Accession Number:

ADA022351

Title:

Impact Pulse Shaping

Descriptive Note:

Technical rept.

Corporate Author:

HARRY DIAMOND LABS ADELPHI MD

Personal Author(s):

Report Date:

1975-06-01

Pagination or Media Count:

59.0

Abstract:

The Harry Diamond Laboratories 4- and 7-in. air guns are used to slowly accelerate projectiles and components contained therein to speeds up to 900 ftsec. The impacts of these projectiles are designed to produce pulse shapes projectile decelerations that simulate the interior ballistic acceleration environments occurring in a real gun. The continuity, momentum, and energy conservation equations are applied to the impact testing of projectiles, and calculations obtained therefrom are compared with experimental air gun data of projectile time-deceleration. Data refer to projectile speeds of 300 to 650 ftsec, accelerations up to 40,000 g, with energies of 14,000 and 43,000 ft-lb for the 4- and 7-in. guns, respectively impacting on aluminum honeycomb mitigators having a variable crush area, uniform static crush strengths of 725, 2000, 4000, and 8000 psi, and a velocity strain-rate dependent dynamic crush strength.

Subject Categories:

  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE