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Davydov V.Yu.,Research Institute for Machine Building | Gubin A.S.,Research Institute for Machine Building
Russian Journal of Physical Chemistry B | Year: 2011

The relationship between the chemical composition of the detonation products and the acceleration ability of explosives is considered. Based on theoretical and experimental studies, it is concluded that, at volumetric energy content, the most important parameter is the average atomicity of the molecules constituting the detonation products. Among the CHNOF-containing explosives, groups with high acceleration ability were identified. The experimental results on the acceleration ability obtained using the M-40 method are reported for mixtures of dispersed Al with HEs with different oxygen balance and for mixtures of HMX-based HE with Al, Mg, Y, Ta, ZrH2. An analysis of the acceleration ability on the charge density for BTNEN and mixtures thereof with Al made is possible to estimate the degree of conversion of the energy of combustion of Al under the gasdynamic conditions typical of the M-40 method, which turned out to be 20-40%. © Pleiades Publishing, Ltd., 2011. Source


Davydov V.Yu.,Research Institute for Machine Building | Gubin A.S.,Research Institute for Machine Building
Russian Journal of Physical Chemistry B | Year: 2011

The acceleration ability of high explosives containing additives of activated and ultrafine aluminum was considered. It was demonstrated that different methods of activation of Al oxidation that make it possible to increase the rate of this process in air severalfold produce little or no effect on the acceleration ability of aluminized high explosives. The basic features of the behavior of Al in detonation waves that explain the results are formulated. © Pleiades Publishing, Ltd., 2011. Source


Davydov V.Yu.,Research Institute for Machine Building | Gubin A.S.,Research Institute for Machine Building
Russian Journal of Physical Chemistry B | Year: 2011

The process of acceleration of plates and destroyable steel shells is examined. It is shown that 85% of the energy of the secondary reactions in the detonation products is converted into the work of acceleration of the shell. The conclusion is drawn that the incomplete transformation of the potential energy stored in aluminized explosives is associated not so much with a low rate of Al combustion in the detonation products, but rather with the thermodynamic properties of its oxidation and the gas-dynamic conditions under which the work of explosion is done. An important role of the processes occurring at the detonation products-air interface is emphasized. A physical model capable of adequately describing the experimental results is proposed. © Pleiades Publishing, Ltd., 2011. Source

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