Untitled - Sciencemadness Dot Org

DETONATION PROPERTIES
Explosive
Table 3.32 CYCLOTOL ON DURAL
RDX/TNT: 76.7 f 0.8 wt% RDX. 1.756 f 0.005 g/cm3. 203-mm-diam pieces from
12.7 to 101.6-mm thick in various combinations to give 12.7- to 812.8-mm thick-
nesses. P-080 booster. D = 3.193 p0 + 2.702 at 78.1 wt% RDX and increases 0.003
km/s per 1 wt% RDX increase.
Plates
Dural, 36.57 f 0.02 mm thick.
Shot
No.
Plate Plate
Density Thickness
(g/cm”) (mm)
Explosive
Thickness
(mm)
Free-Surface
Velocity
(km/s)”
7c 199 2.795 36.59 12.7 1.859 III 0.025
7c 200 2.793 36.53 25.4 2.240 zt 0.019
7c 201 2.786 36.58 38.1 2.540 41 0.018
7c 202 2.786 36.58 50.8 2.676 f 0.010
7C 203 2.790 36.58 76.2 2.875 f 0.018
7C 204 2.786 36.54 101.6 3.006 f 0.023
7C 205 2.786 36.57 152.4 3.149 * 0.018
7C 206 2.793 36.57 203.2 3.194 zt 0.026
7C 207 2.793 36.55 406.4 3.289 f 0.028
7C 243 2.793 36.58 609.6 3.279 It 0.030
7C 218 2.786 36.57 812.8 3.237 + 0.021
--_---__-
aMean and standard deviation of 12 determinations on the first seven entries and on the ninth and
tenth, 11 determinations on the eighth, and 3 determinations on the last.
Analysis
As the charge length-to-diameter ratio is increased, the plate free-surface velocity
increases continuously and significantly up to an asymptote of 3.29 km/s at about
two charge diameters. A small, though possibly significant, decrease is then seen
out to four charge diameters. The velocity at one charge diameter is about 3% less
than that at two charge diameters.
266