Abstract
High-velocity fluid jets can be explosively generated by firing a piston into a liquid-filled gun barrel fitted with a convergent nozzle. A simple equation is derived in Lagrange's approximation for the motion of the piston and fluid for a one-dimensional model which includes the effects on the flow due to the firing chamber and nozzle. Calculations using parameters typical of a 105-mm howitzer indicate the feasibility of producing a high-velocity jet flow with a relatively low terminal piston velocity, thereby allowing it to be stopped without damage to the nozzle.
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