| || Influence of Various Process Parameters on Mechanical Properties and Ballistics of Nitramine-Based Advanced CMDB Propellants
Author : Asthana, S.N. ;Gore, S.R. ;Vaidya, M.V. ;Venkatesan, K. ;Shrotri, P.G.
Source : Defence Science Journal ; Vol:41(4) ; 1991 ; pp 357-362
Subject : 66 Chemical Technology;662.3 Propellants
Keywords : Tensile strength ;Burning rate ;Double base propellants
Abstract : This paper reports the influence of important process parameters, namely mixing time and batch size; on the mechanical properties and ballistics of nitramine-based advanced CMDB propellants. Considerable improvement to the tune of 67 per cent in tensile strength was observed at a mixing time increase of 60-135 min. Scaling up of batch size from 8 to 25 kg resulted in 30 per cent higher tensile strength. Recorded enhancement of burning rate was of the order of 8 per cent in both the sets of experiments. Ballistically modified composition revealed 11-12 per cent increase in burning rate at all the pressure ranges, on combined increase in mixing time (55 to 85 min) and batch size(5-17kg). These findings are in line with those reported for composite and ballistically modified double-base propellants.