High-speed measurement of firearm primer blast waves

Details High-speed measurement of firearm primer blast waves High-speed measurement of firearm primer blast waves

2012-03-13

arxiv.org/abs/1203.2701v1

Physics

Popular Physics

4 pages. arXiv admin note: substantial text overlap with arXiv:1102.1644

Scientific paper

This article describes a method and results for direct high-speed measurements of firearm primer blast waves employing a high-speed pressure transducer located at the muzzle to record the blast pressure wave produced by primer ignition. Key findings are: 1) Most of the lead styphnate based primer models tested show 5.2-11.3% standard deviation in the magnitudes of their peak pressure. 2) In contrast, lead-free diazodinitrophenol (DDNP) based primers had standard deviations of the peak blast pressure of 8.2-25.0%. 3) Combined with smaller blast waves, these large variations in peak blast pressure of DDNP-based primers led to delayed ignition and failure to fire in brief field tests.

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