The initial velocities of fragments from bombs, shell, and grenades
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Description
Scientific paper. Ballistic Research Lab. Report No. 405. Aberdeen Proving Ground, Ballistic Research Lab., Maryland. 1943. – 12 p.The initial velocities of fragments from bombs, shell and grenades were studied in order to compare efficiencies of the various projectiles. Initial velocities may be predicted from a knowledge of the dimensions of the metal casing and the character and quantity of explosive. A theory was put forward that the contribution to the total kinetic energy made by the detonation of unit mass of explosive is independent of the size of the projectiles. In a large bomb the explosion gases have actually more kinetic energy than the fragments. A simple expressinn is found for the average initial velocity in terms of the charge-weight ratio, C/M; this expression is found to agree with the experimental data fairly well over the whole range from C/M = 0.06 to C/M = 5.8.
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