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R. Meyer J. Köhler A. Homburg Explosives

R. Meyer J. Köhler A. Homburg Explosives

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Leg Wires<br />

Leg Wires<br />

Zünderdrähte; fils du défonaleur<br />

The two single wires or one duplex wire extending out from an electric<br />

blasting cap.<br />

Linear Burning Rate<br />

Linear Regression Rate; lineare Brenngeschwindigkeit;<br />

velocité de combustion linéaire<br />

Distance normal to any burning surface of pyrotechnic or propellant<br />

burned through in unit time; W Burning Rate.<br />

Liquid <strong>Explosives</strong><br />

202<br />

flüssige Sprengstoffe; explosifs liquides<br />

Numerous explosive materials are liquid. This applies primarily to<br />

several nitric acid esters such as W Nitroglycerin, W Nitroglycol, W Diethyleneglycol<br />

Dinitrate, W Triethyleneglycol Dinitrate, W Butanetriol Trinitrate<br />

and many more. Most of them are so highly sensitive to impact<br />

that they are converted to the less sensitive solid state, e.g., by<br />

gelatinization with nitrocellulose; as is well known, such processes<br />

formed the subject of the pioneering patents of Alfred Nobel. It was<br />

shown by Roth that the impact sensitivity of explosive liquids is considerably<br />

enhanced if they contain air bubbles. Nitrocellulose gelatinization<br />

increases the minimum explosion-producing impact energy in<br />

fallhammer tests performed on nitroglycerine from 0.02 to 0.2 kpm.<br />

W Nitromethane is considerably less sensitive. The volatility of the<br />

compound is high, and the handling of the constituent explosionproducing<br />

liquids is complicated. Nevertheless, nitromethane was<br />

used in the USA for preliminary studies to the big nuclear explosions<br />

(“pregondola” etc.). It has also been used in stimulation explosions<br />

carried out in gas wells and oil wells. PLX (“Picatinny Liquid Explosive”)<br />

consists of 95% nitromethane and 5% ethylenediamine.<br />

It has been proposed that liquid oxidizers (highly concentrated nitric<br />

acid, nitrogen tetroxide, tetranitromethane) be incorporated into the<br />

explosive mixture only on the actuation site or in the weapon itself so<br />

as to produce an approximately equalized oxygen balance and thus<br />

attain a higher degree of transport safety. Well known liquid explosives<br />

include “Panklastites” (nitrogen tetroxide with nitrobenzene, benzene,<br />

toluene, or gasoline) and “Hellhoffites” (concentrated nitric acid with<br />

dinitrobenzene or dinitrochlorobenzene). The mixture, under the name<br />

“Boloron”, was still a recommended procedure in Austria after the<br />

Second World War. Similar explosives are known as W Dithekite. The

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