Influence of Test Section Geometry on the Blast Environment in an Explosively Driven Conical Shock Tube
Abstract
This report details experimental data gathered on incident overpressures and the corresponding impulses obtained in the test section of an explosively driven 10degxE; (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, 10xE; inscribed square frustum, and 10xE; 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 30, 2018
- Accession Number
- AD1049399
Entities
People
- Joel B Stewart
Organizations
- United States Army Research Laboratory