1202 
Trolhe 
XK 
{deprees ) 
90% 
387 
87 
45 
uy A 
Re oie oes 
Il, Finite Amplitude Effect as illustrated by the 
ratios (P, + “P2)/P1 | (=D) for double shocks and 
5) a PP single e shocks (¢ is ¢ is the interval 
between suczessive coaks in microseconds). 
Py = Peak preasure at first (incident) shock, 
cvalveted at tine of msasuremont of Pp. 
Po = Pressure increase a% second (refiacted) 
shock. 
P = Peak pressure at single (Mach) shock. 
Pa, = Peak preasure 4 fset from single 1700 g. 
charge. 
In _the plane of 2&8" to the sides of 4" to the side of 
“intersection "fhe intersection “the Intersection 
fage wie R & z 
1.31 (S) 1.33 (S) = 1.29 (S) Se 
1.44 (S) 1.45 (3S) 0 1.43 (S) Q 
1.57 (S) Xoo] (S) 0 1.45 (S) 9 
1.90 (5S) 1.90 (S) Q 1.92 (5) Oo 
1.90 (S) 1.70 (S) 0 1297 (5) 0 
2.66 (3) 2.10 (S) 9 1,94 (D) 12 
2.99 (S) 2.13 (D) 22 2.05 (D) 44 
@ave (5) 2.24 (D) 33 2.50 (D) 58 
2.56 (S) 2.06 {[D) 27 2.21 (D) 45 
2.54 (S) 2.24 (D) 26 2,04 (D) 62 
2.13 (S) 2.14 (D) 26 2002 eGD) oo. CO 
2.08 (S) 2015 (D) 52 2.08 (D) 95 
# Single 3400 .. charge. be inn Ran 
aoaoaoaoaaeahnDaaQeeEeaEaP»aaEeEeEeEeaEeaeaEaeaEaEaEeEEE=—eeeee eee ee ee 
Table IIIf. Geloulated, fact Measured Timee of Pressure 
Distance between 
ee eee 
Pil EE Caloulated Approximate 
time time ‘bubble radius # 
(t}, miorosec) (tg, microsec) (in. 
One 183 5,8 
74.0 183 
287 408 6,2 
402 542 (say 
622 657 if fasts) 
473 667 
565 783 951 
* Shock front tanner v assumed 0,0607 in, /seo, 
7 B(to-t,)v + 23 
(23 in, * sharge radius. ) 
