Post-Performation Characteristics of Yawed Long Rods
SOUTHWEST RESEARCH INST SAN ANTONIO TX
Pagination or Media Count:
Perforation of finite-thickness, rolled homogeneous armor RHA plate by a ductile, tungsten-alloy, long-rod penetrator will reduce the length and velocity of the residual rod. Test results presented in the paper show the angle of inclination yaw of the rod also contributes to the reduction of residual- rod length and velocity. Two sizes of 90-percent-tungsten-alloy rods were fired at normal incidence 0 deg obliquity against RHA plates with nominal impact velocities of 2.2 kms. Multiple-exposure, orthogonal-pair flash radiographs were used to obtain pre-impact pitch and yaw of the rods and residual-rod length, velocity, and trajectory data. In addition to erosion, two post-impact mechanisms were observed to reduce the length and velocity of the yawed rod--1 extremely localized bending and fracture of the front of the rod and 2 a second collision of the rod with the penetration channel sidewall.
- Properties of Metals and Alloys