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This article is cited in 13 scientific papers (total in 13 papers)
Fireball and shock wave dynamics in the detonation of aluminized novel munitions
J. M. Gordon, K. C. Gross, G. P. Perram Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio, USA
Abstract:
High-speed 4-kHz visible imagery from 13 field detonations of aluminized RDX munitions with varying liner compositions are collected to study shock wave and fireball dynamics. The Sedov–Taylor point blast model is fitted to shock front temporal history data, and blast wave characteristics are interpreted by varying the energy release factor s and blast dimensionality $n$. Assuming a constant rate of energy release ($s$ = 1), the Sedov–Taylor model establishes a near-spherical expansion with the dimension $n$ = 2.2–3.1 and shock energies of 0.5–8.9 MJ. These shock energies correspond to efficiencies of 2–15% of the RDX heats of detonation. A drag model for the fireball size yields a maximum radius of $\approx$ 5 m, which is consistent with the luminous fireball size in visible imagery, and initial shock speeds corresponding to Mach numbers of 4.7–8.2. Initial shock speeds are smaller than the RDX theoretical maximum speed by a factor of 3–4. Shock energy decreases if aluminum is in the liner rather than in the high explosive.
Keywords:
shock waves, fireball, classification, detonation, aluminized RDX, Sedov–Taylor point blast model.
Received: 10.04.2012
Citation:
J. M. Gordon, K. C. Gross, G. P. Perram, “Fireball and shock wave dynamics in the detonation of aluminized novel munitions”, Fizika Goreniya i Vzryva, 49:4 (2013), 76–90; Combustion, Explosion and Shock Waves, 49:4 (2013), 450–462
Linking options:
https://www.mathnet.ru/eng/fgv58 https://www.mathnet.ru/eng/fgv/v49/i4/p76
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