Behavior of Low-Velocity Detonation in Stoichiometric Mixture of Ammonium Perchlorate and Polymethyl Methacrylate

Ермолаев, Б. С.; Belyaev, A. A.; Roman’kov, A. V.; Khrapovskii, V. E.; Сулимов, А. А.; Rebeko, A. G.

doi:10.1134/s1990793119030151

Cited by 2 publications

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“…Expectations were quite high on mixtures of ammonium perchlorate with organic fuel (polymethyl methacrylate, hereinafter referred to as PMMA), the combustion of which in pressed charges with low porosity, according to the available data [3][4][5][6], does not transform into normal detonation in a wide range of charge diameters. However, the preliminary studies carried out on a stoichiometric mixture of ammonium perchlorate and PMMA in a pulsed device with mass ejection revealed a noticeable underburning, which was a consequence of diffusion processes that slow down the chemical conversion.…”

Section: Introductionmentioning

confidence: 99%

Mixed Fuel in the Low-Velocity Detonation Mode

Ермолаев

Roman’kov

Сулимов

et al. 2021

Russ. J. Phys. Chem. B

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The results of experiments carried out in a laboratory pulsed energy projectile (PEP) device with a high-density charge made by pressing from a fuel mixture and initiated by a low-velocity detonation wave are presented. The muzzle velocity, maximum pressure in the chamber, and the completeness of fuel conversion are determined according to the following measured characteristics: the thrust impulse, pressure diagram in the chamber, and the acceleration trajectory of the PEP. A mixture of ammonium perchlorate with 15% polymethyl methacrylate is used. Several experiments are carried out on a mixture with the addition of 20% finely ground hexogen (RDX). The charge density, the size of the ammonium perchlorate particles, and the mass of the charge and the PEP body are varied. The studied mixture ensures stable operation of the PEP device and makes it possible to obtain reproducible values of the thrust impulse and PEP speed at the maximum pressure not exceeding 1.2 GPa. The regularities that connect the characteristics being determined with the properties of the charge are established. The conditions are found under which the maximum completeness of the conversion is achieved, which in this study is 75-80%. Ways of further increasing the completeness of the transformation are outlined.

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Section: Introductionmentioning

confidence: 99%