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Influence of Test Section Geometry on the Blast Environment in an Explosively Driven Conical Shock Tube

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Technical Report,01 Jan 2017,31 Jul 2017

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US Army Research Laboratory Aberdeen Proving Ground United States

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This report details experimental data gathered on incident overpressures and the corresponding impulses obtained in the test section of an explosively driven 10deg full angle conical shock tube. Due to the shock tubes steel walls approximating the boundary conditions seen by a spherical sector cut out of a detonating sphere of energetic material, a 5.3-g pentolite shock tube driver charge produces peak overpressures corresponding to a free-field detonation from an 816-g sphere of pentolite. The 4 test section geometries investigated in this report open air, cylindrical, 10 inscribed square frustum, and 10 circumscribed square frustum provide a variety of different time histories for the incident overpressures and impulses, with a circumscribed square frustum yielding the best approximation of the mid-field blast environment produced by a free-field detonation.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Ammunition and Explosives

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