309 
CHARGE 
o ZL L 
POINT OF Y eT 
DETONATION 
« P GAUGE 
iS 
oc 
w 
<u 
yo) 
= 
i] 
a 
Cc 
=, 
vw 
Ww 
oa 
= 
a 
Oo a a S 
tO tl 12 ‘3 1-4 
Time after detonation - Milliseconds 
(8) Circular arc of charge, radius Stt. Pat the 
centre of the circle 
6000 
4000 
2,000 
Pressure —Lb_/sq.in. 
1-25 1-30 35 
Time after detonation — Milliseconds 
(b) Charge forming arc of an equiangular spiral. P at the 
centre of the spiral Sft. fromthe nearest point of 
the arc 
Fig.4. PRESSURE-TIME CURVES FOR CURVILINEAR CHARGES Sft. LONG ih 
FULL CURVE CALCULATED FOR Po=5,000 LB/SO.IN.. K =60,000 SEC. 
DASHED CURVE OBSERVED FOR CORDOTEX. TIME AFTER DETONATION 
OF THE DASHED CURVE ASSUMED THE SAME AS FOR THE 
FULL CURVE 
Dept. of Scientific « Industrial Research 
Road Research Laboratory Note No. ADM 153 /GC. ARB S/FS.3592 
