Characteristics of porous medium intended for detonation and shock wave flame extinguishing at feeding of energy extracting compositions into the electric discharge zone are presented. Carborundum is proposed to be used as filling substance. Its grain dimensions are in the range from 10{sup}(-3)m to 10{sup}(-4)m and the layer thickness varies from 10{sup}(-2)m to 10{sup}(-1)m. Examples for extinguishing of flame generate by energy extracting compositions based on ammoniac nitrate and carbamide for typical combustion conditions are considered.
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