Measured Airblast Environment From an Explosive Charge Having a Scored Metal Casing

摘要

For most applications, the introduction of a metallic casing tends to reduce the intensity of the airblast from the cased charge. Most predictive methods assume that the inertial resistance of the casing is the dominant parameter in estimating the reductions in peak airblast pressure and impulse. This enables the use of simple formulae to estimate bare charge equivalents for cased charges which consider only the relative masses of explosive and casing material. Recent experiments have shown that casing material properties can significantly influence the resulting airblast field from a cased explosive charge, suggesting that in certain cases, other parameters besides the relative masses of casing material and explosive might be required. To further pursue these findings, a special cased explosive charge was designed and tested on the AFRL blastpad.