Internal ballistics of composite charges taking into account any possible difference in the ratios of specific heats of the component charges

Scientific papers. Defense Science Journal, Vo. 7, No 4, pp 144-158.In the present paper we have discussed the internal ballistics of composite charges when gamma1=gamma2 (i)when the rate of burning is proportion to pressure, the equations for the first stage have been simplified, (ii) when the two component charges are tubular, it has been shown that in the first stage, the composite charge burns as a single charge and this enable us to write the fundamental differential equations the Linear law, (iii)the continuity of the pressure-time curve at the end of the first stage and at all-burnt has been discussed, (iv)the conditions for maximum pressure to occur in any stage given in I have been improved to take into account the possible discontinuity in dp/dt, and an alternative method of discussing the problem has been indicated.