The Blast Parameters Spanning the Fireball from Large Hemispherical Detonations of C-4

Journal Article · 04 June 2018 · Propellants, Explosives, Pyrotechnics

DOI: https://doi.org/10.1002/prep.201800071 · OSTI ID:1469550

Rae, Philip John  ^[1]; Mcafee, John Michael ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

In this study, large (~45.4 kg) hemispheres of C-4, detonated on the ground, were instrumented to measure blast parameters at scaled distances between 0.53 to 1.78 m kg^-1/3. The results from free-field and reflected pressure gauge measurements made inside and just outside the maximum extent of the fireball are presented. They show that the predictions from a particular table for scaled TNT charges are broadly consistent with the time-of-arrival, initial peak pressure, positive duration and positive impulse measurements. However, this agreement is poorer through the location of the primary and secondary (delayed) fireball (0.71–1.48 m kg^-1/3), but better closer in and further away. Additionally, for individual detonations with closely located gauges, significant variations between peak pressures and times-of-arrival are measured. Lastly, this suggests a strong effect from the interface instabilities present in the near-field.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1469550
• Report Number(s): LA-UR-18-21835
• Journal Information: Propellants, Explosives, Pyrotechnics, Journal Name: Propellants, Explosives, Pyrotechnics Journal Issue: 7 Vol. 43; ISSN 0721-3115
• Publisher: WileyCopyright Statement
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
Explosion
Blast
Air-Shock