Air Gap Effects in LX-17

Three experiments done over twenty years on gaps in LX‐17 are described. For the detonation front moving parallel to the gaps, jets of gas products were seen coming from the gaps at velocities 2 to 3 times greater than the detonation velocity. A case can be made that the jet velocity increased with...

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Bibliographic Details
Published in:Propellants, explosives, pyrotechnics explosives, pyrotechnics, 2006-08, Vol.31 (4), p.294-298
Main Authors: Souers, P. Clark, Ault, Stan, Avara, Rex, Bahl, Kerry L., Boat, Ron, Cunningham, Bruce, Gidding, Doug, Janzen, Jim, Kuklo, Denise, Lee, Ron, Lauderbach, Lisa, Weingart, Richard C., Wu, Ben, Winer, Kris
Format: Article
Language:English
Subjects:
Crack
Gap
Jet Velocity
Jets
Roughness
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Summary:Three experiments done over twenty years on gaps in LX‐17 are described. For the detonation front moving parallel to the gaps, jets of gas products were seen coming from the gaps at velocities 2 to 3 times greater than the detonation velocity. A case can be made that the jet velocity increased with gap thickness but the data are scattered. For the detonation front moving transverse to the gap, time delays were seen. The delays roughly increase with gap width, going from 0–70 ns at “zero gap” to around 300 ns at 0.5–1 mm gap. Larger gaps of up to 6 mm width almost certainly stopped the detonation, but this was not proved. Real‐time resolution of the parallel jets and determination of the actual re‐detonation or failure in the transverse case needs to be achieved in future experiments.
ISSN:0721-3115
1521-4087
DOI:10.1002/prep.200600040