Measurement of In-Bore Set-Back Pressure on Projectile Warheads Using Hard-Wire Telemetry

Abstract

High Explosive setback has always been a matter of concern for projectile designers. In order to set inspection criteria and establish realistic laboratory sensitivity tests, it was desired to measure the actual setback pressure experienced by projectiles during launch. Described in detail is a simple inexpensive hard-wire measurement system used to obtain inbore setback pressures in a projectile filled with High Explosive. Examples of actual data obtained are shown and an analysis of the results is briefly discussed.