Generation of blast waves in a channel by nonideal detonation of aluminum-enriched high-density compositions

Сулимов, А. А.; Борисов, А. А.; Ермолаев, Б. С.; Sukoyan, M. K.; Khrapovskii, V. E.; Komissarov, P. V.

doi:10.1134/s1990793109050133

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“…The data obtained for the Teflon containing com positions can be compared with results of similar stud ies carried out earlier with formulations composed of aluminum, RDX, and ammonium perchlorate [1]. The experiments were conducted on the same cylin drical tube setup using pressed charges; the results of the measurements were also compared to those for TNT.…”

Section: Discussionmentioning

confidence: 98%

“…Earlier experiments [1,2] in channels and in the unconfined air demonstrated that blast waves gener ated by the nonideal detonation of mixtures based on ammonium perchlorate, hydrocarbon fuel, alumi num, and RDX exhibit advantageous performance characteristics. The main feature of the observed chemical conversion is that, in the front of the detona tion wave, only apart of the stored chemical energy is released, mainly due to the decomposition of the explosive sensitizer, RDX, with most of the energy being released by the subsequent reactions, spread in time and space.…”

Section: Introductionmentioning

confidence: 98%

“…Air blast waves were generated in the channel of a "cylindrical tube" setup, described in [1]. The experi mental conditions were such as to minimize the possi ble involvement of air oxygen in the reactions with the combustible components of the mixture.…”

Section: Introductionmentioning

confidence: 99%

“…(1) Relative pressure at the leading front and (2) relative pressure impulse as functions of the distance from the charge mea sured on the cylindrical tube setup for a 31.5% A1 + 38.5% T + 30% RDX composition containing PAP 2 aluminum powder (run no. 1).…”

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Blast waves in a cylindrical channel generated by the nonideal detonation of aluminum-Teflon-RDX high-density formulations

Сулимов

Ермолаев

Sukoyan

2012

Russ. J. Phys. Chem. B

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The pressure at the front and the pressure impulse of blast waves generated in a cylindrical tube by the expanding products of the nonideal detonation of low porosity charges prepared by pressing of fine grained powders of aluminum, Teflon, and RDX were measured. The measured parameters are compared to the same parameters of blast waves produced by the detonation of TNT charges of identical mass. The relative quantities were used to evaluate the effectiveness of blast waves with respect to those generated by TNT. Mixed compositions differing in the shape (brand) of the aluminum powder particles and the ratio between the components at 30% RDX are studied. It is shown that, for the investigated compositions, the pressure at the leading front of the wave exceeds the pressure achieved during TNT explosion on average by 10-30%, almost independently of the distance traveled along the tube in the range from 0.8 to 3.8 m. The dependence of the wave amplitude on the particle shape and aluminum content was weak. In the same range of distances, the relative pulse pressure increases strongly, from 0.5 to 2.1 and higher, mainly due to an increase in the width of the wave. This result is of interest from the point of view of achieving a high pressure impulse of the blast wave in an area remote from the charge. The obtained data suggest that RDX mainly reacts in the det onation wave, with the chemical transformation of Teflon and aluminum in the detonation wave and near to charge zone occurring, if at all, to a small extent. On the contrary, as the blast wave front moves through the channel, the burning of aluminum in the fluoride formed during the decomposition of Teflon provides an appreciable support to the blast wave, causing a significant increase in the pressure impulse.

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Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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