Accession Number:

AD1049399

Title:

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

Descriptive Note:

[Technical Report, Technical Report]

Corporate Author:

US Army Research Laboratory

Personal Author(s):

Report Date:

2018-03-30

Pagination or Media Count:

34

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.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Ammunition and Explosives

Distribution Statement:

[A, Approved For Public Release]