| || Nitramine Based High Energy Propellant Compositions for Tank Guns
Author : Damse, R.S;Singh, Haridwar
Source : Defence Science Journal ; Vol:50(1) ; 2000 ; pp 75-81
Subject : 623.45 Ammunition;623.4 Armaments and Ballistics;662.3 Propellants
Keywords : Gun propellants;RDX;Tank gun ammunition;Flame temperature;Ballistics;Nitrocellulose
Abstract : "Six different RDX-based gun propellant compositions have been formulated and studied to select the most suitable composition for tank gun ammunition in terms of higher force constant at relatively lower flame temperature (T). Ballistic performance of the compositions was evaluated on the basis of closed vessel test. Heat energy was determined using a bomb calorimeter. Sensitivity, thermal characteristics, stability and mechanical properties of the compositions were studied for assessing their suitability for application. The composition containing 65 per cent RDX and 28 per cent nitro-cellulose was found to provide higher level of force constant at relatively lower T/sub f/, reasonably good burning rate characteristics and mechanical properties. "
| || Modelling of Heat Loss in Closed Vessels during Propellant Burning
Author : Kulkarni, U.P.;Smitha D., Naik
Source : Defence Science Journal ; Vol:50(4) ; 2000 ; pp 401-409
Subject : 66 Chemical Technology;662.3 Propellants
Keywords : Burning rate;Closed Vessel Technique;Gun propellants
Abstract : "Closed vessel technique is essentially used to determine the force constant, vivacity and the burning rate of gun propellants. In fact, it is the only method to find out these three parameters experimentally. It is a well-known fact that however small the propellant burning time may be, there will be heat loss to the walls of the vessel due to conduction, convection, radiation and also due to the expansion of the vessel. This fact necessitates applying correction to the observed maximum pressure in the experiment. An analysis is presented in this paper as to how this heat loss can be modelled along with discussion about other models reported in this field. "