Measurement of Ballistic Impact Flash
Abstract
The downrange flash resulting from the perforation of thin aluminum plates by high velocity steel spheres was investigated to determine how the flash scales with changes in projectile velocity. It was found that two distinct flash intensity maximums occur; one approximately 10 microseconds after penetration, the second some 30 to 80 microseconds later. For a given size sphere, both the spectral irradiance of these two flashes and the energy of the flash scale as approximately the fourth power of the velocity. Coating the impact side of the target with epoxy based aircraft paint or a 0.002 inch layer of aircraft fuel cell sealant reduced the flash by factors or 5 to 300, depending on the wavelength examined.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1974
- Accession Number
- ADA004320
Entities
People
- John W. Mansur
Organizations
- Air Force Institute of Technology