles in unmodified small-caliber ammunition (5.56 and 7.62 mm) is demonstrated. Evidence that the primer launches the bullet into the engraving process prior to propellant burning is presented. The impulse resulting from the primers (Nos. 41 and 34, respectively) output is measured and compared with the bullet momentum. Values for velocity and acceleration at early time are reported. Other consequences of the accurate measurements of the motion and associated pressure include comparing work done on the bullet to the kinetic energy as a function of position or time. The work presented here is a more-thorough account, along with minor corrections, of results presented at the 28th International Symposium on Ballistics.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2015
- Accession Number
- ADA622138
Entities
People
- John J. Ritter
- Richard A. Beyer
Organizations
- United States Army Research Laboratory