CHAPMAN-JOUGUET PRESSURES OF SEVERAL PURE AND MIXED EXPLOSIVES
- 25 June 1964
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
The Chapman-Jouguet pressures and reaction product isentropic exponents of fifteen pure and mixed explosives were measured. Smear camera shadowgraphs were made of cylindrical shock waves these explosives transmit into water. From these measurements and the water shock Hugoniot, the co-ordinates of the intersection point were determined in the pressure-velocity plane between the water shock wave and the rarefaction wave reflected back into the detonation products. The isentrope passing through the Chapman-Jouguet pressure-volume point was obtained assuming the products obey a polytropic equation of state (PVk = constant). Chapman-Jouguet pressures of 187.2 kilobars, 264.1 kilobars, and 245.5 kilobars respectively were measured for cast charges of TNT, composition B and pentolite. Pressed charges of RDX at 1.63 g/cc, PETN at 1.568 g/cc, and Tetryl at 1.614 g/cc gave detonation pressures of 283.7 kilobars, 239. 9 kilobars, and 226.4 kilobars respectively.Keywords
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