Abstract
In the known experimental system “active charge–target–HE charge to be tested”, critical pressures of shock waves initiating detonation of double‐base propellant charges are determined. TNT charges of various density were used as active HE, and copper plates 5 mm thick were used as targets. The pressure of the shock wave acting on the propellant versus the TNT density was constructed; this dependence being known the critical pressure can be readily determined with only the density of the active charge available. It was found that double‐base propellants are close to liquid HE in terms of sensitivity to shock waves; the critical pressure is 6.0–9.0 GPa for a charge diameter of 40 mm and decreases with increasing diameter. By an example of the NDT‐2 propellant, it is shown that the use of factory‐packed propellants in line charges may lead to failure in transfer of detonation from one propellant charge to another.
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