| Popis: |
Initiation thresholds generated by oblique impacts of rods and spheres are examined, and their relationship to normal impacts of cones are explored. Experimental data from rod impacts show two distinct response regions for bare or lightly covered charges, the division between them depending on the point at which a steady-state oblique shock can no longer be sustained. This steady-state region is eliminated by thicker barriers, but the variation of threshold with impact angle is virtually the same as for the non-steady regime in bare HE. Both rod datasets show a dependency on impact angle rather than a function of its cosine. Cones follow the rod relationship, but spheres are unique amongst these projectile geometries in showing a dependency on the cosine of the angle. |
