Scaled Demonstration of a Momentum Cancelling Active Blast Mitigation Concept

An active mitigation countermeasure, based on the principle of momentum cancellation of detonating counter-charges against the effect of explosive blast, has been researched. The study was conducted on a small scale and then extrapolated to an intermediate scale. On a small scale it was demonstrated, both theoretically and experimentally, that high orders of momentum cancellation are achievable. Good correlation was obtained between the numerical predictions and the experimental results. Similarly, on the intermediate scale, with a specific choice of experimental setup, good correlation was achieved between the numerical and experimental results. The differences between the results of the small scale and intermediate scale investigations are attributed to variations in the verification methodologies.