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A Computational Parametric Study on Cookie-Cutter Projectiles



Reported are the results of a computational parametric study on cookie-cutter Explosively Formed Projectiles (EFP) as a low environmental impact Explosive Ordnance Disposal (EOD) method. Considering an anti-tank mine, the cookie-cutter has to generate a low order reaction of the explosive to minimize the collateral damage. Moreover it has to cut the casing body with a sufficient diameter for a boosted evacuation of the reaction products. Pointed out is the potential of a short and thin walled copper tubular projectile to fulfill the required terminal performance while hugely limiting the pressure into the explosive. The impact velocity should range between 1100 m/s and 1500 m/s. The inner diameter of the cookie-cutter should be large enough to limit overpressure by recombination of the shock waves. The performances achieved with cookie-cutter projectiles are compared, at constant mass, with classical EFP shapes, i.e. thimble shaped projectiles and hemispheric end cylinders.

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