To the problem of hearth combustion on the surface of double-base propellant

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Abstract

The paper presents an approximate model for determining the shape of the formed hot spot on the surface of burning gunpowder at different pressures of gas medium. It was found that with increasing pressure, the geometric dimensions of the hot spot decrease. The burning hearth appears in extinguishment or in nonstationary mode. Apparently, if the dimensions of the hot spot along the surface of the powder and along its height are connected by an “elliptical” connection then its geometric shape is the closest to the experimental shape.

About the authors

Sergey V. Finyakov

N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences

Author for correspondence.
Email: Finykhov@mail.ru

Doctor of Science in physics and mathematics, chief research scientist

Russian Federation, Moscow

References

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  2. Marshakov, V. N., and S. V. Finyakov. 2017. Local non-unidimensional combustion front velocities for nitroglycerin-based propellants. Russ. J. Phys. Chem. B 11(3):450–459. doi: 10.1134/S1990793117030204.
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