THE USE OF SOLID FOAMS AS A DISTRIBUTED LOW DENSITY EXPLOSIVE IN WATER

Authors
  1. Anderson, J.
  2. Von Rosen, K.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN);Mining Resource Engineering Ltd, Kingston ONT (CAN)
Abstract
Matrices of 60/40 (weight percent) PETN/polyurethane foam spheres have been detonated in glass aquariums to examine the performance of solid foams as a distributed low density explosive in water. The detonation velocities and measured shock pressures do not vary significantly with increasing matrix size, for 5.1cm diameter foam spheres. The detonation velocities decrease linearly with increasing charge gap/sphere diameter (1/d) (decreasing PETN densities and increasing water content) for 2.5cm, 5.1cm and 7.6cm spheres. The results also indicate that the critical charge gap/sphere diameter ratio (1/d)c approaches a constant value with increasing foam sphere diameter. Three matrix charges and three cylinder charges were constructed and delivered to Ballistech Systems Incorporated. These charges will be tested in a large underwater environment (quarry), such that both the resulting shock pressures and bubble impulses can be recorded.
Report Number
DRES-CR-53/90 — Contract Report (Final)
Date of publication
15 May 1990
Number of Pages
114
DSTKIM No
90-04386
CANDIS No
66626
Format(s):
Hardcopy;Originator's fiche received by DSIS

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